What does select top 1 do in sql?

0 Answers  

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Dear All, Question for this Week Find out possible error(s) (either at compile time or at runtime) in the following PL/SQL block. State the reason(s) and correct the errors. Declare Cursor C1 is select ename, sal, comm from emp; Begin For i in C1 Loop If i.comm between 299 and 999 then Dbms_output.put_line(i.Ename || ‘ ** Good Commission’); Elsif i.comm > 999 then Dbms_output.put_line(i.Empno || ‘ ** Very Good Commission’); close C1; Else Dbms_output.put_line(i.Ename || ‘ ** ’ ||nvl(i.comm,‘O’)); End if; End Loop; End;

7 Answers   Accenture,

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Difference between SUBSTR and INSTR?

3 Answers  

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How do you handle exceptions. Give the syntax for it?

1 Answers   BCL, Microsoft,

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Why sql query is slow?

0 Answers  

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Explain about various levels of constraint.

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Why are aggregate functions called so?

0 Answers  

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what is the difference between a web-garden and a web-farm? : Sql dba

0 Answers  

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display null value rows with out using null function?

8 Answers   Infosys,

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What are sql functions? Describe in brief different types of sql functions?

0 Answers  

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Why query optimization is needed?

0 Answers  

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what are the different index configurations a table can have? : Sql dba

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