yaooqinn commented on a change in pull request #26412: [SPARK-29774][SQL] Date
and Timestamp type +/- null should be null as Postgres
URL: https://github.com/apache/spark/pull/26412#discussion_r353273100
##########
File path:
sql/core/src/test/resources/sql-tests/results/typeCoercion/native/decimalPrecision.sql.out
##########
@@ -1041,37 +1033,33 @@ cannot resolve '(CAST('2017-12-11 09:30:00.0' AS
TIMESTAMP) - CAST(1 AS DECIMAL(
-- !query 125
SELECT cast('2017-12-11 09:30:00' as date) - cast(1 as decimal(3, 0)) FROM t
-- !query 125 schema
-struct<>
+struct<date_sub(CAST(2017-12-11 09:30:00 AS DATE), CAST(CAST(1 AS
DECIMAL(3,0)) AS INT)):date>
-- !query 125 output
-org.apache.spark.sql.AnalysisException
-cannot resolve '(CAST('2017-12-11 09:30:00' AS DATE) - CAST(1 AS
DECIMAL(3,0)))' due to data type mismatch: differing types in
'(CAST('2017-12-11 09:30:00' AS DATE) - CAST(1 AS DECIMAL(3,0)))' (date and
decimal(3,0)).; line 1 pos 7
+2017-12-10
-- !query 126
SELECT cast('2017-12-11 09:30:00' as date) - cast(1 as decimal(5, 0)) FROM t
-- !query 126 schema
-struct<>
+struct<date_sub(CAST(2017-12-11 09:30:00 AS DATE), CAST(CAST(1 AS
DECIMAL(5,0)) AS INT)):date>
-- !query 126 output
-org.apache.spark.sql.AnalysisException
-cannot resolve '(CAST('2017-12-11 09:30:00' AS DATE) - CAST(1 AS
DECIMAL(5,0)))' due to data type mismatch: differing types in
'(CAST('2017-12-11 09:30:00' AS DATE) - CAST(1 AS DECIMAL(5,0)))' (date and
decimal(5,0)).; line 1 pos 7
+2017-12-10
-- !query 127
SELECT cast('2017-12-11 09:30:00' as date) - cast(1 as decimal(10, 0)) FROM t
-- !query 127 schema
-struct<>
+struct<date_sub(CAST(2017-12-11 09:30:00 AS DATE), CAST(CAST(1 AS
DECIMAL(10,0)) AS INT)):date>
-- !query 127 output
-org.apache.spark.sql.AnalysisException
-cannot resolve '(CAST('2017-12-11 09:30:00' AS DATE) - CAST(1 AS
DECIMAL(10,0)))' due to data type mismatch: differing types in
'(CAST('2017-12-11 09:30:00' AS DATE) - CAST(1 AS DECIMAL(10,0)))' (date and
decimal(10,0)).; line 1 pos 7
+2017-12-10
-- !query 128
SELECT cast('2017-12-11 09:30:00' as date) - cast(1 as decimal(20, 0)) FROM t
Review comment:
No, our date_add/date_sub is werid too, Hive and Postgres only support type
<=(int4)
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