strongduanmu commented on code in PR #4074:
URL: https://github.com/apache/calcite/pull/4074#discussion_r1881178774
##########
core/src/test/resources/sql/functions.iq:
##########
@@ -31,6 +31,80 @@ select bit_count(8);
!ok
+select bit_count('8');
++--------+
+| EXPR$0 |
++--------+
+| 1 |
++--------+
+(1 row)
+
+!ok
+
+select bit_count('a');
++--------+
+| EXPR$0 |
++--------+
+| 0 |
++--------+
+(1 row)
+
+!ok
+
+select bit_count('');
++--------+
+| EXPR$0 |
++--------+
+| 0 |
++--------+
+(1 row)
+
+!ok
+
+select bit_count(null);
++--------+
+| EXPR$0 |
++--------+
+| |
++--------+
+(1 row)
+
+!ok
+
+select bit_count(1 + 1);
++--------+
+| EXPR$0 |
++--------+
+| 1 |
++--------+
+(1 row)
+
+!ok
+
+select bit_count(true);
++--------+
+| EXPR$0 |
++--------+
+| 1 |
++--------+
+(1 row)
+
+!ok
+
+select bit_count(joinedat), bit_count(joinetime), bit_count(joinetimestamp)
from emps_date_time ORDER BY empno;
Review Comment:
Yes, I have verified the results in MySQL. Here are the results on MySQL.
```
mysql> SELECT BIT_COUNT(DATE '1996-08-03'), BIT_COUNT(TIME '16:22:34'),
BIT_COUNT(TIMESTAMP '1996-08-03 16:22:34') UNION ALL
-> SELECT BIT_COUNT(DATE '2001-01-01'), BIT_COUNT(TIME '12:20:00'),
BIT_COUNT(TIMESTAMP '2001-01-01 12:20:00') UNION ALL
-> SELECT BIT_COUNT(DATE '2002-05-03'), BIT_COUNT(TIME '13:12:14'),
BIT_COUNT(TIMESTAMP '2002-05-03 13:12:14') UNION ALL
-> SELECT BIT_COUNT(DATE '2005-09-07'), BIT_COUNT(TIME '06:02:04'),
BIT_COUNT(TIMESTAMP '2005-09-07 06:02:04') UNION ALL
-> SELECT BIT_COUNT(DATE '2007-01-01'), BIT_COUNT(TIME '23:09:59'),
BIT_COUNT(TIMESTAMP '2007-01-01 23:09:59');
+------------------------------+----------------------------+--------------------------------------------+
| BIT_COUNT(DATE '1996-08-03') | BIT_COUNT(TIME '16:22:34') |
BIT_COUNT(TIMESTAMP '1996-08-03 16:22:34') |
+------------------------------+----------------------------+--------------------------------------------+
| 12 | 11 |
24 |
| 12 | 8 |
22 |
| 14 | 5 |
22 |
| 16 | 9 |
25 |
| 14 | 10 |
21 |
+------------------------------+----------------------------+--------------------------------------------+
5 rows in set (0.01 sec)
```
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