我们可以在将数据从 MySQL 表导出到文件时使用 WHERE 子句中的条件。可以通过示例来理解 -
示例
假设我们从表“Student_info”中有以下数据 -
mysql> Select * from Student_info;
+------+---------+------------+------------+
| id | Name | Address | Subject |
+------+---------+------------+------------+
| 101 | YashPal | Amritsar | History |
| 105 | Gaurav | Chandigarh | Literature |
| 125 | Raman | Shimla | Computers |
| 130 | Ram | Jhansi | Computers |
| 132 | Shyam | Chandigarh | Economics |
| 133 | Mohan | Delhi | Computers |
+------+---------+------------+------------+
6 rows in set (0.07 sec)
假设我们要导出 id 值大于 120 的记录,那么以下查询会将此类记录从“Student_info”表导出到“Stuednt4.CSV”文件中 -
mysql> Select * from student_info WHERE id > 120 into outfile 'C:/mysql/bin/mysql-files/student4.csv' Fields terminated by ',';
Query OK, 4 rows affected (0.16 sec)
上面的查询会将以下值导出到 Student4.CSV 文件中 -
125 Raman Shimla Computers
130 Ram Jhansi Computers
132 Shyam Chandigarh Economics
133 Mohan Delhi Computers