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-rw-r--r--tests/dialects/test_postgres.py14
1 files changed, 10 insertions, 4 deletions
diff --git a/tests/dialects/test_postgres.py b/tests/dialects/test_postgres.py
index 4e57b36..c391052 100644
--- a/tests/dialects/test_postgres.py
+++ b/tests/dialects/test_postgres.py
@@ -578,12 +578,18 @@ class TestPostgres(Validator):
def test_string_concat(self):
self.validate_all(
+ "SELECT CONCAT('abcde', 2, NULL, 22)",
+ write={
+ "postgres": "SELECT CONCAT(COALESCE(CAST('abcde' AS TEXT), ''), COALESCE(CAST(2 AS TEXT), ''), COALESCE(CAST(NULL AS TEXT), ''), COALESCE(CAST(22 AS TEXT), ''))",
+ },
+ )
+ self.validate_all(
"CONCAT(a, b)",
write={
- "": "CONCAT(COALESCE(a, ''), COALESCE(b, ''))",
- "duckdb": "CONCAT(COALESCE(a, ''), COALESCE(b, ''))",
- "postgres": "CONCAT(COALESCE(a, ''), COALESCE(b, ''))",
- "presto": "CONCAT(CAST(COALESCE(a, '') AS VARCHAR), CAST(COALESCE(b, '') AS VARCHAR))",
+ "": "CONCAT(COALESCE(CAST(a AS TEXT), ''), COALESCE(CAST(b AS TEXT), ''))",
+ "duckdb": "CONCAT(COALESCE(CAST(a AS TEXT), ''), COALESCE(CAST(b AS TEXT), ''))",
+ "postgres": "CONCAT(COALESCE(CAST(a AS TEXT), ''), COALESCE(CAST(b AS TEXT), ''))",
+ "presto": "CONCAT(CAST(COALESCE(CAST(a AS VARCHAR), '') AS VARCHAR), CAST(COALESCE(CAST(b AS VARCHAR), '') AS VARCHAR))",
},
)
self.validate_all(