Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16712#discussion_r98345076
--- Diff:
sql/core/src/test/resources/sql-tests/inputs/subquery/scalar-subquery/scalar-subquery-select.sql
---
@@ -0,0 +1,139 @@
+-- A test suite for scalar subquery in SELECT clause
+
+create temporary view t1 as select * from values
+ ("t1a", 6S, 8, 10L, float(15.0), 20D, 20E2, timestamp '2014-04-04
00:00:00.000', date '2014-04-04'),
+ ("t1b", 8S, 16, 19L, float(17.0), 25D, 26E2, timestamp '2014-05-04
01:01:00.000', date '2014-05-04'),
+ ("t1a", 16S, 12, 21L, float(15.0), 20D, 20E2, timestamp '2014-06-04
01:02:00.001', date '2014-06-04'),
+ ("t1a", 16S, 12, 10L, float(15.0), 20D, 20E2, timestamp '2014-07-04
01:01:00.000', date '2014-07-04'),
+ ("t1c", 8S, 16, 19L, float(17.0), 25D, 26E2, timestamp '2014-05-04
01:02:00.001', date '2014-05-05'),
+ ("t1d", null, 16, 22L, float(17.0), 25D, 26E2, timestamp '2014-06-04
01:01:00.000', null),
+ ("t1d", null, 16, 19L, float(17.0), 25D, 26E2, timestamp '2014-07-04
01:02:00.001', null),
+ ("t1e", 10S, null, 25L, float(17.0), 25D, 26E2, timestamp '2014-08-04
01:01:00.000', date '2014-08-04'),
+ ("t1e", 10S, null, 19L, float(17.0), 25D, 26E2, timestamp '2014-09-04
01:02:00.001', date '2014-09-04'),
+ ("t1d", 10S, null, 12L, float(17.0), 25D, 26E2, timestamp '2015-05-04
01:01:00.000', date '2015-05-04'),
+ ("t1a", 6S, 8, 10L, float(15.0), 20D, 20E2, timestamp '2014-04-04
01:02:00.001', date '2014-04-04'),
+ ("t1e", 10S, null, 19L, float(17.0), 25D, 26E2, timestamp '2014-05-04
01:01:00.000', date '2014-05-04')
+ as t1(t1a, t1b, t1c, t1d, t1e, t1f, t1g, t1h, t1i);
+
+create temporary view t2 as select * from values
+ ("t2a", 6S, 12, 14L, float(15), 20D, 20E2, timestamp '2014-04-04
01:01:00.000', date '2014-04-04'),
+ ("t1b", 10S, 12, 19L, float(17), 25D, 26E2, timestamp '2014-05-04
01:01:00.000', date '2014-05-04'),
+ ("t1b", 8S, 16, 119L, float(17), 25D, 26E2, timestamp '2015-05-04
01:01:00.000', date '2015-05-04'),
+ ("t1c", 12S, 16, 219L, float(17), 25D, 26E2, timestamp '2016-05-04
01:01:00.000', date '2016-05-04'),
+ ("t1b", null, 16, 319L, float(17), 25D, 26E2, timestamp '2017-05-04
01:01:00.000', null),
+ ("t2e", 8S, null, 419L, float(17), 25D, 26E2, timestamp '2014-06-04
01:01:00.000', date '2014-06-04'),
+ ("t1f", 19S, null, 519L, float(17), 25D, 26E2, timestamp '2014-05-04
01:01:00.000', date '2014-05-04'),
+ ("t1b", 10S, 12, 19L, float(17), 25D, 26E2, timestamp '2014-06-04
01:01:00.000', date '2014-06-04'),
+ ("t1b", 8S, 16, 19L, float(17), 25D, 26E2, timestamp '2014-07-04
01:01:00.000', date '2014-07-04'),
+ ("t1c", 12S, 16, 19L, float(17), 25D, 26E2, timestamp '2014-08-04
01:01:00.000', date '2014-08-05'),
+ ("t1e", 8S, null, 19L, float(17), 25D, 26E2, timestamp '2014-09-04
01:01:00.000', date '2014-09-04'),
+ ("t1f", 19S, null, 19L, float(17), 25D, 26E2, timestamp '2014-10-04
01:01:00.000', date '2014-10-04'),
+ ("t1b", 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);
+
+create temporary view t3 as select * from values
+ ("t3a", 6S, 12, 110L, float(15), 20D, 20E2, timestamp '2014-04-04
01:02:00.000', date '2014-04-04'),
+ ("t3a", 6S, 12, 10L, float(15), 20D, 20E2, timestamp '2014-05-04
01:02:00.000', date '2014-05-04'),
+ ("t1b", 10S, 12, 219L, float(17), 25D, 26E2, timestamp '2014-05-04
01:02:00.000', date '2014-05-04'),
+ ("t1b", 10S, 12, 19L, float(17), 25D, 26E2, timestamp '2014-05-04
01:02:00.000', date '2014-05-04'),
+ ("t1b", 8S, 16, 319L, float(17), 25D, 26E2, timestamp '2014-06-04
01:02:00.000', date '2014-06-04'),
+ ("t1b", 8S, 16, 19L, float(17), 25D, 26E2, timestamp '2014-07-04
01:02:00.000', date '2014-07-04'),
+ ("t3c", 17S, 16, 519L, float(17), 25D, 26E2, timestamp '2014-08-04
01:02:00.000', date '2014-08-04'),
+ ("t3c", 17S, 16, 19L, float(17), 25D, 26E2, timestamp '2014-09-04
01:02:00.000', date '2014-09-05'),
+ ("t1b", null, 16, 419L, float(17), 25D, 26E2, timestamp '2014-10-04
01:02:00.000', null),
+ ("t1b", null, 16, 19L, float(17), 25D, 26E2, timestamp '2014-11-04
01:02:00.000', null),
+ ("t3b", 8S, null, 719L, float(17), 25D, 26E2, timestamp '2014-05-04
01:02:00.000', date '2014-05-04'),
+ ("t3b", 8S, null, 19L, float(17), 25D, 26E2, timestamp '2015-05-04
01:02:00.000', date '2015-05-04')
+ as t3(t3a, t3b, t3c, t3d, t3e, t3f, t3g, t3h, t3i);
+
+-- Group 1: scalar subquery in SELECT clause
+-- no correlation
+-- TC 01.01
+-- more than one scalar subquery
+SELECT (SELECT min(t3d) FROM t3) min_t3d,
+ (SELECT max(t2h) FROM t2) max_t2h
+FROM t1
+WHERE t1a = 't1c'
+;
--- End diff --
The style issue. How about following the other test cases? Do not put `;`
as a separate ilne?
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