delete query sql code example

Example 1: sql delete

DELETE FROM table_name WHERE condition;
-- 			Ex.
DELETE FROM Customers WHERE CustomerName='Mustafa Mbari';

Example 2: sql delete where in select

DELETE FROM tableA
WHERE ROWID IN 
  ( SELECT q.ROWID
    FROM tableA q
      INNER JOIN tableB u on (u.qlabel = q.entityrole AND u.fieldnum = q.fieldnum) 
    WHERE (LENGTH(q.memotext) NOT IN (8,9,10) OR q.memotext NOT LIKE '%/%/%')
      AND (u.FldFormat = 'Date'));

Example 3: sql delete

DELETE FROM my_table;		-- all rows
DELETE FROM my_table WHERE my_id = 12345;
DELETE FROM my_table WHERE my_id IN (SELECT id2 FROM my_table2);
COMMIT;		-- don't forget it...

Example 4: sql delete where in

-- Deletes all records where `columnName` matches the values in brackets.
DELETE FROM tableName WHERE columnName IN ('val1', 'val2', 'val3');

Example 5: SQL DELETE

Mit DELETE werden einzelne oder mehrere Datensätze gelöscht. Mit WHERE 
werden nur bestimmte Datensätez gelöscht. 

  DELETE FROM suppliers
  WHERE 
      supplier_name = 'Microsoft';

Example 6: sql delete

Delete data from a table.
Example: Removes a user with a user_id of 674.
DELETE FROM users WHERE user_id = 674;

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