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mysql如何删除表的一行数据
2022-06-23 03:42:00 【亿速云】
mysql如何删除表的一行数据
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在mysql中,可以使用DELETE语句配合WHERE子句和LIMIT子句来删除表的一行数据,语法为“DELETE FROM 表名 WHERE 删除条件 LIMIT 1;”;DELETE语句用于删除表中一行或者多行数据,而WHERE子句用于设置删除条件,LIMIT子句用于设置删除数据的行数。

本教程操作环境:windows7系统、mysql8版本、Dell G3电脑。
在mysql中,可以使用DELETE语句配合WHERE子句和LIMIT子句来删除表的一行数据。
DELETE FROM <表名> [WHERE 子句] [LIMIT 子句]
WHERE 子句:可选项。表示为删除操作限定删除条件,若省略该子句,则代表删除该表中的所有行。
LIMIT 子句:可选项。用于告知服务器在控制命令被返回到客户端前被删除行的最大值。
而想要删除表的一行数据,就需要设置 LIMIT 1即可。
DELETE FROM 表名 WHERE 删除条件 LIMIT 1;
示例:
创建一个tb_students_score表,插入数据后,查询全部数据
SELECT * FROM tb_students_score;

删除成绩大于90的一行数据
DELETE FROM tb_students_score WHERE student_score>90 LIMIT 1;

ok,删除了student_score字段值为99的一行数据。
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