What is coalesce sql?
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define primary key & secondary key?
Can we update views in sql?
Write a procedure to return the month and the number of developers joined in each month (cursor )
How can we avoid duplicating records in a query?
Which join is like an inner join?
what is the different between unique+not null & primary key,
Why indexing is needed?
What does stand for in sql?
What is sql rowcount?
What are variables in pl sql?
what is log shipping? : Sql dba
How do you declare a variable in pl sql?