25.01.2013, 21:39
Uhm, a .sql file is usually just a database dump. This is generated by the application.
If you're talking about the SQL as a whole, then there are a few key concepts you need to understand. This includes knowing what a database is, what a table is, what records are and what fields are. Then there are the different data types, relations, keys, etc. Then you will need to learn how to construct the four most common types of queries; select, insert, update and delete.
If you're talking about the SQL as a whole, then there are a few key concepts you need to understand. This includes knowing what a database is, what a table is, what records are and what fields are. Then there are the different data types, relations, keys, etc. Then you will need to learn how to construct the four most common types of queries; select, insert, update and delete.