What is trigger and how to use it in sql?
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declare lowerl number:= 1; upperl number:= 3; num varchar2(10); begin for i into lowerl..upperl loop num:=num||to_char(lowerl); if i=3 then upperl:=5; end loop; message(num); What will be the output ?
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There is a sequence with min value 100. I want to alter this sequence to min value as 101. If the table has already data in the sequence column as 100,101,102... Is it possible to do so ?
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