SHOW DATABASES;
CREATE TATABASE;
USE MYSQL;設定默認的數據庫
SHOW TABLES;
DROP DATABASE;(慎用)
USE mydb;
CREATE TABLE tb1(
->Nmae CHAR(20),(是逗號)
->Age INT);
SHOW TABLES;
DESCRIPTION tb;
DESC tb1;
SELECT * FROM tb1;
INSERT INTO tb1(Name,Age) VALUES ('jerry',13);注意:字段名稱不區分大小寫,表名區分大小寫
INSERT INTO tb1(Name,Age) VALUES ('tom',17),('jay',19);
SELECT * FROM tb1;
SELECT * FROM tb1 where age > 17;
UPDATE tb1 SET Age=56 WHERE NAME='huanglaoxie';修改字段值
DROP TABLE tb1;刪除表
SHOW TABLES;顯示錶已經被刪除了
\q退出