fix: pgx closed batch return pointer if need #1959

Author: flymedllva

internal/codegen/golang/templates/pgx/batchCode.tmpl

@@ -107,7 +107,7 @@ func (b *{{.MethodName}}BatchResults) QueryRow(f func(int, {{.Ret.DefineType}},
      var {{.Ret.Name}} {{.Ret.Type}}
      if b.closed {
         if f != nil {
-          f(t, {{.Ret.Name}}, errors.New("batch already closed"))
+          f(t, {{if .Ret.IsPointer}}nil{{else}}{{.Ret.Name}}{{end}}, errors.New("batch already closed"))
         }
         continue
      }

internal/endtoend/testdata/emit_result_and_params_struct_pointers/go/db.go renamed to internal/endtoend/testdata/emit_result_and_params_struct_pointers/mysql/go/db.go

@@ -0,0 +1,16 @@
+CREATE TABLE foo (a integer, b integer);
+
+-- name: InsertValues :batchone
+INSERT INTO foo (a, b)
+VALUES ($1, $2)
+ON CONFLICT DO NOTHING
+RETURNING *;
+
+-- name: GetOne :one
+SELECT * FROM foo WHERE a = ? AND b = ? LIMIT 1;
+
+-- name: GetAll :many
+SELECT * FROM foo;
+
+-- name: GetAllAByB :many
+SELECT a FROM foo WHERE b = ?;

internal/endtoend/testdata/emit_result_and_params_struct_pointers/go/models.go renamed to internal/endtoend/testdata/emit_result_and_params_struct_pointers/mysql/go/models.go

@@ -0,0 +1,19 @@
+{
+  "version": "2",
+  "sql": [
+    {
+      "engine": "postgresql",
+      "schema": "query.sql",
+      "queries": "query.sql",
+      "gen": {
+        "go": {
+          "package": "querytest",
+          "sql_package": "pgx/v4",
+          "out": "go",
+          "emit_result_struct_pointers": true,
+          "emit_params_struct_pointers": true
+        }
+      }
+    }
+  ]
+}

internal/endtoend/testdata/emit_result_and_params_struct_pointers/go/querier.go renamed to internal/endtoend/testdata/emit_result_and_params_struct_pointers/mysql/go/querier.go

@@ -10,7 +10,7 @@ require (
 	github.com/jackc/pgx/v4 v4.6.1-0.20200606145419-4e5062306904
 	github.com/kyleconroy/sqlc-testdata v0.0.0-20200512000015-15313bc43553
 	github.com/lib/pq v1.9.0
-	github.com/tabbed/pqtype v0.1.0 // indirect
+	github.com/tabbed/pqtype v0.1.0
 	github.com/volatiletech/null/v8 v8.1.2
 	gopkg.in/guregu/null.v4 v4.0.0
 )

internal/endtoend/testdata/emit_result_and_params_struct_pointers/go/query.sql.go renamed to internal/endtoend/testdata/emit_result_and_params_struct_pointers/mysql/go/query.sql.go

@@ -14,8 +14,6 @@ github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRx
 github.com/gofrs/uuid v4.0.0+incompatible h1:1SD/1F5pU8p29ybwgQSwpQk+mwdRrXCYuPhW6m+TnJw=
 github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
-github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
-github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/jackc/chunkreader v1.0.0 h1:4s39bBR8ByfqH+DKm8rQA3E1LHZWB9XWcrz8fqaZbe0=