How many OR, AND in a query?
Hi, How many OR or AND can I put in a select query statement? ex: WHERE mycolumn = 1 OR mycolumn = 3 OR mycolumn = 23 etc . . . A thousand? How would that affect the database execution time? - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: How many OR, AND in a query?
You might want to try: WHERE mycolumn in (1, 3, 23, ...) Or even better, put your thousand records into a temporary table and then just do a join. --jfarr - Original Message - From: Mysql List [EMAIL PROTECTED] To: mysql [EMAIL PROTECTED] Sent: Wednesday, September 26, 2001 12:06 PM Subject: How many OR, AND in a query? Hi, How many OR or AND can I put in a select query statement? ex: WHERE mycolumn = 1 OR mycolumn = 3 OR mycolumn = 23 etc . . . A thousand? How would that affect the database execution time? - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: How many OR, AND in a query?
If you use just 1 OR you will force a table scan and slow everything down ? - Original Message - From: Mysql List [EMAIL PROTECTED] To: mysql [EMAIL PROTECTED] Sent: 26 September 2001 20:06 Subject: How many OR, AND in a query? Hi, How many OR or AND can I put in a select query statement? ex: WHERE mycolumn = 1 OR mycolumn = 3 OR mycolumn = 23 etc . . . A thousand? How would that affect the database execution time? - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: How many OR, AND in a query?
Well, a column can't be one value AND another value. Mysql List wrote: in() is usefull for OR ing, but is there a way to do this AND ing? You might want to try: WHERE mycolumn in (1, 3, 23, ...) Or even better, put your thousand records into a temporary table and then just do a join. --jfarr - Original Message - From: Mysql List [EMAIL PROTECTED] To: mysql [EMAIL PROTECTED] Sent: Wednesday, September 26, 2001 12:06 PM Subject: How many OR, AND in a query? Hi, How many OR or AND can I put in a select query statement? ex: WHERE mycolumn = 1 OR mycolumn = 3 OR mycolumn = 23 etc . . . A thousand? How would that affect the database execution time? - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php -- Gerald L. Clark [EMAIL PROTECTED] - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: How many OR, AND in a query?
in() is usefull for OR ing, but is there a way to do this AND ing? You might want to try: WHERE mycolumn in (1, 3, 23, ...) Or even better, put your thousand records into a temporary table and then just do a join. --jfarr - Original Message - From: Mysql List [EMAIL PROTECTED] To: mysql [EMAIL PROTECTED] Sent: Wednesday, September 26, 2001 12:06 PM Subject: How many OR, AND in a query? Hi, How many OR or AND can I put in a select query statement? ex: WHERE mycolumn = 1 OR mycolumn = 3 OR mycolumn = 23 etc . . . A thousand? How would that affect the database execution time? - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: How many OR, AND in a query?
Gerald Clark wrote: You might want to try: WHERE mycolumn in (1, 3, 23, ...) Or even better, put your thousand records into a temporary table and then just do a join. --jfarr I have yet to have a query that is to long when talking to MySQL via DBD, however, I believe that ODBC has some limitations either compiled in or set at run/query time. --Bill - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
