diff --git a/internal/codegen/golang/imports.go b/internal/codegen/golang/imports.go
index 8ff51eb2c6..e60380abda 100644
--- a/internal/codegen/golang/imports.go
+++ b/internal/codegen/golang/imports.go
@@ -136,7 +136,7 @@ func (i *importer) interfaceImports() fileImports {
 	}
 
 	std := map[string]struct{}{
-		"context": struct{}{},
+		"context": {},
 	}
 	if uses("sql.Null") {
 		std["database/sql"] = struct{}{}
@@ -183,12 +183,12 @@ func (i *importer) interfaceImports() fileImports {
 	}
 
 	pkgs := make([]ImportSpec, 0, len(pkg))
-	for spec, _ := range pkg {
+	for spec := range pkg {
 		pkgs = append(pkgs, spec)
 	}
 
 	stds := make([]ImportSpec, 0, len(std))
-	for path, _ := range std {
+	for path := range std {
 		stds = append(stds, ImportSpec{Path: path})
 	}
 
@@ -243,12 +243,12 @@ func (i *importer) modelImports() fileImports {
 	}
 
 	pkgs := make([]ImportSpec, 0, len(pkg))
-	for spec, _ := range pkg {
+	for spec := range pkg {
 		pkgs = append(pkgs, spec)
 	}
 
 	stds := make([]ImportSpec, 0, len(std))
-	for path, _ := range std {
+	for path := range std {
 		stds = append(stds, ImportSpec{Path: path})
 	}
 
@@ -330,7 +330,7 @@ func (i *importer) queryImports(filename string) fileImports {
 	}
 
 	std := map[string]struct{}{
-		"context": struct{}{},
+		"context": {},
 	}
 	if uses("sql.Null") {
 		std["database/sql"] = struct{}{}
@@ -380,12 +380,12 @@ func (i *importer) queryImports(filename string) fileImports {
 	}
 
 	pkgs := make([]ImportSpec, 0, len(pkg))
-	for spec, _ := range pkg {
+	for spec := range pkg {
 		pkgs = append(pkgs, spec)
 	}
 
 	stds := make([]ImportSpec, 0, len(std))
-	for path, _ := range std {
+	for path := range std {
 		stds = append(stds, ImportSpec{Path: path})
 	}
 
diff --git a/internal/codegen/kotlin/imports.go b/internal/codegen/kotlin/imports.go
index 6942d84a99..31f2e5b86e 100644
--- a/internal/codegen/kotlin/imports.go
+++ b/internal/codegen/kotlin/imports.go
@@ -57,7 +57,7 @@ func (i *importer) interfaceImports() [][]string {
 
 	std := stdImports(uses)
 	stds := make([]string, 0, len(std))
-	for s, _ := range std {
+	for s := range std {
 		stds = append(stds, s)
 	}
 
@@ -85,7 +85,7 @@ func (i *importer) modelImports() [][]string {
 	}
 
 	stds := make([]string, 0, len(std))
-	for s, _ := range std {
+	for s := range std {
 		stds = append(stds, s)
 	}
 
@@ -163,7 +163,7 @@ func (i *importer) queryImports(filename string) [][]string {
 	}
 
 	stds := make([]string, 0, len(std))
-	for s, _ := range std {
+	for s := range std {
 		stds = append(stds, s)
 	}
 
