what is 'trigger' in sql? : Sql dba

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What are triggers 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 ?

3 Answers   Oracle,

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What is range partitioning?

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How to maintain the history of code changes of pl/sql?

3 Answers  

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how are mysql timestamps seen to a user? : Sql dba

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Is grant a ddl statement?

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What is a constraint. Types of constraints ?

5 Answers   Accenture, BirlaSoft,

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How does a self join work?

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Explain the components of sql?

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What are the types of SQL Statement?

3 Answers  

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How run sql*plus commands that are stored in a local file?

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