What is union?
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How can I delete duplicate rows?
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 right join sql?
What is the difference between subquery and correlated query?
What is the difference between local and global temporary table?
need to split a string into separate values. eg. col1 col2 ---------- 100 - 'a,b,c' 200 - 'a,x,d,e' 300 - 'c' result: value count ------------- a - 2 b - 1 c - 2 etc.
how to create user in sql and how to set password for that?
How do you write an index?
What are the benefits of pl sql?
What is lookup table in sql?
What are inner outer left and right joins in sql?
Is it possible to use Transaction control Statements such a ROLLBACK or COMMIT in Database Trigger ? Why ?
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