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Editorial Team
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Asked: 2026-05-27T15:25:39+00:00

mysql> select ‘ab’ like ‘a_%’; +—————–+ | ‘ab’ like ‘a_%’ | +—————–+ | 1

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mysql> select 'ab' like 'a_%';
+-----------------+
| 'ab' like 'a_%' |
+-----------------+
|               1 |
+-----------------+
1 row in set (0.00 sec)

mysql> select 'ab' like 'a\_%';
+------------------+
| 'ab' like 'a\_%' |
+------------------+
|                0 |
+------------------+
1 row in set (0.00 sec)

mysql> select 'a_b' like 'a\_%';
+-------------------+
| 'a_b' like 'a\_%' |
+-------------------+
|                 1 |
+-------------------+
1 row in set (0.00 sec)

Why do I need to escape _?

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1 Answer

  1. Editorial Team

    Because _ and % are both special characters for LIKE.

    _ matches one character, % any number of characters.

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