feat(compiler): Support DO statements (#2777)

* feat(compiler): Support DO statements

* fix exec

Author: kyleconroy

internal/compiler/output_columns.go

@@ -115,6 +115,8 @@ func (c *Compiler) outputColumns(qc *QueryCatalog, node ast.Node) ([]*Column, er
 		if isUnion {
 			return c.outputColumns(qc, n.Larg)
 		}
+	case *ast.DoStmt:
+		targets = &ast.List{}
 	case *ast.CallStmt:
 		targets = &ast.List{}
 	case *ast.TruncateStmt, *ast.RefreshMatViewStmt, *ast.NotifyStmt, *ast.ListenStmt:
@@ -509,6 +511,8 @@ func (c *Compiler) sourceTables(qc *QueryCatalog, node ast.Node) ([]*Table, erro
 		list = &ast.List{
 			Items: append(n.FromClause.Items, n.Relations.Items...),
 		}
+	case *ast.DoStmt:
+		list = &ast.List{}
 	case *ast.CallStmt:
 		list = &ast.List{}
 	case *ast.NotifyStmt, *ast.ListenStmt:

internal/compiler/parse.go

@@ -39,6 +39,7 @@ func (c *Compiler) parseQuery(stmt ast.Node, src string, o opts.Parser) (*Query,
 	case *ast.CallStmt:
 	case *ast.SelectStmt:
 	case *ast.DeleteStmt:
+	case *ast.DoStmt:
 	case *ast.InsertStmt:
 		if err := validate.InsertStmt(n); err != nil {
 			return nil, err

internal/endtoend/testdata/do/postgresql/pgx/db/db.go

@@ -0,0 +1,7 @@
+-- name: DoStuff :exec
+DO $$
+    BEGIN
+        ALTER TABLE authors
+        ADD COLUMN marked_for_processing bool;
+    END
+$$;

internal/endtoend/testdata/do/postgresql/pgx/db/models.go

@@ -0,0 +1,5 @@
+CREATE TABLE authors (
+  id   BIGSERIAL PRIMARY KEY,
+  name text      NOT NULL,
+  bio  text
+);

internal/endtoend/testdata/do/postgresql/pgx/db/query.sql.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "db",
+      "engine": "postgresql",
+      "schema": "schema.sql",
+      "queries": "query.sql",
+      "sql_package": "pgx/v5"
+    }
+  ]
+}

internal/endtoend/testdata/do/postgresql/pgx/query.sql

@@ -0,0 +1,7 @@
+-- name: DoStuff :exec
+DO $$
+    BEGIN
+        ALTER TABLE authors
+        ADD COLUMN marked_for_processing bool;
+    END
+$$;

internal/endtoend/testdata/do/postgresql/pgx/schema.sql

@@ -0,0 +1,5 @@
+CREATE TABLE authors (
+  id   BIGSERIAL PRIMARY KEY,
+  name text      NOT NULL,
+  bio  text
+);

internal/endtoend/testdata/do/postgresql/pgx/sqlc.json

@@ -0,0 +1,11 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "db",
+      "engine": "postgresql",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}