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SQL PLSQL Interview Questions
Questions Answers Views Company eMail

how to find 5th row ?

 10 11451

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 15794

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 7989

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

IBM, TCS,

2 6595

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

TCS,

3 6305

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 8922

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

 10 38701

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

 8 8547

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

Exilant,

3 7524

How to remove duplicate rows from a table?.

 3 5716

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 4748

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 9424

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 3983

what is data integrity

Fidelity, TCS,

3 8272

what is sql optimization

Fidelity,

1 6307

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Un-Answered Questions { SQL PLSQL }

Can a view be mutating? If yes, then how?

180

how to create a test table in your mysql server? : Sql dba

136

what is a primary key? : Sql dba

142

How do we use distinct statement? What is its use?

159

What is the use of stored procedures?

100




Can you do multiple joins in sql?

114

how to run 'mysql' commands from a batch file? : Sql dba

145

What are pl sql data types?

120

what is the sql query to display current date? : Sql dba

132

What is the left table in sql?

103

Why do we use cursors?

110

Why do we need cursor in pl sql?

147

Suppose a student column has two columns, name and marks. How to get name and marks of the top three students.

142

Why schema is used in sql?

115

What is the mutating table and constraining table?

143

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