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Is sql a backend language?


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More SQL PLSQL Interview Questions

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  


hi,i plan to put experience on PLSQL ,can anyone suggest me for any institutes in bangalore or how to prepare for interviews

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Why do we need databases?

0 Answers  


What is data type in sql?

0 Answers  


Explain select statements in sql?

0 Answers  


what is a cursor

9 Answers   IBM, TCS, Wipro,


Do you understand the meaning of exception handling?

3 Answers  


Explian rowid, rownum? What are the psoducolumns we have?

0 Answers  


What is memory optimized?

0 Answers  


I have following column in the table. col1 1 a b c 2 3 d and I want to display it as num chars 1 a 2 b 3 c 4 d numbers in one column and letters in another column.

1 Answers   IBM, Saama Tech,


Does it possible to pass object (or) table as an argument to a remote procedure?

1 Answers   TCS,


Which sql statement is used to return only different values?

0 Answers  


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