[Starbish]

It is not necessary to use this to use threaded queries. However, if you don't (or you mix threaded/non-threaded queries), you should see SQL_LockDatabase().

(it's written here)

Does this mean i can connect to database with

SQL_Connect
SQL_ConnectEx
SQL_TConnect
SQL_ConnectCustom
SQL_DefConnect

to use "Threaded Query"?

[hlstriker]

The method you use for getting the database handle doesn't matter, it can be threaded or non-threaded. You can use threaded OR non-threaded queries on the returned handle. You do not want to use both threaded and non-threaded queries on a single handle. If you need to use both threaded and non-threaded queries in your plugin then you will want to create two separate connections (one connection for purely threaded queries and the other for non-threaded queries).

See this post as well:
https://forums.alliedmods.net/showpo...3&postcount=16