tarak271 commented on code in PR #3806:
URL: https://github.com/apache/hive/pull/3806#discussion_r1035898672
##########
ql/src/test/queries/clientpositive/udf_array_distinct.q:
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@@ -0,0 +1,20 @@
+--! qt:dataset:src
+set hive.fetch.task.conversion=more;
+
+DESCRIBE FUNCTION array_distinct;
+DESCRIBE FUNCTION EXTENDED array_distinct;
+
+-- evalutes function for array of primitives
+SELECT array_distinct(array(1, 2, 3, null,3,4)) FROM src tablesample (1 rows);
+
+SELECT array_distinct(array()) FROM src tablesample (1 rows);
+
+SELECT array_distinct(array(null)) FROM src tablesample (1 rows);
+
+SELECT array_distinct(array(1.12, 2.23, 3.34, null,1.11,1.12,2.9)) FROM src
tablesample (1 rows);
+
+SELECT array_distinct(array(1.1234567890, 2.234567890, 3.34567890, null,
3.3456789, 2.234567,1.1234567890)) FROM src tablesample (1 rows);
+
+SELECT array_distinct(array(11234567890, 2234567890, 334567890, null,
11234567890, 2234567890, 334567890, null)) FROM src tablesample (1 rows);
+
+SELECT
array_distinct(array(array("a","b","c","d"),array("a","b","c","d"),array("a","b","c","d","e"),null,array("e","a","b","c","d")))
FROM src tablesample (1 rows);
Review Comment:
Added another table that contains NULL values in array, since `SELECT
array_distinct(null) FROM src tablesample (1 rows);` is throwing exception from
UDF code
`Caused by: org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException: "array"
expected at function ARRAY_DISTINCT, but "void" is found`
`at
org.apache.hadoop.hive.ql.udf.generic.AbstractGenericUDFArrayBase.checkArgCategory(AbstractGenericUDFArrayBase.`
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