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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. In other words, "field" would be only updated if condition is met, otherwise nothing is done.

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

    The MySQL UPDATE Statement. The UPDATE statement is used to modify the existing records in a table. UPDATE Syntax. UPDATE table_name. SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the . WHERE clause in the UPDATE statement.

  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. dev.mysql.com › doc › refmanMySQL :: MySQL 9.0 Reference Manual :: 15.2.17 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.

  5. stackoverflow.com › questions › 15001217sql - Update MySQL with if condition - Stack Overflow

    21 lut 2013 · MySQL supports IF statement. UPDATE abbonamento SET punti = IF(tipo = 'punti', punti - 1, punti), bonus = IF(tipo <> 'punti', bonus - 1, bonus) WHERE id = 17 or you can also use CASE

  6. dba.stackexchange.com › questions › 305706MySQL - Update column based on multiple conditions

    6 sty 2022 · You have two possibilities to do what you want - one works for versions of MySQL from 5.5 (uses aggregates) and upwards and the other works for MySQL 8 and up (uses window functions). All of the code below is available on the fiddle here. NOTE: The fiddle is for MySQL version 8. If you wish to run versions 5.5 (or 5.6 or 5.7), please change the ...

  7. dba.stackexchange.com › questions › 135505mysql - Multiple Update with Multiple Conditions - Database ...

    16 kwi 2016 · UPDATE Tests SET TestScore = CASE WHEN TestId = 10 THEN 1000 WHEN TestId = 11 THEN 1100 END, TestScore2 = CASE WHEN TestId = 10 THEN 2000 WHEN TestId = 11 THEN 2100 END WHERE TestId IN (10, 11) But what happens when there two conditions required, namely the joint combo of (TestId, TestSubId)?

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