What is trigger with example?

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Which one is the Best approach to put code, among Triggers and Procedures? Explain?

1 Answers   Sierra Atlantica,

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How the execution will be done in exceptions?

2 Answers  

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is it mandatory to select all the column in a view then what columns should be selected

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What are stuff and replace function?

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what is the output of this query selet * from employee where 1=2 ??

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4. Select sum(A.salary) +sum(B.salary) as TOT_SAL from ( select LEVEL emp_id,level*100 salary,case when mod (level,2)=0then 2 else null end dept_id from dual connect by level<6 )A right outer join (select level emp_id ,level*200 salary ,case when mod (level,3)=0 then 2 else null end dept_id from dual connect by level<6)B On A.dept_id=B.dept_id And A.emp_id=B.emp-id;

1 Answers   Fintellix,

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How to select unique records from a table?

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what is sql? : Sql dba

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Does a user_objects view have an entry for a trigger?

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What does count (*) mean?

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how to dump a table to a file with 'mysqldump'? : Sql dba

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