Αποτελέσματα Αναζήτησης
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.
This tutorial shows you how to perform cross-table updates by using the MySQL UPDATE JOIN statement with the INNER JOIN or LEFT JOIN clause.
26 Ιαν 2024 · In this guide, we will delve into how to perform an UPDATE using a SELECT query across multiple tables within MySQL 8. This powerful technique allows you to change records in one table based on values in other tables, combining data retrieval with data modification in one step.
1 Νοε 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.
You cannot update a table and select directly from the same table in a subquery. You can work around this by using a multi-table update in which one of the tables is derived from the table that you actually wish to update, and referring to the derived table using an alias.
30 Οκτ 2022 · You can choose the UPDATE JOIN on either the INNER JOIN or the LEFT JOIN. Then you set the new values that you want to update with the where condition to find the particular data. If you want to update all records, you can skip the where condition.
Using INNER JOIN: UPDATE TABLE1 INNER JOIN TABLE2 ON TABLE1.SUBST_ID = TABLE2.SERIAL_ID SET TABLE2.BRANCH_ID = TABLE1.CREATED_ID; Another alternative solution like below: Here I am using WHERE clause instead of JOIN. UPDATE TABLE1, TABLE2 WHERE TABLE1.SUBST_ID = TABLE2.SERIAL_ID SET TABLE2.BRANCH_ID = TABLE1.CREATED_ID;
