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Why do we need a foreign key?
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What is the first action to perform a query? Suppose I have four tables and five joins and my query is getting slow day by day.
one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows in the table permanently and i want output in the above formatow should u write query?
How can we optimize a sql query?
Can We write bulk collect statement in triggers?
Sql technical questions
What is the purpose of a secondary key?
Define sql delete statement.
What are triggers in sql?
Can I call a procedure inside a function?
what is log shipping? : Sql dba
Write a unique difference between a function and a stored procedure.
Does user triggers have entry for trigger with compilation errors?
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