diff --git a/internal/sql/ast/a_array_expr.go b/internal/sql/ast/a_array_expr.go
index 90a49cf2df..dafa0e8e85 100644
--- a/internal/sql/ast/a_array_expr.go
+++ b/internal/sql/ast/a_array_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type A_ArrayExpr struct {
 	Elements *List
 	Location int
diff --git a/internal/sql/ast/a_const.go b/internal/sql/ast/a_const.go
index 2dc4aaf1b6..720dca4a11 100644
--- a/internal/sql/ast/a_const.go
+++ b/internal/sql/ast/a_const.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type A_Const struct {
 	Val      Node
 	Location int
diff --git a/internal/sql/ast/a_expr.go b/internal/sql/ast/a_expr.go
index b548613fb3..415dd1e23f 100644
--- a/internal/sql/ast/a_expr.go
+++ b/internal/sql/ast/a_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type A_Expr struct {
 	Kind     A_Expr_Kind
 	Name     *List
diff --git a/internal/sql/ast/a_indices.go b/internal/sql/ast/a_indices.go
index fd0fce53de..8972f3a556 100644
--- a/internal/sql/ast/a_indices.go
+++ b/internal/sql/ast/a_indices.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type A_Indices struct {
 	IsSlice bool
 	Lidx    Node
diff --git a/internal/sql/ast/a_indirection.go b/internal/sql/ast/a_indirection.go
index 2a5da0b58b..b03b4621a9 100644
--- a/internal/sql/ast/a_indirection.go
+++ b/internal/sql/ast/a_indirection.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type A_Indirection struct {
 	Arg         Node
 	Indirection *List
diff --git a/internal/sql/ast/access_priv.go b/internal/sql/ast/access_priv.go
index acbe0aedb7..8701adacdb 100644
--- a/internal/sql/ast/access_priv.go
+++ b/internal/sql/ast/access_priv.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AccessPriv struct {
 	PrivName *string
 	Cols     *List
diff --git a/internal/sql/ast/aggref.go b/internal/sql/ast/aggref.go
index da68b6d9ac..c4fa9af7e5 100644
--- a/internal/sql/ast/aggref.go
+++ b/internal/sql/ast/aggref.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Aggref struct {
 	Xpr           Node
 	Aggfnoid      Oid
diff --git a/internal/sql/ast/alias.go b/internal/sql/ast/alias.go
index 1640f766b7..7c6302a5ef 100644
--- a/internal/sql/ast/alias.go
+++ b/internal/sql/ast/alias.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Alias struct {
 	Aliasname *string
 	Colnames  *List
diff --git a/internal/sql/ast/alter_collation_stmt.go b/internal/sql/ast/alter_collation_stmt.go
index bb853f9ab7..fa78ed7bf1 100644
--- a/internal/sql/ast/alter_collation_stmt.go
+++ b/internal/sql/ast/alter_collation_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterCollationStmt struct {
 	Collname *List
 }
diff --git a/internal/sql/ast/alter_database_stmt.go b/internal/sql/ast/alter_database_stmt.go
index 2a121e0843..84d91f089c 100644
--- a/internal/sql/ast/alter_database_stmt.go
+++ b/internal/sql/ast/alter_database_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterDatabaseStmt struct {
 	Dbname  *string
 	Options *List
diff --git a/internal/sql/ast/alter_default_privileges_stmt.go b/internal/sql/ast/alter_default_privileges_stmt.go
index 7fb09061c0..64632a726d 100644
--- a/internal/sql/ast/alter_default_privileges_stmt.go
+++ b/internal/sql/ast/alter_default_privileges_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterDefaultPrivilegesStmt struct {
 	Options *List
 	Action  *GrantStmt
diff --git a/internal/sql/ast/alter_domain_stmt.go b/internal/sql/ast/alter_domain_stmt.go
index 474871c2b1..f9f419937f 100644
--- a/internal/sql/ast/alter_domain_stmt.go
+++ b/internal/sql/ast/alter_domain_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterDomainStmt struct {
 	Subtype   byte
 	TypeName  *List
diff --git a/internal/sql/ast/alter_enum_stmt.go b/internal/sql/ast/alter_enum_stmt.go
index 45f62116f0..1346b3c0d0 100644
--- a/internal/sql/ast/alter_enum_stmt.go
+++ b/internal/sql/ast/alter_enum_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterEnumStmt struct {
 	TypeName           *List
 	OldVal             *string
diff --git a/internal/sql/ast/alter_extension_contents_stmt.go b/internal/sql/ast/alter_extension_contents_stmt.go
index 16ab565534..27ad1c31d6 100644
--- a/internal/sql/ast/alter_extension_contents_stmt.go
+++ b/internal/sql/ast/alter_extension_contents_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterExtensionContentsStmt struct {
 	Extname *string
 	Action  int
diff --git a/internal/sql/ast/alter_extension_stmt.go b/internal/sql/ast/alter_extension_stmt.go
index 6ca48b9fbf..049e712c94 100644
--- a/internal/sql/ast/alter_extension_stmt.go
+++ b/internal/sql/ast/alter_extension_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterExtensionStmt struct {
 	Extname *string
 	Options *List
diff --git a/internal/sql/ast/alter_fdw_stmt.go b/internal/sql/ast/alter_fdw_stmt.go
index 3d46f5da4e..12c6457d71 100644
--- a/internal/sql/ast/alter_fdw_stmt.go
+++ b/internal/sql/ast/alter_fdw_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterFdwStmt struct {
 	Fdwname     *string
 	FuncOptions *List
diff --git a/internal/sql/ast/alter_foreign_server_stmt.go b/internal/sql/ast/alter_foreign_server_stmt.go
index 1d12347339..9f3e8dbe64 100644
--- a/internal/sql/ast/alter_foreign_server_stmt.go
+++ b/internal/sql/ast/alter_foreign_server_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterForeignServerStmt struct {
 	Servername *string
 	Version    *string
diff --git a/internal/sql/ast/alter_function_stmt.go b/internal/sql/ast/alter_function_stmt.go
index 14b988173a..1193ab7656 100644
--- a/internal/sql/ast/alter_function_stmt.go
+++ b/internal/sql/ast/alter_function_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterFunctionStmt struct {
 	Func    *ObjectWithArgs
 	Actions *List
diff --git a/internal/sql/ast/alter_object_depends_stmt.go b/internal/sql/ast/alter_object_depends_stmt.go
index c7f2896c70..83cc3c9641 100644
--- a/internal/sql/ast/alter_object_depends_stmt.go
+++ b/internal/sql/ast/alter_object_depends_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterObjectDependsStmt struct {
 	ObjectType ObjectType
 	Relation   *RangeVar
diff --git a/internal/sql/ast/alter_object_schema_stmt.go b/internal/sql/ast/alter_object_schema_stmt.go
index 540636789b..664e6f1495 100644
--- a/internal/sql/ast/alter_object_schema_stmt.go
+++ b/internal/sql/ast/alter_object_schema_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterObjectSchemaStmt struct {
 	ObjectType ObjectType
 	Relation   *RangeVar
diff --git a/internal/sql/ast/alter_op_family_stmt.go b/internal/sql/ast/alter_op_family_stmt.go
index bd287e2822..60655d76b0 100644
--- a/internal/sql/ast/alter_op_family_stmt.go
+++ b/internal/sql/ast/alter_op_family_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterOpFamilyStmt struct {
 	Opfamilyname *List
 	Amname       *string
diff --git a/internal/sql/ast/alter_operator_stmt.go b/internal/sql/ast/alter_operator_stmt.go
index 6d66905a7a..11ef659a8c 100644
--- a/internal/sql/ast/alter_operator_stmt.go
+++ b/internal/sql/ast/alter_operator_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterOperatorStmt struct {
 	Opername *ObjectWithArgs
 	Options  *List
diff --git a/internal/sql/ast/alter_owner_stmt.go b/internal/sql/ast/alter_owner_stmt.go
index 7e00554a58..8a4be65183 100644
--- a/internal/sql/ast/alter_owner_stmt.go
+++ b/internal/sql/ast/alter_owner_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterOwnerStmt struct {
 	ObjectType ObjectType
 	Relation   *RangeVar
diff --git a/internal/sql/ast/alter_policy_stmt.go b/internal/sql/ast/alter_policy_stmt.go
index 4d037fb5d7..03e814328c 100644
--- a/internal/sql/ast/alter_policy_stmt.go
+++ b/internal/sql/ast/alter_policy_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterPolicyStmt struct {
 	PolicyName *string
 	Table      *RangeVar
