- INSERT
INSERT INTO <表名> (字段1, 字段2, ...) VALUES (值1, 值2, ...);
INSERT INTO students (class_id, name, gender, score) VALUES (2, '大牛', 'M', 80);
INSERT INTO students (class_id, name, gender, score) VALUES (1, '大宝', 'M', 87), (2, '二宝', 'M', 81); - UPDATE
UPDATE <表名> SET 字段1=值1, 字段2=值2, ... WHERE ...;
UPDATE students SET name='大牛', score=66 WHERE id=1;
UPDATE students SET name='小牛', score=77 WHERE id>=5 AND id<=7;
UPDATE students SET score=score+10 WHERE score<80;
UPDATE students SET score=100 WHERE id=999;
UPDATE students SET score=60; - DELETE
DELETE FROM <表名> WHERE ...;
DELETE FROM students WHERE id=1;
DELETE FROM students WHERE id>=5 AND id<=7;
DELETE FROM students WHERE id=999;
DELETE FROM students;
修改数据
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