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

SQL PLSQL Interview Questions

Questions Answers Views Company eMail

What is trigger in sql?

1154

How do sql triggers work?

1088

What type of join is sql join?

1020

What is the use of count (*) in sql?

1113

What is difference between rank () row_number () and dense_rank () in sql?

1157

What is sql rowcount?

1066

What is equi join in sql?

1117

What is the difference between distinct and unique in sql?

988

What is group by in sql?

1124

Why we use triggers in mysql?

1035

What is sql procedures and functions?

1071

Why trigger is used in sql?

1015

What is rownum in sql?

1091

Why self join is used in sql?

1028

What is the difference between count 1 and count (*) in a sql query?

1050

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Un-Answered Questions { SQL PLSQL }

how to start mysql server? : Sql dba

1233

What are the datatypes available in pl/sql ?

1145

Do we need to rebuild index after truncate?

1095

What is a database? Explain

1174

What is the use of sqlerrd 3?

993

What is the difference between syntax error and runtime error?

1178

What is varchar used for?

1133

What is difference between joins and union?

1191

What is bind reference and how can it be created?

1066

What do you mean by query optimization?

1047

Is a foreign key always unique?

980

What is the purpose of normalization?

1084

Why do we need cursors in pl sql?

1149

Is mariadb nosql?

1088

How does left join work in sql?

1036

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