如何从单个查询中获取多个 MySQL 表的输出?
mysqlmysqli database
我们知道，查询可以有多个 MySQL 语句，后跟一个分号。假设我们想从多个表中获取结果，那么请考虑以下示例，通过编写单个查询从"Student_info"和"Student_detail"中获取结果集 −
mysql> Select Name, Address from Student_info; Select Studentid, Address from Student_detail; +---------+------------+ | Name | Address | +---------+------------+ | YashPal | Amritsar | | Gaurav | Chandigarh | | Raman | Shimla | | Ram | Jhansi | | Shyam | Chandigarh | | Mohan | Delhi | | Saurabh | NULL | +---------+------------+ 7 rows in set (0.00 sec) +-----------+------------+ | Studentid | Address | +-----------+------------+ | 100 | Delhi | | 101 | Shimla | | 103 | Jaipur | | 104 | Chandigarh | | 105 | Chandigarh | +-----------+------------+ 5 rows in set (0.00 sec)
在上面的例子中，两个语句被输入在一行上，并以分号分隔，并且我们按顺序得到了输出。
