Merge pull request #833 from ydb-platform/placeholder

* Removed support of placeholder "_" for ignoring columns in `databas…

Author: asmyasnikov

CHANGELOG.md

@@ -1,3 +1,5 @@
+* Removed support of placeholder "_" for ignoring columns in `database/sql` result sets
+
 ## v3.52.1
 * Merged `internal/xsql/conn.{GetTables,GetAllTables}` methods for `DRY`
 * Replaced `internal/xsql.Connector.PathNormalizer` default from `nopPathNormalizer` to `bind.TablePathPrefix` with database name as path prefix

internal/xsql/rows.go

@@ -23,8 +23,6 @@ var (
 	_ driver.Rows                           = &single{}
 
 	_ types.Scanner = &valuer{}
-
-	ignoreColumnNamePlaceholder = "_"
 )
 
 type rows struct {
@@ -45,9 +43,7 @@ func (r *rows) Columns() []string {
 	})
 	cs := make([]string, 0, r.result.CurrentResultSet().ColumnCount())
 	r.result.CurrentResultSet().Columns(func(m options.Column) {
-		if m.Name != ignoreColumnNamePlaceholder {
-			cs = append(cs, m.Name)
-		}
+		cs = append(cs, m.Name)
 	})
 	return cs
 }