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MySQL | TRIM method
schedule Aug 12, 2023
Last updated local_offer
Tags MySQL
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MySQL's TRIM(~) method returns the input string with the specified leading and/or trailing string remstr removed.
Syntax
-- Remove leading and trailing space characters from strSELECT TRIM(str);-- Remove leading and trailing remstr string from strSELECT TRIM(remstr FROM str);-- Remove both or just the leading or trailing remstr string from strSELECT TRIM(BOTH | LEADING | TRAILING remstr FROM str);
Parameters
1. str | string
The string to remove leading and trailing string from.
2. remstr | string | optional
The leading / trailing string to remove. Defaults to ' ' (space).
Return value
The input string with the specified leading / trailing string remstr removed.
Examples
Remove both leading and trailing string
To remove leading and trailing spaces:
SELECT TRIM(' hello ');
+--------------------------------+| TRIM(' hello ') |+--------------------------------+| hello |+--------------------------------+
To remove the leading and trailing string '?':
SELECT TRIM('?' FROM '??????hello???????');
+-------------------------------------+| TRIM('?' FROM '??????hello???????') |+-------------------------------------+| hello |+-------------------------------------+
Remove leading string
To remove just the leading '?':
SELECT TRIM(LEADING '?' FROM '??????hello???????');
+---------------------------------------------+| TRIM(LEADING '?' FROM '??????hello???????') |+---------------------------------------------+| hello??????? |+---------------------------------------------+
Remove trailing string
To remove just the trailing '?':
SELECT TRIM(TRAILING '?' FROM '??????hello???????');
+----------------------------------------------+| TRIM(TRAILING '?' FROM '??????hello???????') |+----------------------------------------------+| ??????hello |+----------------------------------------------+
Published by Arthur Yanagisawa
Edited by 0 others
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Official MySQL Documentation
https://dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_trim
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