Re: A quick pl/sql datatypes question

>From a pure performance direction,
pls_integer or binary_integer is probably the fastest.

If you declare a variable to be of

    table_name.column_name%type
there are implicit constraints on the
variable and any pl/sql assignments
(in particular arithmetic operations)
have to check that the result matches
those constraints. At one time I believe this meant using a temporary variable
to hold a result, then copying the result if the constraint was matched.

Having said that, you could try a few simple tests to find out that the differences (in new releases) are incredibly small.

Jonathan Lewis

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-----Original Message-----
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: 27 August 2001 17:13

|Dear gurus !
|What is better performance-wise - to declare a variable inside a
pl/sql
|block (or a trigger) as integer (number , Pls_integer etc..) or as
|mytable.mycolumn%TYPE .
|Again , i'm concerned ONLY about performance in this question.
|
|Thanks a lot.
|
|DBAndrey
|
|* 03-9254520
|* 053-464562
|* mailto:andreyb_at_elrontelesoft.com

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Author: Jonathan Lewis
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