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  1. stackoverflow.com › questions › 1262786MySQL - UPDATE query based on SELECT Query - Stack Overflow

    You can actually do this one of two ways: MySQL update join syntax: UPDATE tableA a. INNER JOIN tableB b ON a.name_a = b.name_b.

  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.geeksforgeeks.org › how-to-update-table-rows-in-mysql-using-subqueryHow to Update Table Rows Using Subquery in MySQL - GeeksforGeeks

    26 cze 2024 · Updating table rows using subqueries in MySQL enables precise modifications based on specific conditions or values from other tables. This technique leverages subqueries within the SET or WHERE clauses of the UPDATE statement, allowing dynamic and context-specific updates.

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

    Each value can be given as an expression, or the keyword DEFAULT to set a column explicitly to its default value. The WHERE clause, if given, specifies the conditions that identify which rows to update. With no WHERE clause, all rows are updated.

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

    16 kwi 2016 · UPDATE Tests AS old INNER JOIN ( SELECT 10 AS TestId, 25 AS TestSubId, 1000 AS TestScore, 2000 AS TestScore2 UNION ALL SELECT 11, 22, 1100, 2100 ) AS new ON old.TestId = new.TestId AND old.TestSubId = new.TestSubId SET old.TestScore = new.TestScore, old.TestScore2 = new.TestScore2 ;

  6. www.squash.io › how-to-update-mysql-query-based-on-select-queryHow to Update Records in MySQL with a Select Query - Squash

    1 lis 2023 · To update a MySQL query based on a select query, you can use the UPDATE statement with a subquery. This allows you to update rows in one table based on the values returned from a select query on another table.

  7. stackoverflow.com › questions › 2576019select - MySQL: How to do a conditional update? - Stack Overflow

    4 kwi 2010 · UPDATE car c SET c.type = 1 WHERE c.owner_id IN ($ids) AND c.status = (SELECT * FROM (SELECT MAX(c2.status) FROM car c2 WHERE c.owner_id = c2.owner_id) AS T1) Surprisingly, this will work even though it seems that it should be equivalent to the first query.

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