mysqldml操作命令
时间: 2023-09-25 07:15:13 浏览: 109
MySql操作命令
MySQL的DML操作命令主要包括INSERT、SELECT、UPDATE和DELETE。INSERT用于向表中插入新的数据,语法格式为:
INSERT INTO 表名 [ ( 字段1, 字段2, 字段3, … ) ] VALUES ( ‘值1’, ‘值2’, ‘值3’, …)。
SELECT用于查询表中的数据,并返回所需的结果集,语法格式为:
SELECT 列名 FROM 表名 WHERE 条件。
UPDATE用于修改表中已有的数据,语法格式为:
UPDATE 表名 SET 列名 = 值 WHERE 条件。
DELETE用于删除表中的数据,语法格式为:
DELETE FROM 表名 WHERE 条件。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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