AcKing-Sam commented on issue #32354:
URL: https://github.com/apache/doris/issues/32354#issuecomment-2008590303
@yongjinhou Hi, could you please assign this issue to me?
I made tests on `master` and this bug still exists.
Reproduce:
```mysql
CREATE TABLE regtest (
id int,
value_col string,
pattern_col string
)
ENGINE=OLAP
DISTRIBUTED BY HASH(id) BUCKETS 4
PROPERTIES (
"replication_allocation" = "tag.location.default: 1"
);
INSERT INTO regtest VALUES
(0, 'prefix0_infix0_suffix0', 'prefix0'),
(1, '%prefix1_infix1_suffix1', 'prefix1'),
(2, 'prefix2_$infix2$suffix2', 'infix2'),
(3, 'prefix3^infix3_suffix3', 'infix3'),
(4, '$$$prefix4_$$$infix4%%%^^suffix4', 'suffix4'),
(5, 'prefix5%%$$$__infix5$^^^%%$$suffix5', 'suffix5'),
(6, 'prefix6__^^%%%infix6%^suffix6%', 'prefix6_^^%%%infix6%^suffix6%'),
(7, '%%%^^^$$$prefix7_infix7_suffix7%%%^^^$$$', 'prefix7_infix7_suffix7'),
(8, 'prefix8^^%%%infix8%%$$^^___suffix8', ''),
(9, 'prefix9$$%%%^^infix9&&%%$$suffix9', NULL);
```
Results:
```mysql
mysql> select * from regtest;
+------+------------------------------------------+-------------------------------+
| id | value_col | pattern_col
|
+------+------------------------------------------+-------------------------------+
| 1 | %prefix1_infix1_suffix1 | prefix1
|
| 7 | %%%^^^$$$prefix7_infix7_suffix7%%%^^^$$$ | prefix7_infix7_suffix7
|
| 0 | prefix0_infix0_suffix0 | prefix0
|
| 6 | prefix6__^^%%%infix6%^suffix6% |
prefix6_^^%%%infix6%^suffix6% |
| 2 | prefix2_$infix2$suffix2 | infix2
|
| 4 | $$$prefix4_$$$infix4%%%^^suffix4 | suffix4
|
| 8 | prefix8^^%%%infix8%%$$^^___suffix8 |
|
| 3 | prefix3^infix3_suffix3 | infix3
|
| 5 | prefix5%%$$$__infix5$^^^%%$$suffix5 | suffix5
|
| 9 | prefix9$$%%%^^infix9&&%%$$suffix9 | NULL
|
+------+------------------------------------------+-------------------------------+
10 rows in set (0.04 sec)
mysql> SELECT * FROM regtest WHERE value_col REGEXP '.*' ORDER BY id;
Empty set (0.02 sec)
mysql> SELECT * FROM regtest WHERE value_col LIKE '%' ORDER BY id;
+------+------------------------------------------+-------------------------------+
| id | value_col | pattern_col
|
+------+------------------------------------------+-------------------------------+
| 0 | prefix0_infix0_suffix0 | prefix0
|
| 1 | %prefix1_infix1_suffix1 | prefix1
|
| 2 | prefix2_$infix2$suffix2 | infix2
|
| 3 | prefix3^infix3_suffix3 | infix3
|
| 4 | $$$prefix4_$$$infix4%%%^^suffix4 | suffix4
|
| 5 | prefix5%%$$$__infix5$^^^%%$$suffix5 | suffix5
|
| 6 | prefix6__^^%%%infix6%^suffix6% |
prefix6_^^%%%infix6%^suffix6% |
| 7 | %%%^^^$$$prefix7_infix7_suffix7%%%^^^$$$ | prefix7_infix7_suffix7
|
| 8 | prefix8^^%%%infix8%%$$^^___suffix8 |
|
| 9 | prefix9$$%%%^^infix9&&%%$$suffix9 | NULL
|
+------+------------------------------------------+-------------------------------+
10 rows in set (0.02 sec)
```
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