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Use case for greatest/least #22

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Use case for greatest/least #22

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4 changes: 3 additions & 1 deletion upgrade-toolkit/Hive Code Scanner/data/recommendation_items.csv
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Original file line number Diff line number Diff line change
Expand Up @@ -80,4 +80,6 @@
"hive.vectorized.execution.mapjoin.native.fast.hashtable.enabled","property used to be FALSE, after upgrade this changes to TRUE","me","\w+\s+hive.vectorized.execution.mapjoin.native.fast.hashtable.enabled(\s{0,1}|\s+)\=(\s{0,1}|\s+)false"
"hive.vectorized.use.row.serde.deserialize","property used to be FALSE, after upgrade this changes to TRUE","me","\w+\s+hive.vectorized.use.row.serde.deserialize(\s{0,1}|\s+)\=(\s{0,1}|\s+)false"
"cast timestamp","By Default, casting a numeric type value into a timestamp produces a result that reflects the UTC instead of the time zone of the cluster.","se","CAST(\s+|\s{0})\(\d+\s+AS\s+TIMESTAMP"
"cast zeros as null","By Default, casting of an invalid date returns a result. Please ensure cast is as desired.","se","CAST(\s+|\s{0})\((\s+|\s{0})('0000-00-00'|'000-00-00 00:00:00')"
"cast zeros as null","By Default, casting of an invalid date returns a result. Please ensure cast is as desired.","se","CAST(\s+|\s{0})\((\s+|\s{0})('0000-00-00'|'000-00-00 00:00:00')"
"greatest","If NULL is found while using greatest in CDP you could return the incorrect result, use NVL to set a default","me","\w+\s+greatest\("
"least","If NULL is found while using least in CDP you could return the incorrect result, use NVL to set a default","me","\w+\s+least\("
2 changes: 2 additions & 0 deletions upgrade-toolkit/Hive Code Scanner/test_hqls/test1.hql
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Expand Up @@ -79,3 +79,5 @@ SET hive.vectorized.use.row.serde.deserialize = FALSE;
CREATE TABLE mydb.employees (id INT, name STRING, salary FLOAT);
ALTER TABLE mydb.employees ADD COLUMNS (email STRING);
DROP TABLE mydb.employees;

SELECT greatest(col1), least(col2) FROM mydb.employees;