MySQL 查询查找 ID 可以被 4 整除的所有行?
mysqlmysqli database
让我们首先创建一个表，其中有一列作为 ID −
mysql> create table DemoTable ( ID int, StudentName varchar(10), CountryName varchar(20) ); Query OK, 0 rows affected (0.70 sec)
使用 insert 命令在表中插入一些记录 −
mysql> insert into DemoTable values(0,'David','AUS'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values(3,'Chris','UK'); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values(8,'Carol','US'); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable values(9,'Sam','US'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(12,'Robert','UK'); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values(10,'Mike','AUS'); 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 | StudentName | CountryName | +------+-------------+-------------+ | 0 | David | AUS | | 3 | Chris | UK | | 8 | Carol | US | | 9 | Sam | US | | 12 | Robert | UK | | 10 | Mike | AUS | +------+-------------+-------------+ 6 rows in set (0.00 sec)
以下查询用于查找 ID 可以被 4 整除的所有行 −
mysql> select *from DemoTable where (ID%4)=0;
输出
+------+-------------+-------------+ | ID | StudentName | CountryName | +------+-------------+-------------+ | 0 | David | AUS | | 8 | Carol | US | | 12 | Robert | UK | +------+-------------+-------------+ 3 rows in set (0.30 sec)
