import code from oblast/benchmark/internal

Minimally edited to s/oblast/gsql/.

1 files changed, 66 insertions, 0 deletions

diff --git a/results.go b/results.go
new file mode 100644
index 0000000..510bb08
--- /dev/null
+++ b/results.go
@@ -0,0 +1,66 @@
+// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
+// SPDX-License-Identifier: Apache-2.0
+
+package gg_pgx
+
+import (
+	"database/sql"
+	"errors"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"go.xyrillian.de/gg/gsql"
+)
+
+type wrappedRows struct {
+	inner pgx.Rows
+}
+
+var _ gsql.Rows = wrappedRows{}
+
+// Columns implements the [gsql.Rows] interface.
+func (r wrappedRows) Columns() ([]string, error) {
+	descriptions := r.inner.FieldDescriptions()
+	result := make([]string, len(descriptions))
+	for idx, desc := range descriptions {
+		result[idx] = desc.Name
+	}
+	return result, nil
+}
+
+// Close implements the [gsql.Rows] interface.
+func (r wrappedRows) Close() error {
+	r.inner.Close()
+	return nil
+}
+
+// Err implements the [gsql.Rows] interface.
+func (r wrappedRows) Err() error {
+	return r.inner.Err()
+}
+
+// Next implements the [gsql.Rows] interface.
+func (r wrappedRows) Next() bool {
+	return r.inner.Next()
+}
+
+// Scan implements the [gsql.Rows] interface.
+func (r wrappedRows) Scan(args ...any) error {
+	return r.inner.Scan(args...)
+}
+
+type wrappedResult struct {
+	inner pgconn.CommandTag
+}
+
+var _ sql.Result = wrappedResult{}
+
+// LastInsertId implements the [sql.Result] interface.
+func (r wrappedResult) LastInsertId() (int64, error) {
+	return 0, errors.New("PostgreSQL does not support LastInsertId()")
+}
+
+// LastInsertId implements the [sql.Result] interface.
+func (r wrappedResult) RowsAffected() (int64, error) {
+	return r.inner.RowsAffected(), nil
+}