mysql查询如何区分大小写

使用 binary 可以进行大小写区分

MariaDB [abc]> select * from runoob_tbl where runoob_author='runoob.com';
+-----------+--------------+---------------+-----------------+
| runoob_id | runoob_title | runoob_author | submission_date |
+-----------+--------------+---------------+-----------------+
|         3 | JAVA 教程    | RUNOOB.COM    | 2016-05-06      |
+-----------+--------------+---------------+-----------------+
1 row in set (0.00 sec)

MariaDB [abc]> select * from runoob_tbl where binary runoob_author='runoob.com';
Empty set (0.00 sec)

MariaDB [abc]> select * from runoob_tbl where binary runoob_author='RUNOOB.COM';
+-----------+--------------+---------------+-----------------+
| runoob_id | runoob_title | runoob_author | submission_date |
+-----------+--------------+---------------+-----------------+
|         3 | JAVA 教程    | RUNOOB.COM    | 2016-05-06      |
+-----------+--------------+---------------+-----------------+
1 row in set (0.00 sec)