diff options
Diffstat (limited to 'sqlglot/optimizer/isolate_table_selects.py')
| -rw-r--r-- | sqlglot/optimizer/isolate_table_selects.py | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sqlglot/optimizer/isolate_table_selects.py b/sqlglot/optimizer/isolate_table_selects.py index 79e3ed5..a6524b8 100644 --- a/sqlglot/optimizer/isolate_table_selects.py +++ b/sqlglot/optimizer/isolate_table_selects.py @@ -12,7 +12,12 @@ def isolate_table_selects(expression, schema=None): continue for _, source in scope.selected_sources.values(): - if not isinstance(source, exp.Table) or not schema.column_names(source): + if ( + not isinstance(source, exp.Table) + or not schema.column_names(source) + or isinstance(source.parent, exp.Subquery) + or isinstance(source.parent.parent, exp.Table) + ): continue if not source.alias: |