How to delete a table with multiple fields?
DELETE FROM table1 WHERE table1.id IN (SELECT id FROM table1 a JOIN table2 b ON a.field1 = b.field1 AND a.field2 = b.field2 AND a.field3 = b.field3 AND b.id = ? ) DELETE A.* FROM table1 A INNER JOIN table2 b ON A.id = B.id AND a.field1 = b.field1 AND a.field2 = b.field2 AND a.field3 = b.field3 AND b.id = ?;
How to delete table based on criteria in another table?
Oftentimes, one wants to delete some records from a table based on criteria in another table. How do you delete from one of those tables without removing the records in both table? The key is that you specify the name of the table to be deleted from as the SELECT.
How to delete table based on composite key?
I have two identical tables (column wise, not data), table1 and table2. I wish to delete the records in table1 in which the composite key (col1, col2) exists in both tables.
Do you have two from clauses with multi-table DELETE statement?
Yes, you have two FROM clauses with a multi-table DELETE statement. This is essentially just an anti-join turned into a deletion. Thanks for contributing an answer to Database Administrators Stack Exchange!
How to delete a subquery from a table?
2. check the number 3 is in the result of the subquery which satisfies the condition bellow : 3. ‘agent_code’ of ‘agent1’ table and ‘agent_code’ of ‘customer’ table should not be same, In this page, we are going to discuss, how rows can be removed from a table by SQL DELETE statement along with the SQL MIN () function.
How to delete multiple columns in SQL Server?
There is no WHERE (x,y) = (a,b) syntax in SQL Server, sorry. This is how you perform a delete, based on a join, regardless of how many columns are involved in the join: In general, using exists is better than using in with a subquery because NULLs can cause the latter to do behavior in strange ways.
Do you need to delete a row from a table?
If col3 of Table1 matches with col3 of Table3 and col1,col2 of Table1 matches with col1,col2 of Table2 then I need to delete the row from Table2. However I am unable to use Table3 in this query.