SQL PLSQL Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

SQL PLSQL Interview Questions

Questions Answers Views Company eMail

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 15964

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 10735

how will be date change into string

4 6521

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 14027

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

iGate,

2 7118

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 13766

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

3 6230

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

3 6943

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

2 5983

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 6030

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

Zensar,

1 5680

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.

2135

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 3292

We have a CURSOR then we need BULK COLLECT?

1 3704

what is the main difference between join and subqurey?

Oracle,

3 7770

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Un-Answered Questions { SQL PLSQL }

What is primary key and unique key?

1162

What is the usage of sql functions?

1202

What is trigger point?

1056

what is the difference between nested subquery and correlated subquery?

1091

What do you understand by pl/sql records?

1062

How many disk partitions should I have?

1040

What is pl sql code?

1106

How can check sql version from command line?

1135

What do you know by pl/sql cursors?

1168

What is the difference between nvl function, ifnull function, and isnull function?

1154

what is the command line end user interface - mysql? : Sql dba

1028

Explain architecture of sql server notification services?

1107

What are tables and fields?

1087

What does pl sql stand for?

1156

what is normalization? : Sql dba

1137

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