diff --git a/internal/sql/ast/alter_publication_stmt.go b/internal/sql/ast/alter_publication_stmt.go
index d25a16cfa6..c1288858eb 100644
--- a/internal/sql/ast/alter_publication_stmt.go
+++ b/internal/sql/ast/alter_publication_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterPublicationStmt struct {
 	Pubname      *string
 	Options      *List
diff --git a/internal/sql/ast/alter_role_stmt.go b/internal/sql/ast/alter_role_stmt.go
index 8ae793df6e..e616f05917 100644
--- a/internal/sql/ast/alter_role_stmt.go
+++ b/internal/sql/ast/alter_role_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterRoleStmt struct {
 	Role    *RoleSpec
 	Options *List
diff --git a/internal/sql/ast/alter_seq_stmt.go b/internal/sql/ast/alter_seq_stmt.go
index aa5d156c72..ca4c86a413 100644
--- a/internal/sql/ast/alter_seq_stmt.go
+++ b/internal/sql/ast/alter_seq_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterSeqStmt struct {
 	Sequence    *RangeVar
 	Options     *List
diff --git a/internal/sql/ast/alter_subscription_stmt.go b/internal/sql/ast/alter_subscription_stmt.go
index b9051036f7..443fc7bfb8 100644
--- a/internal/sql/ast/alter_subscription_stmt.go
+++ b/internal/sql/ast/alter_subscription_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterSubscriptionStmt struct {
 	Kind        AlterSubscriptionType
 	Subname     *string
diff --git a/internal/sql/ast/alter_table_move_all_stmt.go b/internal/sql/ast/alter_table_move_all_stmt.go
index 86f94e9baa..39f1256083 100644
--- a/internal/sql/ast/alter_table_move_all_stmt.go
+++ b/internal/sql/ast/alter_table_move_all_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterTableMoveAllStmt struct {
 	OrigTablespacename *string
 	Objtype            ObjectType
diff --git a/internal/sql/ast/alter_table_space_options_stmt.go b/internal/sql/ast/alter_table_space_options_stmt.go
index 6d633f46c6..fc49cfe6b8 100644
--- a/internal/sql/ast/alter_table_space_options_stmt.go
+++ b/internal/sql/ast/alter_table_space_options_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterTableSpaceOptionsStmt struct {
 	Tablespacename *string
 	Options        *List
diff --git a/internal/sql/ast/alter_ts_configuration_stmt.go b/internal/sql/ast/alter_ts_configuration_stmt.go
index 9079a225c8..6b58ada4e6 100644
--- a/internal/sql/ast/alter_ts_configuration_stmt.go
+++ b/internal/sql/ast/alter_ts_configuration_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterTSConfigurationStmt struct {
 	Kind      AlterTSConfigType
 	Cfgname   *List
diff --git a/internal/sql/ast/alter_ts_dictionary_stmt.go b/internal/sql/ast/alter_ts_dictionary_stmt.go
index efd9ccf492..0506c49b34 100644
--- a/internal/sql/ast/alter_ts_dictionary_stmt.go
+++ b/internal/sql/ast/alter_ts_dictionary_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterTSDictionaryStmt struct {
 	Dictname *List
 	Options  *List
diff --git a/internal/sql/ast/alter_user_mapping_stmt.go b/internal/sql/ast/alter_user_mapping_stmt.go
index b9ffa2b60c..aeeb0912ae 100644
--- a/internal/sql/ast/alter_user_mapping_stmt.go
+++ b/internal/sql/ast/alter_user_mapping_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlterUserMappingStmt struct {
 	User       *RoleSpec
 	Servername *string
diff --git a/internal/sql/ast/alternative_sub_plan.go b/internal/sql/ast/alternative_sub_plan.go
index eea3258344..86031afd19 100644
--- a/internal/sql/ast/alternative_sub_plan.go
+++ b/internal/sql/ast/alternative_sub_plan.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type AlternativeSubPlan struct {
 	Xpr      Node
 	Subplans *List
diff --git a/internal/sql/ast/array_coerce_expr.go b/internal/sql/ast/array_coerce_expr.go
index ab66a0b0d4..314c6881bf 100644
--- a/internal/sql/ast/array_coerce_expr.go
+++ b/internal/sql/ast/array_coerce_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ArrayCoerceExpr struct {
 	Xpr          Node
 	Arg          Node
diff --git a/internal/sql/ast/array_expr.go b/internal/sql/ast/array_expr.go
index f7dc93db7f..c61aed8df7 100644
--- a/internal/sql/ast/array_expr.go
+++ b/internal/sql/ast/array_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ArrayExpr struct {
 	Xpr           Node
 	ArrayTypeid   Oid
diff --git a/internal/sql/ast/array_ref.go b/internal/sql/ast/array_ref.go
index 631d36082b..d94d800bb9 100644
--- a/internal/sql/ast/array_ref.go
+++ b/internal/sql/ast/array_ref.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ArrayRef struct {
 	Xpr             Node
 	Refarraytype    Oid
diff --git a/internal/sql/ast/bool_expr.go b/internal/sql/ast/bool_expr.go
index d6d342fe99..41ddba949b 100644
--- a/internal/sql/ast/bool_expr.go
+++ b/internal/sql/ast/bool_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type BoolExpr struct {
 	Xpr      Node
 	Boolop   BoolExprType
diff --git a/internal/sql/ast/boolean_test_expr.go b/internal/sql/ast/boolean_test_expr.go
index 2e30401db8..7efbb46462 100644
--- a/internal/sql/ast/boolean_test_expr.go
+++ b/internal/sql/ast/boolean_test_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type BooleanTest struct {
 	Xpr          Node
 	Arg          Node
diff --git a/internal/sql/ast/case_expr.go b/internal/sql/ast/case_expr.go
index ff0fb23c33..c23ffae2a4 100644
--- a/internal/sql/ast/case_expr.go
+++ b/internal/sql/ast/case_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CaseExpr struct {
 	Xpr        Node
 	Casetype   Oid
diff --git a/internal/sql/ast/case_test_expr.go b/internal/sql/ast/case_test_expr.go
index cbceccd741..8899985ca8 100644
--- a/internal/sql/ast/case_test_expr.go
+++ b/internal/sql/ast/case_test_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CaseTestExpr struct {
 	Xpr       Node
 	TypeId    Oid
diff --git a/internal/sql/ast/case_when.go b/internal/sql/ast/case_when.go
index e8a2ef5b90..9b8a488955 100644
--- a/internal/sql/ast/case_when.go
+++ b/internal/sql/ast/case_when.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CaseWhen struct {
 	Xpr      Node
 	Expr     Node
diff --git a/internal/sql/ast/coalesce_expr.go b/internal/sql/ast/coalesce_expr.go
index fddf3618d2..513b495445 100644
--- a/internal/sql/ast/coalesce_expr.go
+++ b/internal/sql/ast/coalesce_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CoalesceExpr struct {
 	Xpr            Node
 	Coalescetype   Oid
diff --git a/internal/sql/ast/coerce_to_domain.go b/internal/sql/ast/coerce_to_domain.go
index 02698280f0..e81a83f15d 100644
--- a/internal/sql/ast/coerce_to_domain.go
+++ b/internal/sql/ast/coerce_to_domain.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CoerceToDomain struct {
 	Xpr            Node
 	Arg            Node
diff --git a/internal/sql/ast/coerce_to_domain_value.go b/internal/sql/ast/coerce_to_domain_value.go
index 37ad0f7083..b2e26cb00c 100644
--- a/internal/sql/ast/coerce_to_domain_value.go
+++ b/internal/sql/ast/coerce_to_domain_value.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CoerceToDomainValue struct {
 	Xpr       Node
 	TypeId    Oid
diff --git a/internal/sql/ast/coerce_via_io.go b/internal/sql/ast/coerce_via_io.go
index 443bcf51d9..48aea6ce72 100644
--- a/internal/sql/ast/coerce_via_io.go
+++ b/internal/sql/ast/coerce_via_io.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CoerceViaIO struct {
 	Xpr          Node
 	Arg          Node
diff --git a/internal/sql/ast/collate_clause.go b/internal/sql/ast/collate_clause.go
index ced00d8670..0c1629a05d 100644
--- a/internal/sql/ast/collate_clause.go
+++ b/internal/sql/ast/collate_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CollateClause struct {
 	Arg      Node
 	Collname *List
diff --git a/internal/sql/ast/collate_expr.go b/internal/sql/ast/collate_expr.go
index d4ac1cad91..6c32eece77 100644
--- a/internal/sql/ast/collate_expr.go
+++ b/internal/sql/ast/collate_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CollateExpr struct {
 	Xpr      Node
 	Arg      Node
