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  1. stackoverflow.com › questions › 2177543MySQL - Using If Then Else in MySQL UPDATE or SELECT Queries

    1 lut 2010 · How do I update a table and set different values upon the condition evaluating to True. For instance : UPDATE Table SET A = '1' IF A > 0 AND A < 1 SET A = '2' IF A > 1 AND A < 2 WHERE A IS NOT NULL;

  2. 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:

  3. dev.mysql.com › doc › mysqlMySQL :: MySQL 8.4 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.

  4. dba.stackexchange.com › questions › 299041mysql - Is it possible to update a variable after using it...

    3 wrz 2021 · I know I can set a user variable where I can either output its value in the SELECT (by just using @x), or output some updated value (by using @x:=@x+1). What I want to do though is output the value @x , while also updating it @x:=@x+1 .

  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. UPDATE abbonamento. SET punti = CASE WHEN tipo = 'punti' THEN punti - 1 ELSE punti END, bonus = CASE WHEN tipo <> 'punti' THEN bonus - 1 ELSE bonus END.

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

    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. The WHERE clause specifies which record (s) that should be updated.

  7. www.mysqltutorial.org › mysql-stored-procedure › mysql-if-statementMySQL IF Statement - MySQL Tutorial

    The IF statement has three forms: IF...THEN statement: Evaluate one condition and execute a code block if the condition is true. IF...THEN...ELSE statement: Evaluate one condition and execute a code block if the condition is true; otherwise, execute another code block. IF...THEN...ELSEIF...ELSE statement: Evaluate multiple conditions and ...

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