diff options
Diffstat (limited to 'sqlglot/optimizer/lower_identities.py')
| -rw-r--r-- | sqlglot/optimizer/lower_identities.py | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/sqlglot/optimizer/lower_identities.py b/sqlglot/optimizer/lower_identities.py index 1cc76cf..fae1726 100644 --- a/sqlglot/optimizer/lower_identities.py +++ b/sqlglot/optimizer/lower_identities.py @@ -1,5 +1,4 @@ from sqlglot import exp -from sqlglot.helper import ensure_collection def lower_identities(expression): @@ -40,13 +39,10 @@ def lower_identities(expression): lower_identities(expression.right) traversed |= {"this", "expression"} - for k, v in expression.args.items(): + for k, v in expression.iter_expressions(): if k in traversed: continue - - for child in ensure_collection(v): - if isinstance(child, exp.Expression): - child.transform(_lower, copy=False) + v.transform(_lower, copy=False) return expression |