diff --git a/internal/sql/ast/comment_stmt.go b/internal/sql/ast/comment_stmt.go
index 7a54bef7b5..304827a294 100644
--- a/internal/sql/ast/comment_stmt.go
+++ b/internal/sql/ast/comment_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CommentStmt struct {
 	Objtype ObjectType
 	Object  Node
diff --git a/internal/sql/ast/common_table_expr.go b/internal/sql/ast/common_table_expr.go
index 4fe68b77dd..d5ae01f040 100644
--- a/internal/sql/ast/common_table_expr.go
+++ b/internal/sql/ast/common_table_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CommonTableExpr struct {
 	Ctename          *string
 	Aliascolnames    *List
diff --git a/internal/sql/ast/const.go b/internal/sql/ast/const.go
index 93b2d97551..d33f0e84ed 100644
--- a/internal/sql/ast/const.go
+++ b/internal/sql/ast/const.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Const struct {
 	Xpr         Node
 	Consttype   Oid
diff --git a/internal/sql/ast/constraint.go b/internal/sql/ast/constraint.go
index 87a022e94a..5b628506af 100644
--- a/internal/sql/ast/constraint.go
+++ b/internal/sql/ast/constraint.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Constraint struct {
 	Contype        ConstrType
 	Conname        *string
diff --git a/internal/sql/ast/constraints_set_stmt.go b/internal/sql/ast/constraints_set_stmt.go
index 8a78023085..ca0a33323d 100644
--- a/internal/sql/ast/constraints_set_stmt.go
+++ b/internal/sql/ast/constraints_set_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ConstraintsSetStmt struct {
 	Constraints *List
 	Deferred    bool
diff --git a/internal/sql/ast/convert_rowtype_expr.go b/internal/sql/ast/convert_rowtype_expr.go
index 1a685602c8..9e72c0c5c5 100644
--- a/internal/sql/ast/convert_rowtype_expr.go
+++ b/internal/sql/ast/convert_rowtype_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ConvertRowtypeExpr struct {
 	Xpr           Node
 	Arg           Node
diff --git a/internal/sql/ast/copy_stmt.go b/internal/sql/ast/copy_stmt.go
index ed368a3fbe..65d4dc69cc 100644
--- a/internal/sql/ast/copy_stmt.go
+++ b/internal/sql/ast/copy_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CopyStmt struct {
 	Relation  *RangeVar
 	Query     Node
diff --git a/internal/sql/ast/create_am_stmt.go b/internal/sql/ast/create_am_stmt.go
index 4163618ae2..16fe6455c5 100644
--- a/internal/sql/ast/create_am_stmt.go
+++ b/internal/sql/ast/create_am_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateAmStmt struct {
 	Amname      *string
 	HandlerName *List
diff --git a/internal/sql/ast/create_conversion_stmt.go b/internal/sql/ast/create_conversion_stmt.go
index 725dc1aa4c..c0f4de14b1 100644
--- a/internal/sql/ast/create_conversion_stmt.go
+++ b/internal/sql/ast/create_conversion_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateConversionStmt struct {
 	ConversionName  *List
 	ForEncodingName *string
diff --git a/internal/sql/ast/create_domain_stmt.go b/internal/sql/ast/create_domain_stmt.go
index 6d43ee9847..3c541c4b2e 100644
--- a/internal/sql/ast/create_domain_stmt.go
+++ b/internal/sql/ast/create_domain_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateDomainStmt struct {
 	Domainname  *List
 	TypeName    *TypeName
diff --git a/internal/sql/ast/create_event_trig_stmt.go b/internal/sql/ast/create_event_trig_stmt.go
index 09ae2c20db..276b32a6a0 100644
--- a/internal/sql/ast/create_event_trig_stmt.go
+++ b/internal/sql/ast/create_event_trig_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateEventTrigStmt struct {
 	Trigname   *string
 	Eventname  *string
diff --git a/internal/sql/ast/create_extension_stmt.go b/internal/sql/ast/create_extension_stmt.go
index 4c7c27e481..2fe8755b6a 100644
--- a/internal/sql/ast/create_extension_stmt.go
+++ b/internal/sql/ast/create_extension_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateExtensionStmt struct {
 	Extname     *string
 	IfNotExists bool
diff --git a/internal/sql/ast/create_fdw_stmt.go b/internal/sql/ast/create_fdw_stmt.go
index 03fa16b4a1..fd97378308 100644
--- a/internal/sql/ast/create_fdw_stmt.go
+++ b/internal/sql/ast/create_fdw_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateFdwStmt struct {
 	Fdwname     *string
 	FuncOptions *List
diff --git a/internal/sql/ast/create_foreign_server_stmt.go b/internal/sql/ast/create_foreign_server_stmt.go
index 3fe7b81eac..b7d24445b4 100644
--- a/internal/sql/ast/create_foreign_server_stmt.go
+++ b/internal/sql/ast/create_foreign_server_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateForeignServerStmt struct {
 	Servername  *string
 	Servertype  *string
diff --git a/internal/sql/ast/create_foreign_table_stmt.go b/internal/sql/ast/create_foreign_table_stmt.go
index 34addc785a..6661588786 100644
--- a/internal/sql/ast/create_foreign_table_stmt.go
+++ b/internal/sql/ast/create_foreign_table_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateForeignTableStmt struct {
 	Base       *CreateStmt
 	Servername *string
diff --git a/internal/sql/ast/create_op_class_item.go b/internal/sql/ast/create_op_class_item.go
index 271c143ab0..09621bd0d8 100644
--- a/internal/sql/ast/create_op_class_item.go
+++ b/internal/sql/ast/create_op_class_item.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateOpClassItem struct {
 	Itemtype    int
 	Name        *ObjectWithArgs
diff --git a/internal/sql/ast/create_op_class_stmt.go b/internal/sql/ast/create_op_class_stmt.go
index df4016e290..a4ab7b067c 100644
--- a/internal/sql/ast/create_op_class_stmt.go
+++ b/internal/sql/ast/create_op_class_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateOpClassStmt struct {
 	Opclassname  *List
 	Opfamilyname *List
diff --git a/internal/sql/ast/create_op_family_stmt.go b/internal/sql/ast/create_op_family_stmt.go
index eda950e229..b939625ed3 100644
--- a/internal/sql/ast/create_op_family_stmt.go
+++ b/internal/sql/ast/create_op_family_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateOpFamilyStmt struct {
 	Opfamilyname *List
 	Amname       *string
diff --git a/internal/sql/ast/create_p_lang_stmt.go b/internal/sql/ast/create_p_lang_stmt.go
index 807f2817c2..5f11ce9eb1 100644
--- a/internal/sql/ast/create_p_lang_stmt.go
+++ b/internal/sql/ast/create_p_lang_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreatePLangStmt struct {
 	Replace     bool
 	Plname      *string
diff --git a/internal/sql/ast/create_policy_stmt.go b/internal/sql/ast/create_policy_stmt.go
index 56565258bf..39e244f7a4 100644
--- a/internal/sql/ast/create_policy_stmt.go
+++ b/internal/sql/ast/create_policy_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreatePolicyStmt struct {
 	PolicyName *string
 	Table      *RangeVar
diff --git a/internal/sql/ast/create_publication_stmt.go b/internal/sql/ast/create_publication_stmt.go
index 038bc8aedc..5d0b6a05f5 100644
--- a/internal/sql/ast/create_publication_stmt.go
+++ b/internal/sql/ast/create_publication_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreatePublicationStmt struct {
 	Pubname      *string
 	Options      *List
diff --git a/internal/sql/ast/create_range_stmt.go b/internal/sql/ast/create_range_stmt.go
index 699916139e..6e0aaa5092 100644
--- a/internal/sql/ast/create_range_stmt.go
+++ b/internal/sql/ast/create_range_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateRangeStmt struct {
 	TypeName *List
 	Params   *List
diff --git a/internal/sql/ast/create_role_stmt.go b/internal/sql/ast/create_role_stmt.go
index 49efb88939..144540863e 100644
--- a/internal/sql/ast/create_role_stmt.go
+++ b/internal/sql/ast/create_role_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateRoleStmt struct {
 	StmtType RoleStmtType
 	Role     *string
diff --git a/internal/sql/ast/create_seq_stmt.go b/internal/sql/ast/create_seq_stmt.go
index bbbe3c393f..f7b9ef564d 100644
--- a/internal/sql/ast/create_seq_stmt.go
