Oracle FOR Loop Data Deletion Guide

In Oracle database, you can use a FOR loop structure and the DELETE statement to delete data. Here is an example:

DECLARE
  CURSOR c_data IS
    SELECT * FROM your_table; -- 替换为要删除数据的表名

BEGIN
  FOR row_data IN c_data LOOP
    DELETE FROM your_table -- 替换为要删除数据的表名
    WHERE primary_key_column = row_data.primary_key_column; -- 替换为表的主键列名

    COMMIT; -- 可选，根据需求决定是否需要提交事务
  END LOOP;
END;

In the provided code, a cursor named c_data is first defined to store the data to be deleted. Next, a FOR loop is used to iterate through the data in the cursor, and a DELETE statement is used to delete each row of data. Finally, a COMMIT statement can be used to commit the transaction if necessary.

Please note that when using a FOR loop to delete data, it is important to pay attention to the order and conditions of deletion to avoid deleting incorrect data.