Fix(optimizer): handle edge case in DATE_TRUNC simplification (#2368)

tobymao · Oct 3, 2023 · 0d1e674 · 0d1e674
1 parent f777155
commit 0d1e674
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diff --git a/sqlglot/optimizer/simplify.py b/sqlglot/optimizer/simplify.py
@@ -728,7 +728,7 @@ def simplify_datetrunc_predicate(expression: exp.Expression) -> exp.Expression:
         l = expression.this
         rs = expression.expressions
 
-        if all(_is_datetrunc_predicate(l, r) for r in rs):
+        if rs and all(_is_datetrunc_predicate(l, r) for r in rs):
             unit = l.unit.name.lower()
 
             ranges = []

diff --git a/tests/fixtures/optimizer/simplify.sql b/tests/fixtures/optimizer/simplify.sql
@@ -684,6 +684,9 @@ CONCAT('a', x, y, 'bc');
 'a' || 'b' || x;
 CONCAT('ab', x);
 
+CONCAT(a, b) IN (SELECT * FROM foo WHERE cond);
+CONCAT(a, b) IN (SELECT * FROM foo WHERE cond);
+
 --------------------------------------
 -- DATE_TRUNC
 --------------------------------------