Why function is used in sql?


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More SQL PLSQL Interview Questions

What steps server process has to take to execute an update statement?

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Why cross join is used?

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one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows only how should u write query?

9 Answers   TCS,


What is the maximum size of sqlite database?

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How do you retrieve set of records from database server. {Set max records = 100 & use paging where pager page no or records = 10 & after displaying 100 records again connect to database retrieve next 100 }

2 Answers   DELL,






What is scope and visibility in PL/SQL?

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Which one is better sql or oracle?

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Can ddl statements be used in pl/sql?

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What is the fastest way of accessing a row in a table?

5 Answers   TCS,


What is the difference between rollback and rollback to statements?

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Can you have more than one key in a database?

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What is error ora-12154: tns:could not resolve the connect identifier specified?

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