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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. 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. 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.

  4. 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.

  5. dba.stackexchange.com › questions › 60417mysql - Update DATE field when another field in the same table...

    The typical way to do that is to create a stored procedure which inserts into/updates the target table, then updates the other row(s), all in a transaction. Another option for you might be the ON UPDATE constraint that you can add to your table.

  6. stackoverflow.com › questions › 1886928MySQL UPDATE using IF condition - Stack Overflow

    11 mar 2015 · IF EXISTS (SELECT id FROM user_roles WHERE user_id = 5 AND end_date IS NULL) THEN UPDATE user p JOIN user_roles ur ON p.id = ur.user_id SET ur.end_date = NOW() , p.end_date = NOW() , p.reason = "Retired" WHERE p.id = 5 AND ur.end_date IS NULL ELSE UPDATE user SET end_date = NOW() , reason = "Retired" WHERE id = 5 END IF

  7. www.slingacademy.com › article › curdate-and-current-date-in-mysql-8-explainedCURDATE() and CURRENT_DATE() in MySQL 8: Explained with examples

    26 sty 2024 · The CURDATE() and the CURRENT_DATE() functions are quite simple – they both return the current date without the time component. The date is returned in ‘YYYY-MM-DD’ format, or ‘YYYYMMDD’ format depending on whether the function is used in a string context or numeric context respectively.

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