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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 5867

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 2668

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 2484

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 3189

difference between SQL and C

Indus Software Technologies,

1 2690

Why fastload support to empty table?

CTS,

1288

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

CTS, HSBC,

1360

how to overcome kernel isssues

Fortune,

1167

how to restore particular schema from rman full backup?

HCL,

1294

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 2410

what is logical system in sap basis

 1124

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

 1273

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

Access Info,

1083

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 2513

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

Flipkart,

4 5942

Un-Answered Questions { Databases }

How to list all user defined functions in the current database?

510

what is the diffrence between core dba and apps dba?

2079

What's new in sql management studio for sql server? : sql server management studio

572

What is sql or structured query language?

671

Is record in oracle pl sql?

523




Does mongodb have tables?

1

What do you mean by tablesample?

630

How to rename a tablespace in oracle?

609

What is package in pl sql with an examples?

538

When was mongodb founded and why it is called mongodb?

1

What are the different methods available under sqlcommand class to access the data?

677

How to update values in a table in oracle?

564

What is the default port of mysql server?

501

What operating systems are supported by oracle sql developer?

511

How does SSIS(Sql Server Integration Services) deffer from DTS(Data Transformation Services)?

588

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