Databases Interview Questions
Questions Answers Views Company eMail

how to i write the query 'NISHI' TO N I S H I

Attra, Metric Stream,

4 3715

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 1264

The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ---------- 1 NULL 7 2 4 NULL NULL 5 NULL 3 NULL NULL

TCS,

1 1321




The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ================ 1 NULL 2 NULL 3 4 NULL 5 6 7 NULL NULL O/P C = 2 4 6

TCS,

2 1777

difference between SQL and C

Indus Software Technologies,

1 1529

Why fastload support to empty table?

CTS,

563

Teradata: How can we know the indexed column in a table?

CTS, HSBC,

670

how to overcome kernel isssues

Fortune,

499

how to restore particular schema from rman full backup?

HCL,

693

user says the db performance is slow or yesterday the query runned 1min and today its taking 30 min. how to trouble shot or were to start with?

HCL,

1 1077

what is logical system in sap basis

412

how to solve cardinality in dbms...many to many ralationships

666

HI Friends I m new dev(forms & report). can anyone tell me how we upload a document on form 11g.??

Access Info,

415

how to write a query without using where? Example- select * from employee where empno=10 I need to write this query without where clause.

Alshaya,

1 1112

How to display all Friday's in a year with date?

Flipkart,

3 2634







Un-Answered Questions { Databases }

how to restore files with rman?

1000


CAN AUNIVERSE BE LINKED TO MORE THAN ONE DATASOURCE?

874


Explain the use of table functions.

1027


Is there any way to find out when one specific table/view/M-view is used last time. i.e. when one specific object is used in any SELECT statement.

141


what is the link between suppliers and banks in ap module in oracle apps? And also query?

1279






Can u give the example by taking an unnormalized table and make that 1nf and then 25nf, and then 3 nf?

3578


Suppose i have a table that contains 5 columns like col1,col2...colm5.I want to import only two column through BCP utility.How to do same through BCP in sybase.

1289


how to overcome kernel isssues

499


I creat Credit memo in AR. Now i want revers the Credit Memo.how you can revers that what out any aditional entry.

1160


how to do partition in sqlserver

1344


what are the differences of where and if in SAS?

957


Difference between global and parameter variables?

703


Explain about query and reporting.

1046


What is the DIF format and when we will use in teradata

1277


when we login sql editor using username and password then it says this error "could not resolve service name" then what can we do at client side.( here thing is tnsnames.ora file is ok till yesterday and worked well, but now it giving error.

619