问题
Possible Duplicate:
mysql case sensitive query
'm working on an PHP script that checks some values to the ones in the database. So far I thought it worked right, but I found an problem.
The query isn't looking for the specific characters.
So if I use this query:
SELECT *
FROM `facilitydb_login`
WHERE
facilitydb_login.`password` = 'PASS'
I want the result, because the password is PASS. But if you fill in pass (lowercase) the same entry is returned.
How can I make it case sensitive?
回答1:
you should use case sensitive collation, for example
SELECT *
FROM `facilitydb_login`
WHERE facilitydb_login.`password` collate latin1_general_cs = 'PASS'
CS in the name means that it's Case Sensitive
回答2:
you could make the column case sensitive
Assume you are using mysql database
ALTER TABLE facilitydb_login
CHANGE password `password` VARCHAR(100) BINARY NOT NULL;
or If you want to make part of the select statement then
SELECT *
FROM `facilitydb_login`
WHERE BINARY
facilitydb_login.`password` = 'PASS'
来源：https://stackoverflow.com/questions/12973682/case-sensitive-database-query