I am creating an index on Emp table Empno column,if u using
this indexed column in ur SELECT stmt. where clause,then how
do u know that yr index will be working or nor?
Thanks Advance...
Answer Posted / manoranjan sethy
by using SET AUTOTRACE ON EXPLAIN tool you can came to know weather such index is working or not.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How do I get sql certification?
What is the difference between sql and mysql?
What is synchronized subquery?
Is record in pl sql?
Are stored procedures faster than dynamic sql?
How to run pl/sql statements in sql*plus?
Why query optimization is needed?
What is bind variable in pl sql?
Can we create view in stored procedure?
What do you know by pl/sql cursors?
what is the use of friend function? : Sql dba
What is a crud api?
explain the delete statements in sql
what is the difference between rownum pseudo column and row_number() function? : Sql dba
what are the differences between require and include, include_once and require_once? : Sql dba