Re: Function In Select Statment
When posing a question to the list, there are a number of pieces of information that are required: The OS platform and version The Oracle version Other things that are relevant, For instance, what does the function do? If it reads 10 million rows from a table, I would expect it to be slow. If it's on a version 7 database, there's nothing you can do to make it fast, except don't use it. Jared Hamid Alavi <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 01/29/02 08:05 AM Please respond to ORACLE-L To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> cc: Subject:Function In Select Statment Hi List, One of our developer using function in his select statment but the problem is when he is using order by one of the function results column the query is very slow, Is there any way to use hint for function or some thing to make quesry faster. Thanks in advance Hamid Alavi Office 818 737-0526 Cell818 402-1987 The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contain information that is PRIVILEGED, CONFIDENTIAL and exempt from disclosure under applicable law. If you have received this message in error, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hamid Alavi INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Function In Select Statment
For Oracle 8i use functiion based index. Thanks, Ashoke >>> [EMAIL PROTECTED] 01/29/02 10:05AM >>> Hi List, One of our developer using function in his select statment but the problem is when he is using order by one of the function results column the query is very slow, Is there any way to use hint for function or some thing to make quesry faster. Thanks in advance Hamid Alavi Office 818 737-0526 Cell818 402-1987 The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contain information that is PRIVILEGED, CONFIDENTIAL and exempt from disclosure under applicable law. If you have received this message in error, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hamid Alavi INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ashoke Mandal INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: Function In Select Statment
That may indeed help, if you're very lucky. However forcing it to use that index could also result in an inefficient query path. Another possibility, also with drawbacks, is to have a materialized view which contains the function results as a column of the view. Ian MacGregor Stanford Linear Acclerator Center [EMAIL PROTECTED] -Original Message- From: Ron Rogers [mailto:[EMAIL PROTECTED]] Sent: Tuesday, January 29, 2002 8:36 AM To: Multiple recipients of list ORACLE-L Hamid, Why not create a function based index on the column that is being and the data returned will be faster. I do not know if it will help the sort for the order by but the data returned will be available faster. What does your sort area look like? Is it to small to handle the sort and paging out to disk? ROR mª¿ªm >>> [EMAIL PROTECTED] 01/29/02 11:05AM >>> Hi List, One of our developer using function in his select statment but the problem is when he is using order by one of the function results column the query is very slow, Is there any way to use hint for function or some thing to make quesry faster. Thanks in advance Hamid Alavi Office 818 737-0526 Cell818 402-1987 The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contReceived: from CONNECT-MTA by galotterain information that is PRIVILEGED, CONFIDENTIAL and exempt from disclosure under applicable law. If you have received this message in error, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hamid Alavi INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ron Rogers INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: MacGregor, Ian A. INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
Re: Function In Select Statment
Hamid, Why not create a function based index on the column that is being and the data returned will be faster. I do not know if it will help the sort for the order by but the data returned will be available faster. What does your sort area look like? Is it to small to handle the sort and paging out to disk? ROR mª¿ªm >>> [EMAIL PROTECTED] 01/29/02 11:05AM >>> Hi List, One of our developer using function in his select statment but the problem is when he is using order by one of the function results column the query is very slow, Is there any way to use hint for function or some thing to make quesry faster. Thanks in advance Hamid Alavi Office 818 737-0526 Cell818 402-1987 The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contReceived: from CONNECT-MTA by galotterain information that is PRIVILEGED, CONFIDENTIAL and exempt from disclosure under applicable law. If you have received this message in error, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system. -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Hamid Alavi INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Ron Rogers INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
