What is clustered and nonclustered index in sql?
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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.
What is before trigger?
what is data manipulation language? : Sql dba
How is indexing done in search engines?
What is scope of pl sql developer in future?
What type of join is sql join?
Is pl sql still used?
Why do we use subquery?
suppose u hav 1 book with set...page 1-100 n 101 -200 now print page from 2-100 n 102 -200... how we will do..?
Can we insert data in view?
What SQL keyword must immediately follow the UNION ALL statement? 1. SELECT 2. INTO 3. ORDER 4. WHERE 5. JOIN
Is postgresql a server?
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