RE: Does the case of an Oracle query statement affect query perfo

[Deshpande, Kirti]

Oracle sees (a) and (b) as two different queries and parses them both. For them to be identical the text must match, including the white spaces.

I suggest a small test under *identical conditions* to see if execution time varies ;)

 

- Kirti

 

-----Original Message-----
From: Shantanu Datta [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 30, 2002 2:58 AM
To: Multiple recipients of list ORACLE-L
Subject: Does the case of an Oracle query statement affect query performance?

Hi,

    Pardon me for such a naive question, coz I am a novice when it comes to Oracle. This is basically got to do with how Oracle parses a query.

 

    Consider the following queries:

 

a)    SELECT column1, column2 FROM table WHERE column0 = 5;

 

b)    SELECT COLUMN1, COLUMN2 FROM TABLE WHERE COLUMN0 =5;

 

    Scenario 1: I use the naming convention a) for ALL my queries

 

    Scenario 2: I use the naming convention b) for ALL my queries

 

    Will there be any difference in the execution time of the same queries in Scenario 1 vs 2?

   

Thanx in advance,

Shantanu.

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