What is rule base and cost base optimizer?
Answers were Sorted based on User's Feedback
Answer / chandra shekher
Rule based optimiser will optimise the query based on the
rules.
Cost based optimiser will optimise the query based on the
statistics available for the table.
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / chandra bhusan prasad
one is supported in 8i and another in 9i/10g
cost base optimizer display the cost attributes of query
and it is easier.
Is This Answer Correct ? | 1 Yes | 3 No |
How do you retrieve the last N records from a table?
What do you mean by stored procedures?
how to drop an existing table in mysql? : Sql dba
can we delete the trigger in a view? if yes why if not why?
What are sql injection vulnerabilities?
. have a tablle like this: cust acc ----------- a 1 b 2 b 3 c 4 c 5 c 6 I Want below o/p: cust acc --------------- a 1 b 2|3 c 4|5|6 Please any one can you have any ideas share me. I have urgent requirement. CUST ACC a dv b fg b bh c mk c cl c so result:- A B c dv fg mk bh cl so
What are two parts of package ?
Can we call procedure in select statement?
Can we alter stored procedure?
What is bulk collections?
How is a process of pl/sql compiled?
What is a column in a table?