What is a field in a database?
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What is the use of prepared statement?
Why cannot I use bind variables in ddl/scl statements in dynamic sql?
What is full join?
Tell me what a package consists of.
What is meant by user defined function?
What does the sign mean in sql?
what is the difference between a having clause and a where clause? : Sql dba
Write a sql query to get the third highest salary of an employee from employee_table?
What is cascade in sql?
How to get list of all tables from a database?
Do you know the basic structure of PL/SQL?
how to retrieve last tree records from table? select *from emp where rownum > (select count(*)-3 from emp); i am using this query to get last three records from table but its not giving any output, so please tell me what is the error in this query.
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