; 2011/12/04 20:25 +0100, Rafael Valenzuela
In one query, I am comparing a string with a 'like=%patron%', but is very
slow and expensive .What is the best way to compare a string? like or
regular expression?
The data base is too big table 1TB, any idea?
Any decent implementation of like
For the best chance to have a efficient query you would need to loose the
leading % if possible.
If you could then the query can optimize using a index.
On Sun, Dec 4, 2011 at 2:50 PM, Reindl Harald h.rei...@thelounge.netwrote:
you THINK the engine is? WTF?
fulltext if you need
Hi Reindl,
Thanks for your quick answer, but i think the engine is MySAM but I'm not
sure, What type of index recomendais me, unique, full-text, etc..?
Thanks a lot
2011/12/4 Reindl Harald h.rei...@thelounge.net
Am 04.12.2011 20:25, schrieb Rafael Valenzuela:
Hi all,
In one query, I am
you THINK the engine is? WTF?
fulltext if you need fulltext-search
please read the manuals i linked!
Am 04.12.2011 21:20, schrieb Rafael Valenzuela:
Hi Reindl,
Thanks for your quick answer, but i think the engine is MySAM but I'm not
sure, What type of index recomendais me, unique,
Rafael,
Without more details it is hard how you can optimize a query.
1. even though database 1TB, what about the table on which your running
this query? Do you have any index on the column? How may chars long is the
column? etc.
2. Run the explain and see what is the optimizer is telling -
