从多列mysql中选择值

Question

On my site a user enters an account number and I have a script to show the business name belonging to that account number, however the account number could be in 2 columns.

I have the below code to search 1 of the columns (personID);

sql="SELECT * FROM member WHERE personID = '".$q."'";

How do I edit this code to search 2 columns (personID & another column) for the account number?

Answer 1

I believe the SQL OR is what you're looking for. Might be worth taking a look here http://www.w3schools.com/sql/sql_and_or.asp

sql="SELECT * FROM member WHERE personID = '".$q."' OR othercolumn = '".$q."'";

Answer 2

使用或：

sql="SELECT * FROM member WHERE personID = '".$q."' OR anotherColumn = '".$q."'";

Answer 3

You can do this with in :

sql="SELECT * FROM member WHERE '".$q."' IN (personID, othercol)"

The advantage of in is that the parameter is only mentioned once. This makes it easier to use proper parameters rather than string substitution -- a much better approach to generating SQL.