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# MySQL | RLIKE

schedule Aug 10, 2023
Last updated
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MySQL
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MySQL's RLIKE operator returns 1 if the expr string matches the regular expression pat. If there is no match 0 is returned.

# Syntax

SELECT expr RLIKE pat;

# Parameters

1. expr | string

The string we are matching with regular expression pattern.

2. pat | regular expression

The regular expression pattern for matching.

# Examples

Consider the following table about some students:

student_id

fname

lname

day_enrolled

age

1

Sky

Towner

2015-12-03

17

stowner1

2

Ben

Davis

2016-04-20

19

bdavis2

3

Travis

Apple

2018-08-14

18

tapple3

4

Arthur

David

2016-04-01

16

5

Benjamin

Town

2014-01-01

17

btown5

The above sample table can be created using the code here.

## Basic usage

To check whether student last names match the regular expression pattern '[ae]':

SELECT lname, lname RLIKE '[ae]'
FROM students;
+--------+---------------------+
| lname | lname RLIKE '[ae]' |
+--------+---------------------+
| Towner | 1 |
| Davis | 1 |
| Apple | 1 |
| David | 1 |
| Town | 0 |
+--------+---------------------+

All last names except 'Town' return 1 as they contain either an 'a' or an 'e'.

Edited by 0 others
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