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-rw-r--r--tests/dialects/test_redshift.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/dialects/test_redshift.py b/tests/dialects/test_redshift.py
index f4efe24..88168ab 100644
--- a/tests/dialects/test_redshift.py
+++ b/tests/dialects/test_redshift.py
@@ -180,7 +180,7 @@ class TestRedshift(Validator):
"DATEDIFF('day', a, b)",
write={
"redshift": "DATEDIFF(day, a, b)",
- "presto": "DATE_DIFF('day', CAST(SUBSTR(CAST(a AS VARCHAR), 1, 10) AS DATE), CAST(SUBSTR(CAST(b AS VARCHAR), 1, 10) AS DATE))",
+ "presto": "DATE_DIFF('day', CAST(CAST(a AS TIMESTAMP) AS DATE), CAST(CAST(b AS TIMESTAMP) AS DATE))",
},
)
self.validate_all(