sql in子查询如何使用
时间: 2023-04-08 08:01:24 浏览: 159
可以使用IN子查询来筛选出某个字段中包含指定值的记录。具体使用方法如下:
SELECT * FROM table_name WHERE column_name IN (value1, value2, ...);
其中,table_name是要查询的表名,column_name是要筛选的字段名,value1、value2等是要筛选的值。可以使用多个值,用逗号隔开即可。
例如,如果要查询学生表中年龄为18岁或20岁的学生记录,可以使用以下SQL语句:
SELECT * FROM student WHERE age IN (18, 20);
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