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SQL PLSQL Interview Questions
Questions Answers Views Company eMail

how to find 5th row ?

 10 14540

how to retrieve last tree records from table? select *from emp where rownum > (select count(*)-3 from emp); i am using this query to get last three records from table but its not giving any output, so please tell me what is the error in this query.

 16 19617

how do you restrict number of rows for a particular value in a column.For example:there is a table called fruits,having apples,bananas ,papayas.I dont want to have more than 100 apples in that table ,so how can u restrict number of rows for apple to hundred?

 6 9584

If a procedure within a package is invalidated whether the entire package will be invalid and has to be recompiled again?

IBM, TCS,

2 7800

write a query find which rows of a table is updated on 2 days before?

TCS,

3 7825

how to give permission to users that users can update/insert/delete on a row of table on timeing 10am to 6pm only?

TCS,

4 10574

SELECT ROUND(TRUNC(MOD(1600,10),-1),2) FROM dual;

 10 73950

How can I create a table from another table without copying any values from the old table?

 8 10684

in table there r so many rows write a query which two rows r updated last two day befor?

Exilant,

3 8902

How to remove duplicate rows from a table?.

 3 6760

There is a table, In one column it has implemented a index, but the index is disturbed by the regular dml statements.. but still we need to keep the index. how it is possible?

Cognizant,

1 5705

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?

IBM, Metric Stream,

4 11111

I have one table,in that table (1)i have java1.1 version books are 2 and java1.5 version books are 4. (2).Net2.0 books are 3, .Net3.5 books are 2 (3)ABC1.6 books are 4, ABC2.0 books are 3. Now i want output is like Book Count Java 6 .Net 5 ABC 7 For this i need sql query, please help me if anyone how to get this result. Thanks, Seenu

Adea,

4 5388

what is data integrity

Fidelity, TCS,

3 11034

what is sql optimization

Fidelity,

1 8050

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Un-Answered Questions { SQL PLSQL }

Can function return multiple values in sql?

516

What trigger means?

556

What is the difference between microsoft access and sql server?

518

Why do we use subquery?

478

What is lexical units in pl sql?

561




Can we call procedure in select statement?

510

Explian rowid, rownum?

554

What does (*) mean in sql?

521

What is Histogram?

1093

Are dml statements autocommit?

542

What are sql objects?

530

What does fetching a cursor do?

610

What are sql triggers used for?

503

How can you know that statistics should be updated?

591

Does asenumerable execute the query?

590

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