摘要:
假设有个表:CREATE TABLE users(id int(6) NOT NULL AUTO_INCREMENT,PRIMARY KEY (id),user_name VARCHAR(20) NOT NULL,emails VARCHAR(50) NOT NULL);初始化表,并添加些记录。 truncate table usersINSERT INTO users(user_name, emails) VALUES('小张','a@email.com,b@email.com,c@email.com');INSERT INTO users(user_name 阅读全文