SQLize Online / PHPize Online  /  SQLtest Online

A A A
Share      Blog   Popular
Copy Format Clear
create table t ( user_id int, value_1 int, value_2 int ); insert into t values (100, 50, 1), (100, 50, 2), (101, 50, 1), (101, 50, 2), (102, 50, 2), (102, 50, 3); select * from t; SELECT user_id, value_1, value_2, ROW_NUMBER () OVER (partition by user_id, value_1 ORDER BY value_2) AS row_num FROM t group by user_id, value_1, value_2; with t1 as( SELECT user_id, value_1, value_2, ROW_NUMBER () OVER (partition by user_id, value_1 ORDER BY value_2) AS row_num FROM t ) delete from t using t1 where t1.user_id = t.user_id and t1.value_1 = t.value_1 and t1.value_2 = t.value_2 and t1.row_num>1; select * from t;
Stuck with a problem? Got Error? Ask ChatGPT!
Copy Clear