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MySQL | TRIM method

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String
schedule Jul 1, 2022
Last updated
local_offer 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 str
SELECT TRIM(str);
-- Remove leading and trailing remstr string from str
SELECT TRIM(remstr FROM str);
-- Remove both or just the leading or trailing remstr string from str
SELECT 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 |
+----------------------------------------------+
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Published by Arthur Yanagisawa
Edited by 0 others
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