+++ b/internal/sql/ast/create_seq_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateSeqStmt struct {
 	Sequence    *RangeVar
 	Options     *List
diff --git a/internal/sql/ast/create_stats_stmt.go b/internal/sql/ast/create_stats_stmt.go
index 968063c932..4bd64e162c 100644
--- a/internal/sql/ast/create_stats_stmt.go
+++ b/internal/sql/ast/create_stats_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateStatsStmt struct {
 	Defnames    *List
 	StatTypes   *List
diff --git a/internal/sql/ast/create_stmt.go b/internal/sql/ast/create_stmt.go
index 4c3b9b8370..7982b690a2 100644
--- a/internal/sql/ast/create_stmt.go
+++ b/internal/sql/ast/create_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateStmt struct {
 	Relation       *RangeVar
 	TableElts      *List
diff --git a/internal/sql/ast/create_subscription_stmt.go b/internal/sql/ast/create_subscription_stmt.go
index 90d3da4e31..1d7d49c403 100644
--- a/internal/sql/ast/create_subscription_stmt.go
+++ b/internal/sql/ast/create_subscription_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateSubscriptionStmt struct {
 	Subname     *string
 	Conninfo    *string
diff --git a/internal/sql/ast/create_table_as_stmt.go b/internal/sql/ast/create_table_as_stmt.go
index f83ca453b3..6dbf291de4 100644
--- a/internal/sql/ast/create_table_as_stmt.go
+++ b/internal/sql/ast/create_table_as_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateTableAsStmt struct {
 	Query        Node
 	Into         *IntoClause
diff --git a/internal/sql/ast/create_table_space_stmt.go b/internal/sql/ast/create_table_space_stmt.go
index 70e0881ef7..92951572d3 100644
--- a/internal/sql/ast/create_table_space_stmt.go
+++ b/internal/sql/ast/create_table_space_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateTableSpaceStmt struct {
 	Tablespacename *string
 	Owner          *RoleSpec
diff --git a/internal/sql/ast/create_trig_stmt.go b/internal/sql/ast/create_trig_stmt.go
index a28885a3db..acecce084c 100644
--- a/internal/sql/ast/create_trig_stmt.go
+++ b/internal/sql/ast/create_trig_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateTrigStmt struct {
 	Trigname       *string
 	Relation       *RangeVar
diff --git a/internal/sql/ast/create_user_mapping_stmt.go b/internal/sql/ast/create_user_mapping_stmt.go
index 9b70c50217..f5fd41f76c 100644
--- a/internal/sql/ast/create_user_mapping_stmt.go
+++ b/internal/sql/ast/create_user_mapping_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreateUserMappingStmt struct {
 	User        *RoleSpec
 	Servername  *string
diff --git a/internal/sql/ast/createdb_stmt.go b/internal/sql/ast/createdb_stmt.go
index 6c44e5a464..114505862d 100644
--- a/internal/sql/ast/createdb_stmt.go
+++ b/internal/sql/ast/createdb_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CreatedbStmt struct {
 	Dbname  *string
 	Options *List
diff --git a/internal/sql/ast/current_of_expr.go b/internal/sql/ast/current_of_expr.go
index 19ac87103b..88b457f8d2 100644
--- a/internal/sql/ast/current_of_expr.go
+++ b/internal/sql/ast/current_of_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type CurrentOfExpr struct {
 	Xpr         Node
 	Cvarno      Index
diff --git a/internal/sql/ast/declare_cursor_stmt.go b/internal/sql/ast/declare_cursor_stmt.go
index 32328265b0..82b0e6a2e0 100644
--- a/internal/sql/ast/declare_cursor_stmt.go
+++ b/internal/sql/ast/declare_cursor_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DeclareCursorStmt struct {
 	Portalname *string
 	Options    int
diff --git a/internal/sql/ast/def_elem.go b/internal/sql/ast/def_elem.go
index 2e3846aa31..03ecf88e77 100644
--- a/internal/sql/ast/def_elem.go
+++ b/internal/sql/ast/def_elem.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DefElem struct {
 	Defnamespace *string
 	Defname      *string
diff --git a/internal/sql/ast/define_stmt.go b/internal/sql/ast/define_stmt.go
index 41b055003d..3860183d7e 100644
--- a/internal/sql/ast/define_stmt.go
+++ b/internal/sql/ast/define_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DefineStmt struct {
 	Kind        ObjectType
 	Oldstyle    bool
diff --git a/internal/sql/ast/delete_stmt.go b/internal/sql/ast/delete_stmt.go
index 797057e6fd..3e28add176 100644
--- a/internal/sql/ast/delete_stmt.go
+++ b/internal/sql/ast/delete_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DeleteStmt struct {
 	Relation      *RangeVar
 	UsingClause   *List
diff --git a/internal/sql/ast/do_stmt.go b/internal/sql/ast/do_stmt.go
index 75795aa59a..edc831f15c 100644
--- a/internal/sql/ast/do_stmt.go
+++ b/internal/sql/ast/do_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DoStmt struct {
 	Args *List
 }
diff --git a/internal/sql/ast/drop_owned_stmt.go b/internal/sql/ast/drop_owned_stmt.go
index a440b6ad88..5826c33bbc 100644
--- a/internal/sql/ast/drop_owned_stmt.go
+++ b/internal/sql/ast/drop_owned_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DropOwnedStmt struct {
 	Roles    *List
 	Behavior DropBehavior
diff --git a/internal/sql/ast/drop_role_stmt.go b/internal/sql/ast/drop_role_stmt.go
index d99e089100..95bd26a671 100644
--- a/internal/sql/ast/drop_role_stmt.go
+++ b/internal/sql/ast/drop_role_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DropRoleStmt struct {
 	Roles     *List
 	MissingOk bool
diff --git a/internal/sql/ast/drop_stmt.go b/internal/sql/ast/drop_stmt.go
index cc0944ac21..9bb7d649a0 100644
--- a/internal/sql/ast/drop_stmt.go
+++ b/internal/sql/ast/drop_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type DropStmt struct {
 	Objects    *List
 	RemoveType ObjectType
diff --git a/internal/sql/ast/execute_stmt.go b/internal/sql/ast/execute_stmt.go
index a9166f3c6c..92a237141d 100644
--- a/internal/sql/ast/execute_stmt.go
+++ b/internal/sql/ast/execute_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ExecuteStmt struct {
 	Name   *string
 	Params *List
diff --git a/internal/sql/ast/explain_stmt.go b/internal/sql/ast/explain_stmt.go
index 5a016d1b4b..1d78aa815a 100644
--- a/internal/sql/ast/explain_stmt.go
+++ b/internal/sql/ast/explain_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ExplainStmt struct {
 	Query   Node
 	Options *List
diff --git a/internal/sql/ast/field_select.go b/internal/sql/ast/field_select.go
index f61da7d98e..347abd44bf 100644
--- a/internal/sql/ast/field_select.go
+++ b/internal/sql/ast/field_select.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type FieldSelect struct {
 	Xpr          Node
 	Arg          Node
diff --git a/internal/sql/ast/field_store.go b/internal/sql/ast/field_store.go
index 50b73e5c85..6c2cfc230c 100644
--- a/internal/sql/ast/field_store.go
+++ b/internal/sql/ast/field_store.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type FieldStore struct {
 	Xpr        Node
 	Arg        Node
diff --git a/internal/sql/ast/from_expr.go b/internal/sql/ast/from_expr.go
index 5803310ad7..deb93da4a4 100644
--- a/internal/sql/ast/from_expr.go
+++ b/internal/sql/ast/from_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type FromExpr struct {
 	Fromlist *List
 	Quals    Node
diff --git a/internal/sql/ast/func_expr.go b/internal/sql/ast/func_expr.go
index 1716a0ef55..e571a63049 100644
--- a/internal/sql/ast/func_expr.go
+++ b/internal/sql/ast/func_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type FuncExpr struct {
 	Xpr            Node
 	Funcid         Oid
diff --git a/internal/sql/ast/function_parameter.go b/internal/sql/ast/function_parameter.go
index 9bb668c297..54262f6130 100644
--- a/internal/sql/ast/function_parameter.go
+++ b/internal/sql/ast/function_parameter.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type FunctionParameter struct {
 	Name    *string
 	ArgType *TypeName
diff --git a/internal/sql/ast/grant_role_stmt.go b/internal/sql/ast/grant_role_stmt.go
index 0f9bec95b1..5d785efa7e 100644
--- a/internal/sql/ast/grant_role_stmt.go
