MariaDB NOT RLIKE Function
The MariaDB NOT RLIKE function is the negation of RLIKE function.
The NOT RLIKE function is a synonym for the NOT REGEXP function.
Syntax
expression NOT RLIKE pattern
Parameters
expression |
Required. Specify a character expression such as a column or field. |
pattern |
Required. Specify the regular expression matching information. See the table below for pattern syntax. |
Regular Expression Patterns
Symbol | Description |
---|---|
^ | Matches the beginning of a string. |
$ | Matches the end of a string. |
* | Matches zero or more occurrences. |
+ | Matches one or more occurrences. |
? | Matches zero or one occurrence. |
. | Matches any character except NULL. |
| | Used like an "OR" to specify more than one alternative. |
[ ] | Matches any single character specified within []. |
[^ ] | Matches any single character that is not specified within []. |
- | Represents a range of characters. |
( ) | Used to group expressions as a subexpression. |
{m} | Matches m times. |
{m,} | Matches at least m times. |
{m,n} | Matches at least m times, but no more than n times. |
\n | n is a number between 1 and 9. Matches the nth subexpression found within ( ) before encountering \n. |
\d | Matches a digit character. |
\D | Matches a nondigit character. |
\w | Matches a word character. |
\W | Matches a nonword character. |
\s | Matches a whitespace character. |
\S | matches a non-whitespace character. |
*? | Matches the preceding pattern zero or more occurrences. |
+? | Matches the preceding pattern one or more occurrences. |
?? | Matches the preceding pattern zero or one occurrence. |
{n}? | Matches the preceding pattern n times. |
{n,}? | Matches the preceding pattern at least n times. |
{n,m}? | Matches the preceding pattern at least n times, but not more than m times. |
[..] | Matches one collation element that can be more than one character. |
[=character_class=] | Represents an equivalence class. It matches all characters with the same collation value, including itself. |
[:character_class:] | Represents a character class that matches all characters belonging to that class. |
List of standard class name
Character Class Name | Meaning |
---|---|
alnum | Alphanumeric characters |
alpha | Alphabetic characters |
blank | Whitespace characters |
cntrl | Control characters |
digit | Digit characters |
graph | Graphic characters |
lower | Lowercase alphabetic characters |
Graphic or space characters | |
punct | Punctuation characters |
space | Space, tab, newline, and carriage return |
upper | Uppercase alphabetic characters |
xdigit | Hexadecimal digit characters |
Example: Match on more than one alternative
Consider a table called Employee. The below query is used to fetch all records from this table where Name does NOT contain either "Ja", "Je" or "Ji". To specify more than one alternative for the second character of the pattern, | is used.
SELECT * FROM Employee WHERE Name NOT RLIKE 'J(a|e|i)';
Example: Match on Beginning
Consider a table called Employee. The below query is used to fetch all records from this table where Name does NOT start with "J". Here, ^ is used to specify starting character of the pattern.
SELECT * FROM Employee WHERE Name NOT RLIKE '^J';
Example: Match on End
Consider a table called Employee. The below query is used to fetch all records from this table where Name does NOT end with "n". Here, $ is used to specify end character of the pattern.
SELECT * FROM Employee WHERE Name NOT RLIKE 'n$';
Example: Non-Matching List
Consider a table called Employee. The below query is used to fetch all records from this table where Name does NOT contain either "Ja", "Jb", "Jc" or "Jd". To specify the second character of the pattern, [ ] is used.
SELECT * FROM Employee WHERE Name NOT RLIKE 'J[a-d]';
Example: Not-Matching Character Class
Consider a table called Employee. The below query is used to fetch all records from this table where Address does NOT contain any punctuation character.
SELECT * FROM Employee WHERE Address NOT RLIKE '[[:punct:]]';
Example: Escaping Characters
To escape special character, it should be preceded with two backslashes \\. For example: the below query can be used to fetch all records from Employee table where Address does NOT contain a ( character.
SELECT * FROM Employee WHERE Address NOT RLIKE '\\(';
❮ MariaDB - REGEXP