SELECT '1+2' REGEXP '1\\+2'; : REGEXP « Regular Expressions « MySQL Tutorial

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MySQL Tutorial » Regular Expressions » REGEXP

24. 10. 8. SELECT '1+2' REGEXP '1\\+2';


mysql>

mysql>

mysql>

mysql> SELECT '1+2' REGEXP '1+2';

+--------------------+

| '1+2' REGEXP '1+2' |

+--------------------+

|                  0 |

+--------------------+

1 row in set (0.00 sec)



mysql> SELECT '1+2' REGEXP '1\+2';

+---------------------+

| '1+2' REGEXP '1\+2' |

+---------------------+

|                   0 |

+---------------------+

1 row in set (0.00 sec)



mysql> SELECT '1+2' REGEXP '1\\+2';

+----------------------+

| '1+2' REGEXP '1\\+2' |

+----------------------+

|                    1 |

+----------------------+

1 row in set (0.00 sec)



mysql>

24. 10. REGEXP
	24. 10. 1.	Characters and classes used by the REGEXP and NOT REGEXP operators (or RLIKE and NOT RLIKE, which are synonyms)
	24. 10. 2.	To find names beginning with 'J', use '^' to match the beginning of the name
	24. 10. 3.	To matches only lowercase 'b' at the beginning of a name
	24. 10. 4.	To find names ending with 'es', use '$' to match the end of the name
	24. 10. 5.	To find names containing an 'e', use this query
	24. 10. 6.	To find names containing exactly five characters
	24. 10. 7.	To find names containing exactly five characters using {n}
	24. 10. 8.	SELECT '1+2' REGEXP '1\\+2';
	24. 10. 9.	REGEXP '^[a-f]'
	24. 10. 10.	REGEXP '^[mn].*[sz]$'

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