SQL PLSQL Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

SQL PLSQL Interview Questions

Questions Answers Views Company eMail

Which is faster count (*) or count 1?

1086

Why use subqueries instead of joins?

1133

Which normal form is best?

993

Why are indexes and views important to an organization?

994

Which join is default?

1012

What is before and after trigger?

1007

Can I call a procedure inside a function?

1074

Which is better join or subquery?

1187

What is the difference between instead of trigger and after trigger?

1063

Why we use cross join?

997

Why indexing is needed?

1042

Why is normalization important?

1076

Which is faster subquery or join?

1266

Why do we need unique key in a table?

1002

Which is the correct statement about truncate and delete?

1166

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Un-Answered Questions { SQL PLSQL }

Is inner join faster than left join?

1247

What is record data type?

977

What is a nested table in word?

1003

what are the disadvantages of mysql? : Sql dba

1204

Is pl sql still used?

1016

how to use regular expression in pattern match conditions? : Sql dba

1084

What does the file extension accdb stand for?

1012

What are the subsets of sql?

1192

What is dbo in sql?

1016

How do you bind variables in pl sql?

1156

In pl/sql, what is bulk binding, and when/how would it help performance?

1030

Why use stored procedures?

1138

Explain isolation levels. : Transact sql

1105

what is denormalization. : Sql dba

1159

What is sql*loader and what is it used for? : aql loader

1246

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