IN 操作符允许您在 WHERE 子句中规定多个值。
SQL IN 语法
SELECT column_name(s) FROM table_name WHERE column_name IN (value1,value2,...);
举例:
选取 name 为 "Jack" 或 "Mary" 的所有网站
SELECT * FROM Websites WHERE name IN ('Jack','Mary');
SELECT column_name(s) FROM table_name WHERE column_name IN (value1,value2,...);
举例:
选取 name 为 "Jack" 或 "Mary" 的所有网站
SELECT * FROM Websites WHERE name IN ('Jack','Mary');