what is unique key constraint? : Sql dba
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using subquery how can i calculate working days in a month?
when is the use of update_statistics command? : Sql dba
What is before trigger?
2. Select A.A from ( select 1 as from dual Union select 1 as from dual)A Full outer join ( select 1 B from dual Union select 2 B from dual)B On A.A=B.B
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what is commit? : Sql dba
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