写出下列SQL语句的功能ALTER TABLE goods RENAME tb_goods;
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写出下列SQL语句的功能ALTER TABLE tb_goods CHANGE name g_name VARCHAR(30);
写出下列SQL语句的功能ALTER TABLE tb_goods ADD picture VARCHAR(255);
写出下列SQL语句的功能ALTER TABLE tb_goods DROP picture;
写出下列SQL语句的功能INSERT INTO goods VALUES(2,'糖类','牛奶糖',7.5,200,'2018-02-02 13:40:40');