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Editorial Team
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Asked: 2026-06-09T02:20:10+00:00

I want to add the string ,’2′) to a row in my database. The

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I want to add the string ,'2') to a row in my database. The current string in the database looks like this: ('1','42','2122','3')
If I was to add it normally, this would be the result: ('1','42','2122','3'),'2').
How can I delete the last character of the string, that is already in the database, so it will end up like this: ('1','42','2122','3','2')
I tried using concat and (sub)str_replace, but that did not give me the desired result.

Is this possible using SQL only, without first fetching the record and updating it?

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1 Answer

  1. Editorial Team

    Well, you can use the replace function of mysql

    This function is pretty much similar to ‘Find-Replace’ dialog box found in editors. This would replace all occurrences of ‘FIND_String’ with ‘REPLACE_String’ in ‘String_Expression’

    Example – Select REPLACE ('Vipin', 'i', 'X')
    Output – VXpXn
    Syntax: Replace ( 'String_Expression', 'FIND_String', 'REPLACE_String' )

    docs: http://www.electrictoolbox.com/mysql-select-replace/

    In your case, if you have only one closing bracket then you can use the following query to update you table..

    PHP code

    $newString = ",'2')";

$sql = "UPDATE <tableName> SET <fieldName> = replace(<fieldName>, ')', ". $newString .")";

    Well keep in mind this will replace every instance of ')' to $newString so this solution will work only if there are only one closing bracket in the end.

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