+++ b/internal/sql/ast/grant_role_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type GrantRoleStmt struct {
 	GrantedRoles *List
 	GranteeRoles *List
diff --git a/internal/sql/ast/grant_stmt.go b/internal/sql/ast/grant_stmt.go
index df1020b950..cbed7911ac 100644
--- a/internal/sql/ast/grant_stmt.go
+++ b/internal/sql/ast/grant_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type GrantStmt struct {
 	IsGrant     bool
 	Targtype    GrantTargetType
diff --git a/internal/sql/ast/grouping_func.go b/internal/sql/ast/grouping_func.go
index dbce82b566..059bfb9dec 100644
--- a/internal/sql/ast/grouping_func.go
+++ b/internal/sql/ast/grouping_func.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type GroupingFunc struct {
 	Xpr         Node
 	Args        *List
diff --git a/internal/sql/ast/grouping_set.go b/internal/sql/ast/grouping_set.go
index fe99b9e0a4..32db38a607 100644
--- a/internal/sql/ast/grouping_set.go
+++ b/internal/sql/ast/grouping_set.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type GroupingSet struct {
 	Kind     GroupingSetKind
 	Content  *List
diff --git a/internal/sql/ast/import_foreign_schema_stmt.go b/internal/sql/ast/import_foreign_schema_stmt.go
index d76b70e88e..6b333f665b 100644
--- a/internal/sql/ast/import_foreign_schema_stmt.go
+++ b/internal/sql/ast/import_foreign_schema_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ImportForeignSchemaStmt struct {
 	ServerName   *string
 	RemoteSchema *string
diff --git a/internal/sql/ast/index_elem.go b/internal/sql/ast/index_elem.go
index 6ccc3e181e..52ac09688b 100644
--- a/internal/sql/ast/index_elem.go
+++ b/internal/sql/ast/index_elem.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type IndexElem struct {
 	Name          *string
 	Expr          Node
diff --git a/internal/sql/ast/index_stmt.go b/internal/sql/ast/index_stmt.go
index 1edb2e6f6b..c0f12bdb68 100644
--- a/internal/sql/ast/index_stmt.go
+++ b/internal/sql/ast/index_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type IndexStmt struct {
 	Idxname        *string
 	Relation       *RangeVar
diff --git a/internal/sql/ast/infer_clause.go b/internal/sql/ast/infer_clause.go
index 557e16bc66..1e1d93c3d8 100644
--- a/internal/sql/ast/infer_clause.go
+++ b/internal/sql/ast/infer_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type InferClause struct {
 	IndexElems  *List
 	WhereClause Node
diff --git a/internal/sql/ast/inference_elem.go b/internal/sql/ast/inference_elem.go
index 2d04f212cd..d7b4e091c2 100644
--- a/internal/sql/ast/inference_elem.go
+++ b/internal/sql/ast/inference_elem.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type InferenceElem struct {
 	Xpr          Node
 	Expr         Node
diff --git a/internal/sql/ast/insert_stmt.go b/internal/sql/ast/insert_stmt.go
index 12a3a2dbeb..12ee24846c 100644
--- a/internal/sql/ast/insert_stmt.go
+++ b/internal/sql/ast/insert_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type InsertStmt struct {
 	Relation         *RangeVar
 	Cols             *List
diff --git a/internal/sql/ast/into_clause.go b/internal/sql/ast/into_clause.go
index ee56c27ae3..e460b65ea0 100644
--- a/internal/sql/ast/into_clause.go
+++ b/internal/sql/ast/into_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type IntoClause struct {
 	Rel            *RangeVar
 	ColNames       *List
diff --git a/internal/sql/ast/join_expr.go b/internal/sql/ast/join_expr.go
index 3ec33129f9..86e38d2d3b 100644
--- a/internal/sql/ast/join_expr.go
+++ b/internal/sql/ast/join_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type JoinExpr struct {
 	Jointype    JoinType
 	IsNatural   bool
diff --git a/internal/sql/ast/lock_stmt.go b/internal/sql/ast/lock_stmt.go
index c88c1ed116..70ec64dce3 100644
--- a/internal/sql/ast/lock_stmt.go
+++ b/internal/sql/ast/lock_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type LockStmt struct {
 	Relations *List
 	Mode      int
diff --git a/internal/sql/ast/locking_clause.go b/internal/sql/ast/locking_clause.go
index cf347b9108..5800a03806 100644
--- a/internal/sql/ast/locking_clause.go
+++ b/internal/sql/ast/locking_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type LockingClause struct {
 	LockedRels *List
 	Strength   LockClauseStrength
diff --git a/internal/sql/ast/min_max_expr.go b/internal/sql/ast/min_max_expr.go
index d73b05da03..8f0f7ea578 100644
--- a/internal/sql/ast/min_max_expr.go
+++ b/internal/sql/ast/min_max_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type MinMaxExpr struct {
 	Xpr          Node
 	Minmaxtype   Oid
diff --git a/internal/sql/ast/multi_assign_ref.go b/internal/sql/ast/multi_assign_ref.go
index 2ea22a0302..ef0d5554c3 100644
--- a/internal/sql/ast/multi_assign_ref.go
+++ b/internal/sql/ast/multi_assign_ref.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type MultiAssignRef struct {
 	Source   Node
 	Colno    int
diff --git a/internal/sql/ast/named_arg_expr.go b/internal/sql/ast/named_arg_expr.go
index 27fa198ae6..1c802bdd26 100644
--- a/internal/sql/ast/named_arg_expr.go
+++ b/internal/sql/ast/named_arg_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type NamedArgExpr struct {
 	Xpr       Node
 	Arg       Node
diff --git a/internal/sql/ast/next_value_expr.go b/internal/sql/ast/next_value_expr.go
index 12e50fe151..050c090368 100644
--- a/internal/sql/ast/next_value_expr.go
+++ b/internal/sql/ast/next_value_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type NextValueExpr struct {
 	Xpr    Node
 	Seqid  Oid
diff --git a/internal/sql/ast/null_test_expr.go b/internal/sql/ast/null_test_expr.go
index e555746a8e..51fd37f6bb 100644
--- a/internal/sql/ast/null_test_expr.go
+++ b/internal/sql/ast/null_test_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type NullTest struct {
 	Xpr          Node
 	Arg          Node
diff --git a/internal/sql/ast/object_with_args.go b/internal/sql/ast/object_with_args.go
index 297973241f..5b5a1a8bd9 100644
--- a/internal/sql/ast/object_with_args.go
+++ b/internal/sql/ast/object_with_args.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ObjectWithArgs struct {
 	Objname         *List
 	Objargs         *List
diff --git a/internal/sql/ast/on_conflict_clause.go b/internal/sql/ast/on_conflict_clause.go
index 6cf6975dcc..25333d6d59 100644
--- a/internal/sql/ast/on_conflict_clause.go
+++ b/internal/sql/ast/on_conflict_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type OnConflictClause struct {
 	Action      OnConflictAction
 	Infer       *InferClause
diff --git a/internal/sql/ast/on_conflict_expr.go b/internal/sql/ast/on_conflict_expr.go
index 1b3925ce3c..ae9659c754 100644
--- a/internal/sql/ast/on_conflict_expr.go
+++ b/internal/sql/ast/on_conflict_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type OnConflictExpr struct {
 	Action          OnConflictAction
 	ArbiterElems    *List
diff --git a/internal/sql/ast/op_expr.go b/internal/sql/ast/op_expr.go
index a3112465a0..5b371545dc 100644
--- a/internal/sql/ast/op_expr.go
+++ b/internal/sql/ast/op_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type OpExpr struct {
 	Xpr          Node
 	Opno         Oid
diff --git a/internal/sql/ast/param.go b/internal/sql/ast/param.go
index 98a497fb7e..33220800bb 100644
--- a/internal/sql/ast/param.go
+++ b/internal/sql/ast/param.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Param struct {
 	Xpr         Node
 	Paramkind   ParamKind
diff --git a/internal/sql/ast/partition_bound_spec.go b/internal/sql/ast/partition_bound_spec.go
index f652814be9..fb4ada70af 100644
--- a/internal/sql/ast/partition_bound_spec.go
+++ b/internal/sql/ast/partition_bound_spec.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type PartitionBoundSpec struct {
 	Strategy    byte
 	Listdatums  *List
diff --git a/internal/sql/ast/partition_elem.go b/internal/sql/ast/partition_elem.go
