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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 13207

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 7453

how will be date change into string

 4 4370

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 10750

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

iGate,

2 5640

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 10913

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

 3 4674

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

 3 5145

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

 2 4538

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 3845

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

Zensar,

1 4478

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.

 1483

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 2116

We have a CURSOR then we need BULK COLLECT?

 1 2738

what is the main difference between join and subqurey?

Oracle,

3 5986

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Un-Answered Questions { SQL PLSQL }

How do I find duplicates in a single column in sql?

365

Write a sql query to convert all character to uppercase after hypen.

818

What is view explain with example?

370

What is Difference Between Unique and Primary Key Constraints?

414

Explain what is sql?

444




What is indexing oracle sql?

403

how to check server status with 'mysqladmin'? : Sql dba

416

discuss about myisam key cache. : Sql dba

421

Why do we use sql constraints?

461

Will truncate release space?

372

What are few of the schema objects that are created using PL/SQL?

415

What is a unique key?

427

What is synonyms?

421

Why do we use triggers?

373

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

353

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