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  1. stackoverflow.com › questions › 14893355MySQL: update field only if condition is met - Stack Overflow

    29 maj 2017 · Is it possible to do UPDATE query on MySQL which updates field value only if certain condition is met? Something like this: UPDATE test SET CASE WHEN true THEN field = 1 END WHERE id = 123

  2. dba.stackexchange.com › questions › 29352mysql - Update field with new string made from characters in...

    1 sty 2006 · UPDATE wp_postmeta SET meta_value = CONCAT(SUBSTRING(meta_value FROM 7), SUBSTRING(meta_value, 4, 2), SUBSTRING(meta_value, 1, 2)); Run that as a SELECT first to verifying the output before update and make sure it's what you're really looking for.

  3. dirask.com › posts › MySQL-UPDATE-query-with-IF-condition-conditional-update-pOv4JDMySQL - UPDATE query with IF condition (conditional update)

    In this article, we would like to show you UPDATE query with IF condition in MySQL. Quick solution: UPDATE `table_name` SET `column_name` = IF(condition , if_true, if_false); Practical example. To show UPDATE query with IF condition, we will use the following users table:

  4. www.w3schools.com › mysql › mysql_updateMySQL UPDATE Statement - W3Schools

    SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the. WHERE clause in the UPDATE statement. The WHERE clause specifies which record (s) that should be updated. If you omit the WHERE clause, all records in the table will be updated!

  5. dev.mysql.com › doc › refmanMySQL :: MySQL 8.0 Reference Manual :: 13.2.13 UPDATE Statement

    The WHERE clause, if given, specifies the conditions that identify which rows to update. With no WHERE clause, all rows are updated. If the ORDER BY clause is specified, the rows are updated in the order that is specified. The LIMIT clause places a limit on the number of rows that can be updated.

  6. stackoverflow.com › questions › 26550905MySQL Update if field contains certain characters

    28 paź 2014 · Try this in MySQL: update tbl set field = field2 where field REGEXP 'j|k|l|m|n|o|p|q|r';

  7. www.restack.io › p › sql-character-encoding-validation-answer-conditional-update-mysqlConditional Update Mysql - Restackio

    6 lis 2024 · Learn how to perform conditional updates in MySQL while ensuring SQL character encoding validation for data integrity.

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