index 68bcc649c6..b4be165d36 100644
--- a/internal/sql/ast/partition_elem.go
+++ b/internal/sql/ast/partition_elem.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type PartitionElem struct {
 	Name      *string
 	Expr      Node
diff --git a/internal/sql/ast/partition_range_datum.go b/internal/sql/ast/partition_range_datum.go
index 9e261264a1..312437dd32 100644
--- a/internal/sql/ast/partition_range_datum.go
+++ b/internal/sql/ast/partition_range_datum.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type PartitionRangeDatum struct {
 	Kind     PartitionRangeDatumKind
 	Value    Node
diff --git a/internal/sql/ast/partition_spec.go b/internal/sql/ast/partition_spec.go
index 65ce566c00..2918119e68 100644
--- a/internal/sql/ast/partition_spec.go
+++ b/internal/sql/ast/partition_spec.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type PartitionSpec struct {
 	Strategy   *string
 	PartParams *List
diff --git a/internal/sql/ast/prepare_stmt.go b/internal/sql/ast/prepare_stmt.go
index 3ea1a04b5c..a088ac29b1 100644
--- a/internal/sql/ast/prepare_stmt.go
+++ b/internal/sql/ast/prepare_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type PrepareStmt struct {
 	Name     *string
 	Argtypes *List
diff --git a/internal/sql/ast/query.go b/internal/sql/ast/query.go
index 4e0d80307d..db25dfeb5d 100644
--- a/internal/sql/ast/query.go
+++ b/internal/sql/ast/query.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Query struct {
 	CommandType      CmdType
 	QuerySource      QuerySource
diff --git a/internal/sql/ast/range_function.go b/internal/sql/ast/range_function.go
index 3eca1ec7d8..dd92870aa4 100644
--- a/internal/sql/ast/range_function.go
+++ b/internal/sql/ast/range_function.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeFunction struct {
 	Lateral    bool
 	Ordinality bool
diff --git a/internal/sql/ast/range_subselect.go b/internal/sql/ast/range_subselect.go
index 6bbbaed4a2..aaf4d5adaf 100644
--- a/internal/sql/ast/range_subselect.go
+++ b/internal/sql/ast/range_subselect.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeSubselect struct {
 	Lateral  bool
 	Subquery Node
diff --git a/internal/sql/ast/range_table_func.go b/internal/sql/ast/range_table_func.go
index f0ea4d9f86..e53992edab 100644
--- a/internal/sql/ast/range_table_func.go
+++ b/internal/sql/ast/range_table_func.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeTableFunc struct {
 	Lateral    bool
 	Docexpr    Node
diff --git a/internal/sql/ast/range_table_func_col.go b/internal/sql/ast/range_table_func_col.go
index a4bbcbf56e..2c06db1c08 100644
--- a/internal/sql/ast/range_table_func_col.go
+++ b/internal/sql/ast/range_table_func_col.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeTableFuncCol struct {
 	Colname       *string
 	TypeName      *TypeName
diff --git a/internal/sql/ast/range_table_sample.go b/internal/sql/ast/range_table_sample.go
index 0f9e10c1bd..c5fa2a2880 100644
--- a/internal/sql/ast/range_table_sample.go
+++ b/internal/sql/ast/range_table_sample.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeTableSample struct {
 	Relation   Node
 	Method     *List
diff --git a/internal/sql/ast/range_tbl_entry.go b/internal/sql/ast/range_tbl_entry.go
index 27800339fe..be40e619b4 100644
--- a/internal/sql/ast/range_tbl_entry.go
+++ b/internal/sql/ast/range_tbl_entry.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeTblEntry struct {
 	Rtekind         RTEKind
 	Relid           Oid
diff --git a/internal/sql/ast/range_tbl_function.go b/internal/sql/ast/range_tbl_function.go
index 09c2c341f1..ee0e609f74 100644
--- a/internal/sql/ast/range_tbl_function.go
+++ b/internal/sql/ast/range_tbl_function.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RangeTblFunction struct {
 	Funcexpr          Node
 	Funccolcount      int
diff --git a/internal/sql/ast/reassign_owned_stmt.go b/internal/sql/ast/reassign_owned_stmt.go
index dd837e6672..9162131f46 100644
--- a/internal/sql/ast/reassign_owned_stmt.go
+++ b/internal/sql/ast/reassign_owned_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ReassignOwnedStmt struct {
 	Roles   *List
 	Newrole *RoleSpec
diff --git a/internal/sql/ast/relabel_type.go b/internal/sql/ast/relabel_type.go
index f47ebb936a..e30e93184e 100644
--- a/internal/sql/ast/relabel_type.go
+++ b/internal/sql/ast/relabel_type.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RelabelType struct {
 	Xpr           Node
 	Arg           Node
diff --git a/internal/sql/ast/rename_stmt.go b/internal/sql/ast/rename_stmt.go
index 2fe766804c..cb9c176324 100644
--- a/internal/sql/ast/rename_stmt.go
+++ b/internal/sql/ast/rename_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RenameStmt struct {
 	RenameType   ObjectType
 	RelationType ObjectType
diff --git a/internal/sql/ast/row_compare_expr.go b/internal/sql/ast/row_compare_expr.go
index 8be30a690f..884cc3420d 100644
--- a/internal/sql/ast/row_compare_expr.go
+++ b/internal/sql/ast/row_compare_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RowCompareExpr struct {
 	Xpr          Node
 	Rctype       RowCompareType
diff --git a/internal/sql/ast/row_expr.go b/internal/sql/ast/row_expr.go
index 3ea32852a9..7e996b0e93 100644
--- a/internal/sql/ast/row_expr.go
+++ b/internal/sql/ast/row_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RowExpr struct {
 	Xpr       Node
 	Args      *List
diff --git a/internal/sql/ast/rule_stmt.go b/internal/sql/ast/rule_stmt.go
index 502fdd9959..5ed05a8c5f 100644
--- a/internal/sql/ast/rule_stmt.go
+++ b/internal/sql/ast/rule_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type RuleStmt struct {
 	Relation    *RangeVar
 	Rulename    *string
diff --git a/internal/sql/ast/scalar_array_op_expr.go b/internal/sql/ast/scalar_array_op_expr.go
index 75d0daaaed..6b9ad6ad8b 100644
--- a/internal/sql/ast/scalar_array_op_expr.go
+++ b/internal/sql/ast/scalar_array_op_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ScalarArrayOpExpr struct {
 	Xpr         Node
 	Opno        Oid
diff --git a/internal/sql/ast/sec_label_stmt.go b/internal/sql/ast/sec_label_stmt.go
index 151410c6da..608edb733f 100644
--- a/internal/sql/ast/sec_label_stmt.go
+++ b/internal/sql/ast/sec_label_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SecLabelStmt struct {
 	Objtype  ObjectType
 	Object   Node
diff --git a/internal/sql/ast/set_operation_stmt.go b/internal/sql/ast/set_operation_stmt.go
index ea9fca8a08..9ab1950d1b 100644
--- a/internal/sql/ast/set_operation_stmt.go
+++ b/internal/sql/ast/set_operation_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SetOperationStmt struct {
 	Op            SetOperation
 	All           bool
diff --git a/internal/sql/ast/set_to_default.go b/internal/sql/ast/set_to_default.go
index c538bb9187..c127d3bc77 100644
--- a/internal/sql/ast/set_to_default.go
+++ b/internal/sql/ast/set_to_default.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SetToDefault struct {
 	Xpr       Node
 	TypeId    Oid
diff --git a/internal/sql/ast/sort_by.go b/internal/sql/ast/sort_by.go
index 4b429a3d75..49c4004f28 100644
--- a/internal/sql/ast/sort_by.go
+++ b/internal/sql/ast/sort_by.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SortBy struct {
 	Node        Node
 	SortbyDir   SortByDir
diff --git a/internal/sql/ast/sql_value_function.go b/internal/sql/ast/sql_value_function.go
index a2f974aee9..a2e5214cb0 100644
--- a/internal/sql/ast/sql_value_function.go
+++ b/internal/sql/ast/sql_value_function.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SQLValueFunction struct {
 	Xpr      Node
 	Op       SQLValueFunctionOp
diff --git a/internal/sql/ast/sub_link.go b/internal/sql/ast/sub_link.go
index 02d899c0b7..d61a629785 100644
--- a/internal/sql/ast/sub_link.go
+++ b/internal/sql/ast/sub_link.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SubLinkType uint
 
