add GetRows method

.gitignore

@@ -1,2 +1,3 @@
 .idea/*
+/.devcontainer
 .DS_Store

dbr.go

@@ -163,7 +163,7 @@ func exec(ctx context.Context, runner runner, log EventReceiver, builder Builder
 	return result, nil
 }
 
-func query(ctx context.Context, runner runner, log EventReceiver, builder Builder, d Dialect, dest interface{}) (int, error) {
+func queryRows(ctx context.Context, runner runner, log EventReceiver, builder Builder, d Dialect) (*sql.Rows, *string, error) {
 	i := interpolator{
 		Buffer:       NewBuffer(),
 		Dialect:      d,
@@ -172,7 +172,7 @@ func query(ctx context.Context, runner runner, log EventReceiver, builder Builde
 	err := i.interpolate(placeholder, []interface{}{builder})
 	query, value := i.String(), i.Value()
 	if err != nil {
-		return 0, log.EventErrKv("dbr.select.interpolate", err, kvs{
+		return nil, nil, log.EventErrKv("dbr.select.interpolate", err, kvs{
 			"sql":  query,
 			"args": fmt.Sprint(value),
 		})
@@ -197,14 +197,24 @@ func query(ctx context.Context, runner runner, log EventReceiver, builder Builde
 			traceImpl.SpanError(ctx, err)
 		}
 
-		return 0, log.EventErrKv("dbr.select.load.query", err, kvs{
+		return nil, &query, log.EventErrKv("dbr.select.load.query", err, kvs{
 			"sql": query,
 		})
 	}
+
+	return rows, &query, nil
+}
+
+func query(ctx context.Context, runner runner, log EventReceiver, builder Builder, d Dialect, dest interface{}) (int, error) {
+	rows, query, err := queryRows(ctx, runner, log, builder, d)
+	if err != nil {
+		return 0, err
+	}
+
 	count, err := Load(rows, dest)
 	if err != nil {
 		return 0, log.EventErrKv("dbr.select.load.scan", err, kvs{
-			"sql": query,
+			"sql": *query,
 		})
 	}
 	return count, nil

select_builder.go

@@ -2,6 +2,7 @@ package dbr
 
 import (
 	"context"
+	"database/sql"
 	"reflect"
 	"time"
 )
@@ -170,6 +171,13 @@ func (b *selectBuilder) LoadStructsContext(ctx context.Context, value interface{
 	return c, err
 }
 
+// GetRows returns sql.Rows from query result.
+func (b *selectBuilder) GetRows(ctx context.Context) (*sql.Rows, error) {
+	rows, _, err := queryRows(ctx, b.runner, b.EventReceiver, b, b.Dialect)
+
+	return rows, err
+}
+
 // LoadValue loads any value from query result with background context, returns ErrNotFound if there is no result
 func (b *selectBuilder) LoadValue(value interface{}) error {
 	return b.LoadValueContext(context.Background(), value)