dtenedor commented on code in PR #41864:
URL: https://github.com/apache/spark/pull/41864#discussion_r1256251978


##########
sql/core/src/test/resources/sql-tests/inputs/named-function-arguments.sql:
##########
@@ -1,5 +1,36 @@
+-- Test for named arguments for Mask
 SELECT mask('AbCD123-@$#', lowerChar => 'q', upperChar => 'Q', otherChar => 
'o', digitChar => 'd');
 SELECT mask(lowerChar => 'q', upperChar => 'Q', otherChar => 'o', digitChar => 
'd', str => 'AbCD123-@$#');
 SELECT mask('AbCD123-@$#', lowerChar => 'q', upperChar => 'Q', digitChar => 
'd');
 SELECT mask(lowerChar => 'q', upperChar => 'Q', digitChar => 'd', str => 
'AbCD123-@$#');
+
+-- Test for named arguments for CountMinSketchAgg
+create temporary view t2 as select * from values
+  ('val2a', 6S, 12, 14L, float(15), 20D, 20E2, timestamp '2014-04-04 
01:01:00.000', date '2014-04-04'),
+  ('val1b', 10S, 12, 19L, float(17), 25D, 26E2, timestamp '2014-05-04 
01:01:00.000', date '2014-05-04'),
+  ('val1b', 8S, 16, 119L, float(17), 25D, 26E2, timestamp '2015-05-04 
01:01:00.000', date '2015-05-04'),
+  ('val1c', 12S, 16, 219L, float(17), 25D, 26E2, timestamp '2016-05-04 
01:01:00.000', date '2016-05-04'),
+  ('val1b', null, 16, 319L, float(17), 25D, 26E2, timestamp '2017-05-04 
01:01:00.000', null),
+  ('val2e', 8S, null, 419L, float(17), 25D, 26E2, timestamp '2014-06-04 
01:01:00.000', date '2014-06-04'),
+  ('val1f', 19S, null, 519L, float(17), 25D, 26E2, timestamp '2014-05-04 
01:01:00.000', date '2014-05-04'),
+  ('val1b', 10S, 12, 19L, float(17), 25D, 26E2, timestamp '2014-06-04 
01:01:00.000', date '2014-06-04'),
+  ('val1b', 8S, 16, 19L, float(17), 25D, 26E2, timestamp '2014-07-04 
01:01:00.000', date '2014-07-04'),
+  ('val1c', 12S, 16, 19L, float(17), 25D, 26E2, timestamp '2014-08-04 
01:01:00.000', date '2014-08-05'),
+  ('val1e', 8S, null, 19L, float(17), 25D, 26E2, timestamp '2014-09-04 
01:01:00.000', date '2014-09-04'),
+  ('val1f', 19S, null, 19L, float(17), 25D, 26E2, timestamp '2014-10-04 
01:01:00.000', date '2014-10-04'),
+  ('val1b', null, 16, 19L, float(17), 25D, 26E2, timestamp '2014-05-04 
01:01:00.000', null)
+  as t2(t2a, t2b, t2c, t2d, t2e, t2f, t2g, t2h, t2i);
+
+SELECT hex(count_min_sketch(t2d, seed => 1, epsilon => 0.5d, confidence => 
0.5d)) FROM t2;
+
+-- Unexpected positional argument

Review Comment:
   We should probably make a separate error class for that to help allay 
confusion, the error message can explicitly mention that the argument was 
provided once by name and also one or more times positionally, and this is not 
allowed.



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