Hi Database masters,
I am new to database, I have a question.
I have 7 tables and I am taking one ore more columns from each table.
As I have 7 tables I have given six joins and I am getting large number of records.
Can anyone please tell me?
--> how to identify given joins are correct
---> how to check data getting for the query is correct or not
---> can anyone suggest to me some books particularly on joins and techniques?