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8 mar 2016 · The main issue is that the inner query cannot be related to your where clause on the outer update statement, because the where filter applies first to the table being updated before the inner subquery even executes. The typical way to handle a situation like this is a multi-table update.
UPDATE table2 t2 JOIN table1 t1 ON t1.id = t2.id SET t2.name = t1.name; RESULTS WITH JOIN. if you are set on doing it with a select you could do it like this. UPDATE table2 t2, ( SELECT Name, id FROM table1 ) t1 SET t2.name = t1.name WHERE t1.id = t2.id RESULTS FROM SELECT
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.
18 mar 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.
A MySQL subquery is a query nested within another query such as SELECT, INSERT, UPDATE or DELETE. Also, a subquery can be nested within another subquery. A MySQL subquery is called an inner query whereas the query that contains the subquery is called an outer query.
3 paź 2024 · In this page we are discussing about the usage of subquery to update the values of columns with the UPDATE statement.
30 lip 2020 · Do you find subqueries useful in SELECT? Learn how to use them in INSERT, UPDATE, and DELETE and see how powerful your SQL queries can be.
