What are the query optimization techniques?
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What does select count (*) mean in sql?
How many types of keys are there in sql?
consider a table which contain 4 columns,ename,eno,sal and deptno, from this table i want to know ename who having maximum salary in deptno 10 and 20.
What is the use of function in sql?
Explain the rollback statement?
what is a view? : Sql dba
Is record in pl sql?
What are predefined functions in sql?
can i use global variables in stored procedure or function
What does dml mean?
Why triggers are used?
How can I see all tables in sql?
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