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Oracle SQL PLSQL Interview Questions
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there are 2 variables called x and y ,x contains 1,2 and y contains 3,4 we have to swap the values from x to y and y to x with out using dummy variables and it can be done only by using a single statement ? how?

 12 18071

Differences between UNIQUE and DISTINCT in select statements

 26 131486

What are the attributes of SQL*PLUS ?

 2 9875

Create table emp (id number(9), name varchar2(20),salary number(9,2)); The table has 100 records after table created.Now i nee to change id's Datatype is to be Varchar2(15). now Alter table emp modify(id varchar2(15),name varchar2(20), salary number(9,2)); Whether it will work or returns error? post answer with explanation.

 13 20753

i want to display 1 to 10 numbers using one select statement.

 18 45273

why use cursors?

 5 11937

how to remove records from table? no name 1 a 2 b 1 a 2 b 3 c

 8 12819

What is the difference between CHAR and VARCHAR2? If VARCHAR2 serves the uses of CHAR why CHAR is still used and not been discarded yet?

 9 17147

How can i insert data inro a table with 3 columns using FORALL?

 2 10419

what is autonomouse transaction?

 3 7596

what are pl/sql collections?

 4 31339

How to create a view on a table which does not exists

 4 20313

how to write utl file pkg in SQL

 1 6031

wt is the diff b/w greast and max ,least and min? wt is the diff b/w case and decod?

 4 19118

what is the difference difference between procedure and packages

 2 9761

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Oracle SQL PLSQL Interview Questions


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