How many disk partitions should I have?

0 Answers  

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I have 2 Databases. How can create a table in particular database? How can i know the list of tables presented each database?( in oracle 10g)

5 Answers   Relq,

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What is synonyms?

0 Answers  

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What is $$ in sql?

0 Answers  

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What is primary key secondary key alternate key candidate key?

0 Answers  

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Explain Connect by Prior?

2 Answers  

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Suppose I have to create a view on a table, that is not yet been created by DBA. I khow the table structure. Is it possible to create the view before DBA creates this table? If yes then how? Is it possible to create synonym in this way?

4 Answers   IBM, Metric Stream,

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In a distributed database system, can we execute two queries simultaneously?

0 Answers  

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Explain the two type of Cursors ?

8 Answers   Hi Caliber IT,

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What do you mean by query optimization?

0 Answers  

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What are the built in functions of sql?

0 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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