How to order siblings in oracle hierarchy queries?
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How toimport .dmp file in lower version of oracle from higher version ?
I have a Employee table with columns ename,eid,salary,deptno. How to retrieve sum of salary for each deptno?
Can I create table without primary key?
What is difference sql and mysql?
what are the join types in tsql? : Transact sql
What is the use of desc in sql?
What is the limitation on the block size of pl/sql?
Is sql harder than python?
What is difference between pl and sql?
How do you optimize a query?
What is differance unique key and primary key.
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.