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 15954

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 10712

how will be date change into string

4 6512

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 14021

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

iGate,

2 7110

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 13756

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

3 6224

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

3 6939

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

2 5975

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 6021

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

Zensar,

1 5676

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.

2133

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 3286

We have a CURSOR then we need BULK COLLECT?

1 3700

what is the main difference between join and subqurey?

Oracle,

3 7756

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Un-Answered Questions { SQL PLSQL }

Write the command to remove all players named sachin from the players table.

1221

What is the difference between between and in condition operators?

1063

What are the types of join in sql?

1144

what is the difference between nested subquery and correlated subquery?

1089

Why is a primary key important?

1098

State some properties of relational databases?

1111

Does view store data in sql?

1032

Is oracle and sql same?

1072

What kind of join is join?

1005

What is server name sql?

1197

What is use of term?

1122

Explain the methods used to protect source code of pl/sql.

1068

What are the different dml commands in sql?

1240

What are field types?

1049

Is json a nosql?

1027

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