I have few doubts. I have heard from some of my colleagues that, if we have created composite Nonclustured index on following table order of all the filters should be in order of Indexed column then F
SELECT T1.name AS hotel, T2.name AS city FROM (SELECT * FROM hotel WHERE name LIKE \'$term1%\') T1, (SELECT *
Can anyone suggest how I can improve my query, its used for a site map and theres 8开发者_C百科0000 pages, hence the limit.
In a typical many-many arrangement like this... MoviesActorsMovies_Actors ------------------------- movie_IDactor_IDFK_movie_ID
I\'m puzzled why one of my queries is slow, I have indexes and I\'ve just created a new one. Yet its still been quite slow and appears in my slow log.
We\'ve developed a system with a search screen that looks a little something like this: (source: nsourceservices.com)
I have a query in MySql (5.1) InnoDB that searches in a table with parts. The table with parts contains about 500 000 rows. The search also joins two other tables tblcategory and tblheadcategory. I ha
I\'m trying to improve my query, I\'m doing a count of all the records which are in a specific category, I\'m also doing a sum to count how many pages each category will need to show all of the record
My query has a join, and it looks like it\'s using two indexes which makes it more complicated. I\'m not sure if I can improve on this, but I thought I\'d ask.
In literature SQL query efficiency is often measured in \"queries pre se开发者_如何学运维cond\" (QPS). How those measures are made, considering that I have a database with production data at my hands?
加载中,请稍侯......