Explain how you can copy a file to file content and file to pl/sql table in advance pl/sql?
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What is pessimistic concurrency control? : Transact sql
declare l1 number := null; l2 number :=null; begin if l1=l2 then message('equal'); else if l1<>l2 then message('not equal'); else message('else'); end if; end if; end; What will be the output ?
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how to achieve this problem?i am having table with two colums like empno,gender. in gender column, i am having records male,female like that .my final output will be male female 5 6
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