MySQL Bugs: #3264: FROM_DAYS() doesn't work properly in range comparison

Bug #3264	FROM_DAYS() doesn't work properly in range comparison
Submitted:	22 Mar 2004 13:17	Modified:	24 Mar 2004 22:51
Reporter:	jocelyn fournier (Silver Quality Contributor)	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server	Severity:	S2 (Serious)
Version:	4.1.2 bk latest pull	OS:	Linux (linux)
Assigned to:	Alexey Botchkov	CPU Architecture:	Any

Description:
Hi,

When using range comparison and FROM_DAYS(), it seems the returned type is not a DATE format as expected, and thus no rows is returned in my query.

Regards,
  Jocelyn

How to repeat:
mysql> CREATE TABLE test_date (d DATETIME);
Query OK, 0 rows affected (0.01 sec)

mysql> INSERT INTO test_date VALUES (NOW());
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO test_date VALUES (NOW());
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO test_date VALUES (NOW());
Query OK, 1 row affected (0.00 sec)

mysql> SELECT * FROM test_date;
+---------------------+
| d                   |
+---------------------+
| 2004-03-22 22:07:35 |
| 2004-03-22 22:07:36 |
| 2004-03-22 22:07:38 |
+---------------------+
3 rows in set (0.00 sec)

mysql> SELECT * FROM test_date WHERE d>FROM_DAYS(TO_DAYS(NOW())) AND d<=FROM_DAYS(TO_DAYS(NOW())+1);
Empty set (0.00 sec)

=> bug, this should return all rows

mysql> SELECT * FROM test_date WHERE d>cast(FROM_DAYS(TO_DAYS(NOW())) as DATE) AND d<=cast(FROM_DAYS(TO_DAYS(NOW())+1) as DATE);
+---------------------+
| d                   |
+---------------------+
| 2004-03-22 22:07:35 |
| 2004-03-22 22:07:36 |
| 2004-03-22 22:07:38 |
+---------------------+
3 rows in set (0.00 sec)

=> ok if I explicitly cast FROM_DAYS result in DATE format

Verified against 4.1.2.  Thank you.

bk commit - 4.1 tree (hf:1.1713)

Thank you for your bug report. This issue has been committed to our
source repository of that product and will be incorporated into the
next release.

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