 const (
diff --git a/internal/sql/ast/sub_plan.go b/internal/sql/ast/sub_plan.go
index 901815add0..2443e86c98 100644
--- a/internal/sql/ast/sub_plan.go
+++ b/internal/sql/ast/sub_plan.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type SubPlan struct {
 	Xpr               Node
 	SubLinkType       SubLinkType
diff --git a/internal/sql/ast/table_func.go b/internal/sql/ast/table_func.go
index add29a8d48..615ff82074 100644
--- a/internal/sql/ast/table_func.go
+++ b/internal/sql/ast/table_func.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type TableFunc struct {
 	NsUris        *List
 	NsNames       *List
diff --git a/internal/sql/ast/table_sample_clause.go b/internal/sql/ast/table_sample_clause.go
index 0a0cb1367a..b92f731430 100644
--- a/internal/sql/ast/table_sample_clause.go
+++ b/internal/sql/ast/table_sample_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type TableSampleClause struct {
 	Tsmhandler Oid
 	Args       *List
diff --git a/internal/sql/ast/target_entry.go b/internal/sql/ast/target_entry.go
index 4d63eedf60..c9f72184e8 100644
--- a/internal/sql/ast/target_entry.go
+++ b/internal/sql/ast/target_entry.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type TargetEntry struct {
 	Xpr             Node
 	Expr            Node
diff --git a/internal/sql/ast/transaction_stmt.go b/internal/sql/ast/transaction_stmt.go
index a2d6ab0d85..a6bf4bdf83 100644
--- a/internal/sql/ast/transaction_stmt.go
+++ b/internal/sql/ast/transaction_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type TransactionStmt struct {
 	Kind    TransactionStmtKind
 	Options *List
diff --git a/internal/sql/ast/truncate_stmt.go b/internal/sql/ast/truncate_stmt.go
index af4f9cae17..6518fccdbc 100644
--- a/internal/sql/ast/truncate_stmt.go
+++ b/internal/sql/ast/truncate_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type TruncateStmt struct {
 	Relations   *List
 	RestartSeqs bool
diff --git a/internal/sql/ast/type_cast.go b/internal/sql/ast/type_cast.go
index d8c3051cf1..8390f5b621 100644
--- a/internal/sql/ast/type_cast.go
+++ b/internal/sql/ast/type_cast.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type TypeCast struct {
 	Arg      Node
 	TypeName *TypeName
diff --git a/internal/sql/ast/update_stmt.go b/internal/sql/ast/update_stmt.go
index ee68ddda36..dd476a3587 100644
--- a/internal/sql/ast/update_stmt.go
+++ b/internal/sql/ast/update_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type UpdateStmt struct {
 	Relation      *RangeVar
 	TargetList    *List
diff --git a/internal/sql/ast/vacuum_stmt.go b/internal/sql/ast/vacuum_stmt.go
index 3e10974d07..942fb762b2 100644
--- a/internal/sql/ast/vacuum_stmt.go
+++ b/internal/sql/ast/vacuum_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type VacuumStmt struct {
 	Options  int
 	Relation *RangeVar
diff --git a/internal/sql/ast/var.go b/internal/sql/ast/var.go
index d6a60f0d4e..0d558180cb 100644
--- a/internal/sql/ast/var.go
+++ b/internal/sql/ast/var.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type Var struct {
 	Xpr         Node
 	Varno       Index
diff --git a/internal/sql/ast/variable_set_stmt.go b/internal/sql/ast/variable_set_stmt.go
index f699d71e79..9307152293 100644
--- a/internal/sql/ast/variable_set_stmt.go
+++ b/internal/sql/ast/variable_set_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type VariableSetStmt struct {
 	Kind    VariableSetKind
 	Name    *string
diff --git a/internal/sql/ast/view_stmt.go b/internal/sql/ast/view_stmt.go
index 814ccb253a..be93733f72 100644
--- a/internal/sql/ast/view_stmt.go
+++ b/internal/sql/ast/view_stmt.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type ViewStmt struct {
 	View            *RangeVar
 	Aliases         *List
diff --git a/internal/sql/ast/window_clause.go b/internal/sql/ast/window_clause.go
index d5189797a9..0a2f082f01 100644
--- a/internal/sql/ast/window_clause.go
+++ b/internal/sql/ast/window_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type WindowClause struct {
 	Name            *string
 	Refname         *string
diff --git a/internal/sql/ast/window_func.go b/internal/sql/ast/window_func.go
index 4dcec0c5a0..eb0ba5c968 100644
--- a/internal/sql/ast/window_func.go
+++ b/internal/sql/ast/window_func.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type WindowFunc struct {
 	Xpr         Node
 	Winfnoid    Oid
diff --git a/internal/sql/ast/with_check_option.go b/internal/sql/ast/with_check_option.go
index 134fd59356..b622db4753 100644
--- a/internal/sql/ast/with_check_option.go
+++ b/internal/sql/ast/with_check_option.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type WithCheckOption struct {
 	Kind     WCOKind
 	Relname  *string
diff --git a/internal/sql/ast/with_clause.go b/internal/sql/ast/with_clause.go
index 487fb688de..6334930439 100644
--- a/internal/sql/ast/with_clause.go
+++ b/internal/sql/ast/with_clause.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type WithClause struct {
 	Ctes      *List
 	Recursive bool
diff --git a/internal/sql/ast/xml_expr.go b/internal/sql/ast/xml_expr.go
index 4c331bda28..cbd82b3653 100644
--- a/internal/sql/ast/xml_expr.go
+++ b/internal/sql/ast/xml_expr.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type XmlExpr struct {
 	Xpr       Node
 	Op        XmlExprOp
diff --git a/internal/sql/ast/xml_serialize.go b/internal/sql/ast/xml_serialize.go
index 1fbf7c3372..32e4cc476d 100644
--- a/internal/sql/ast/xml_serialize.go
+++ b/internal/sql/ast/xml_serialize.go
@@ -1,7 +1,5 @@
 package ast
 
-import ()
-
 type XmlSerialize struct {
 	Xmloption XmlOptionType
 	Expr      Node