2013年7月9日 · Your second DELETE query was nearly correct. Just be sure to put the table name (or an alias) between DELETE and FROM to specify which table you are deleting from. This is simpler than using a nested SELECT statement like in the other answers. Corrected Query (option 1: using full table name):

2009年7月24日 · If you wanted to use a CTE (WITH), then you need to specify from which table you want to delete. In the example that you gave above, you would need the following query (note the "delete t1" instead of "delete from"): with tempTable(col1, col2) as ( select col1, col2 from table2 ) delete t1 from table1 t1 where t1.col1 = tempTable.col1 and t1.col2 = tempTable.col2

2014年6月13日 · You could simplify the query to something like this DELETE FROM inscriptions WHERE not ( agent_inscripteur_1 in (100520, 97927, 99237) OR agent_inscripteur_2 in (100520, 97927, 99237) )

2015年7月4日 · i have some delete queries to run against some pretty huge table (~100 GB), and i want to optimize them as much as possible: delete from table1 where column1 < date_sub(now(), interval 100 hour...

2014年3月28日 · In Laravel 4 Illuminate\\Database\\Query in a Builder class delete function accepts null as an id parameter. And behaivor of this function implies that if I have something like: DB::table('users')->

The query ran for a good portion of time each day for the last 4 years, inserting and deleting data in the table, leaving unused pagefiles behind with out freeing them up. So, that was the main reason of the wait events that were captured by the Extended Events Session and the slowly executed commands upon the table.

scenario. In some cases, the state of the resource suggests that the requested delete may be invalid. You can probably imagine some scenarios yourself where confirmation of a delete is required The solution we have adopted is to pass a parameter to the delete request to indicate that it's ok to proceed with the delete ("?force_delete=true") e.g.

2010年9月27日 · In case you want to remove multiple records based on id, use the __in query lookup. SomeModel.objects.filter(pk__in=[1,2,3,4,5,...]).delete() # SQL equivalent # delete from table_name where id in (1,2,4,5,...); In case you want to delete all records, use .all() to retrieve all queries, then .delete().

2010年12月17日 · However this query: DELETE e.* FROM tableE e WHERE id IN (SELECT id FROM (SELECT id FROM tableE WHERE arg = 1 AND foo = 'bar') x); will work just fine: Query OK, 1 row affected (3.91 sec) Wrap your subquery up in an additional subquery (here named x) and MySQL will happily do what you ask.

The query. delete from foo where foo_id not in ( select max(foo_id) from foo group by foo_bar_id, foo_qux_id ); took 16 sec. deleting 1700 records from 2300 total in table foo. I checked all the indexes on foreign keys as directed in other answers. …