Answer / Robinder Singh Goyath

"In SQL, there is no 'go back' command as such. However, you can use the command 'GO' to execute a batch of statements at once or move to a new line for writing additional commands."

Can I call a procedure inside a function?

1 Answers  

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Given two tables Student(SID, Name, Course) and Level(SID, level) write the SQL statement to get the name and SID of the student who are taking course = 3 and at freshman level.

9 Answers   Oracle,

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What is clustered index sql?

1 Answers  

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Why is there a need for sqlcode and sqlerrm variables?

1 Answers  

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Under what condition it is possible to have a page level lock and row lock at the same time for a query? : Transact sql

1 Answers  

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What is pl sql block in dbms?

1 Answers  

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define primary key & secondary key?

2 Answers  

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why should required nested tables, Object types, partition tables and varying arrays. what is the difference between these are all. give me example with explanation.

2 Answers  

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how to delete duplicate rows from a specified table(only single table) how do you know which join is need to be used

11 Answers   UST,

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What are the different set operators available in sql?

1 Answers  

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Hi Guys, I have a situation where I need to access the column values from rowtype variable. However, the column names are dynamic. below is sample code: declare Cursor c1 is select * from emp; Cursor c2 is select column_name from xyztable; v_c2 c2%rowtype; v_str varchar2 v_value varchar2(200); begin for rec in c1 loop open c2;---this cursor has column names like EMPLOYEE_ID, FIRST_NAME, LAST_NAME etc. loop fetch c2 into v_c2; exit when c2%notfound; /* now lets say i want to access value of LAST_NAME from cursor c1, so I am writing below code, however it does not work as expected */ v_str:= 'rec.'|| v_c2.column_name; -- this will give me string like "rec.EMPLOYEE_ID" v_value:=v_str; end loop; end loop; end; / Plz help ASAP.Thanks.

2 Answers  

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Explain what is a view?

1 Answers  

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