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SQL PLSQL Interview Questions
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How can we Get the Updated Rows? ie, There is 100s of Rows i updated the Rows who have salary 5000. then i want to select the Updated Rows. How can we achieve it?

Fidelity, KCP,

4 14330

IN A TABLE HAVE ONE COLUMN PRIMARY KEY..IT WILL NOT ALLOWS NULL VALUES AND DUPLICATE VALUES..INSTEAD OF PRIMARY KEY WHY CANT WE USE UNIQUE AND NOT NULL.THESE TWO ALSO DOESNT ACCEPT NULL VALUES IN NOT NULL AND UNIQUE DOESNT ACCEPT DUPLICATE VALUES? SO WHAT IS THE DIFEERENCE BETWEEN(UNIQUE,NOT NULL) AND PRIMARY KEY??????

rsystems,

8 8292

how will be date change into string

 4 4924

i have a table with fields(id,name,accnt_type)and in account type are FD,SAVING,RD. Write a query to get How many number of People are in each type of Account?

Fidelity, IBM,

6 11873

I need to write a simple query,which one is better select statement or stored procedure?and why?

iGate,

2 6021

how can we write a column values horizontal by using sql stmt; ex: select name from table_name;(actual output) a b c d require output is a b c d

Honeywell, Interact,

5 11626

how will you find out the last three records in a table with n no of records and delete them

 3 5030

i have a word ***********hello********world******. I require a o/p **********hello world**********, Need to delete the middle stars.

 3 5524

If we have n no of columns in a table, can we add new column in that table with not null constraint?

 2 4845

in sql table following column r there i want find 1st paid ,2nd paid,3rd paid date for same |service_type|date |vehicle_no| |------------|------|_---------| |paid |23 jan|MH12H2007 | | | | | |paid |26 feb|MH12H2007 | | | | | | | | | |paid |28 mar|MH12H2007 | i want o/p like below vehicle no| 1st paid date | 2nd paid date|3rd paid |latest paid date| pls help me out

4 4404

pl/sql testing means what ...... explain process how to find pl/sql bugs

Zensar,

1 4825

in oracle 10g sw after compiling procedure how to pass parameter values ,if we (v_empid out number)how to give empid after successful compilation program.This site exact suitable for 10g with respect to question & answer same format , im trying sql browser & sql command prompt using exec procedure name & respective parameters.

 1641

in sql table follw columns r their vehicle_no|servicetype|date|location| 1234 |1FS |1-JAN|PUNE| 4561 |2FS |5-JAN|PUNE| 1234 |PS |7-JAN|PUNE| 1234 |PS |15-JAN|MUMB| i want o/p below vehicleno|1fs|1fsdate|1fslocation|1ps|1PSDATE|1PSLOC|2PS|2PS DATE|2PSLOCA e.g 1234|1FS|1JAN|PUNE|1PS|7JAN|PUNE|2PS|15JAN|MUMBAI PLS help me out to execute using sql query

 1 2404

We have a CURSOR then we need BULK COLLECT?

 1 2967

what is the main difference between join and subqurey?

Oracle,

3 6450

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Un-Answered Questions { SQL PLSQL }

If the application is running very slow? At what points you need to go about the database in order to improve the performance?

561

What is tuple in sql?

539

discuss about myisam key cache. : Sql dba

561

What are the types of join in sql?

514

How to Execute a Package in PL/SQL.?

576




How can I make sql query run faster?

556

how would you write a query to select all teams that won either 2, 4, 6 or 8 games? : Sql dba

766

What is right join sql?

530

How do you write a subquery?

517

What is an exception in pl/sql?

541

What is a scalar value in sql?

576

Why does sql need a server?

560

Can a select statement fire a trigger?

653

What is parallel hint?

744

What are the different dcl commands in sql?

556

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