如何在 MySQL 中搜索列?
mysqlmysqli database
使用 BETWEEN 子句在列之间搜索。让我们首先创建一个表 −
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Score1 int, Score2 int ); Query OK, 0 rows affected (0.78 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable(Score1,Score2) values(45,65); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable(Score1,Score2) values(450,680); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(Score1,Score2) values(800,900); Query OK, 1 row affected (0.17 sec)
使用 select 语句显示表中的所有记录 −
mysql> select *from DemoTable;
输出
+----+--------+--------+ | Id | Score1 | Score2 | +----+--------+--------+ | 1 | 45 | 65 | | 2 | 450 | 680 | | 3 | 800 | 900 | +----+--------+--------+ 3 rows in set (0.00 sec)
这是在 MySQL 中在列之间搜索的查询。
mysql> select *from DemoTable where 850 between Score1 and Score2;
输出
+----+--------+--------+ | Id | Score1 | Score2 | +----+--------+--------+ | 3 | 800 | 900 | +----+--------+--------+ 1 row in set (0.00 sec)
