![]() ![]() WHERE T1.c1 = T2.c1 AND condition Code language: SQL (Structured Query Language) ( sql ) If you follow the UPDATE statement tutorial, you will notice that there is another way to update data cross-table using the following syntax: UPDATE T1, T2 After that, specify a condition in the WHERE clause to limit rows to rows for updating.Then, assign new values to the columns in T1 and/or T2 tables that you want to update.The JOIN clause must appear right after the UPDATE clause. Next, specify a kind of join you want to use i.e., either INNER JOIN or LEFT JOIN and a join predicate.The data in the table that is not specified after the UPDATE clause will not be updated. Notice that you must specify at least one table after the UPDATE clause. First, specify the main table ( T1 ) and the table that you want the main table to join to ( T2 ) after the UPDATE clause.Let’s examine the MySQL UPDATE JOIN syntax in greater detail: WHERE condition Code language: SQL (Structured Query Language) ( sql ) The syntax of the MySQL UPDATE JOIN is as follows: UPDATE T1, T2, In MySQL, you can use the JOIN clauses in the UPDATE statement to perform the cross-table update. You often use joins to query rows from a table that have (in the case of INNER JOIN) or may not have (in the case of LEFT JOIN) matching rows in another table. We will show you step by step how to use INNER JOIN clause and LEFT JOIN clause with the UPDATE statement. Summary: in this tutorial, you will learn how to use the MySQL UPDATE JOIN statement to perform the cross-table update. ![]()
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