Re: Really strange index/speed issues

2007-09-11 Thread Chris Hemmings
Baron Schwartz wrote: Chris Hemmings wrote: Chris Hemmings wrote: Baron Schwartz wrote: Hi Chris, Chris Hemmings wrote: Dan Buettner wrote: Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may alread

Re: Really strange index/speed issues

2007-09-11 Thread Michael Dykman
The results of an EXPLAIN have a lot to do with the data which is actually on the system. In this case, it seems to hinge on the distribution of your 'price' attribute.. how many records on your system? and what is the general distribution of the price attribute? (how many distinct values) On

Re: Really strange index/speed issues

2007-09-11 Thread Baron Schwartz
Chris Hemmings wrote: Chris Hemmings wrote: Baron Schwartz wrote: Hi Chris, Chris Hemmings wrote: Dan Buettner wrote: Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may already know that, but thoug

Re: Really strange index/speed issues

2007-09-11 Thread Chris Hemmings
Chris Hemmings wrote: Baron Schwartz wrote: Hi Chris, Chris Hemmings wrote: Dan Buettner wrote: Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may already know that, but thought I'd mention it. Se

Re: Really strange index/speed issues

2007-09-10 Thread Chris Hemmings
Baron Schwartz wrote: Hi Chris, Chris Hemmings wrote: Dan Buettner wrote: Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may already know that, but thought I'd mention it. Second, my theory on why q

Re: Really strange index/speed issues

2007-09-10 Thread Baron Schwartz
Hi Chris, Chris Hemmings wrote: Dan Buettner wrote: Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may already know that, but thought I'd mention it. Second, my theory on why query #1 is faster - if

Re: Really strange index/speed issues

2007-09-10 Thread Chris Hemmings
Dan Buettner wrote: Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may already know that, but thought I'd mention it. Second, my theory on why query #1 is faster - if all your prices range from 1 up, and

Re: Really strange index/speed issues

2007-09-10 Thread Dan Buettner
Chris, a couple of thoughts - First, your index on the section is doing you no good (at this time) since all the values are the same. You may already know that, but thought I'd mention it. Second, my theory on why query #1 is faster - if all your prices range from 1 up, and you're querying for p

Re: Really strange index/speed issues

2007-09-10 Thread Chris Hemmings
Jeremy Cole wrote: Hi Chris, Chris Hemmings wrote: Hello, I have a table, currently holding 128,978 rows... In this table, I have a section column (int) and a price column (int). Every row has a section of 1 currently, every row has a price, ranging from 1 to 10,000. I have an index on

Re: Really strange index/speed issues

2007-09-10 Thread Jeremy Cole
Hi Chris, Chris Hemmings wrote: Hello, I have a table, currently holding 128,978 rows... In this table, I have a section column (int) and a price column (int). Every row has a section of 1 currently, every row has a price, ranging from 1 to 10,000. I have an index on both columns separate