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  • MySQL基础之 LIKE操作符

    LIKE操作符

      作用:用于在WHERE子句中搜索列中的指定模式。

      语法:SELECT  COLUMN_NAME  FROM  TABLE_NAME  WHERE  COLUMN_NAME  LIKE  PATTERN;

    现在我们创建一个表

    mysql> SELECT * FROM information;
    +------+----------+-----------------+-----------+
    | id   | name     | address         | city      |
    +------+----------+-----------------+-----------+
    | 1001 | xiaoming | NiuJin          | England   |
    | 1002 | xiaochen | Oxford street   | New York  |
    | 1003 | xiaoming | chaoyang street | Beijing   |
    | 1004 | xiaohua  | haha street     | Zhengzhou |
    +------+----------+-----------------+-----------+
    4 rows in set (0.00 sec)

    1、找出以“E”开头的城市的个人信息

    mysql> SELECT * FROM information WHERE city LIKE 'E%';
    +------+----------+---------+---------+
    | id   | name     | address | city    |
    +------+----------+---------+---------+
    | 1001 | xiaoming | NiuJin  | England |
    +------+----------+---------+---------+
    1 row in set (0.00 sec)

    2、找出包含“ch”子串的姓名的个人信息

    mysql> SELECT * FROM information WHERE name LIKE '%ch%';
    +------+----------+---------------+----------+
    | id   | name     | address       | city     |
    +------+----------+---------------+----------+
    | 1002 | xiaochen | Oxford street | New York |
    +------+----------+---------------+----------+
    1 row in set (0.00 sec)

    3、找出不包含“ch”子串的姓名的个人信息

    mysql> SELECT * FROM information WHERE name NOT LIKE '%ch%';
    +------+----------+-----------------+-----------+
    | id   | name     | address         | city      |
    +------+----------+-----------------+-----------+
    | 1001 | xiaoming | NiuJin          | England   |
    | 1003 | xiaoming | chaoyang street | Beijing   |
    | 1004 | xiaohua  | haha street     | Zhengzhou |
    +------+----------+-----------------+-----------+
    3 rows in set (0.00 sec)
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  • 原文地址:https://www.cnblogs.com/FengGeBlog/p/9784740.html
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