What is group function in sql?
What is sql table?
What is the best free sql database?
what is a sub query?how will you calculate working days in a month using sub query?
What can you do with pl sql?
write a query to find 4th max salary
how to delete duplicate rows from a specified table(only single table) how do you know which join is need to be used
What is sql procedures and functions?
What is delimiter in pl sql?
How do I partition in sql?
What are the types of variable use in pl sql?
what does myisamchk do? : Sql dba
What are all ddl commands?