增:INSERT INTO table_x (列名...) VALUES (值...)
删除:DELETE FROM table_x WHERE ...
改:UPDATE table_x SET ... WHERE...
查:SELECT 列名... FROM table_x WHERE ...
增:INSERT INTO table_x (列名...) VALUES (值...)
删除:DELETE FROM table_x WHERE ...
改:UPDATE table_x SET ... WHERE...
查:SELECT 列名... FROM table_x WHERE ...