SQL add tablename as field

Question

I have seen this done before but I can't remember where I saw it.

What I need to do is have the table name as a field in a query.

Say I have a table called users, how would I add the table name 'users' as a column.

Like:

 SELECT username, password, **table** as mytable FROM users

Answer 1

看起来很明显，但是您是否考虑了以下问题？

SELECT username, password, 'users' as mytable FROM users