mysql查询查看慢

Question

Our search is very slow on view. we can't define index on view.. Please help how we can improve this .. Below Query took 33.3993 sec.

SELECT 
     `v_cat_pro`.`product_id`, `v_cat_pro`.`msrp`, 
FROM 
     `v_prod_cat` AS `v_cat_pro`
WHERE 
     (product_status="1" and msrp >0 AND (search_text = 'de') )
ORDER BY 
     `msrp` ASC LIMIT 50

Explain query result

id  select_type     table   type    possible_keys   key     key_len     ref     rows    Extra
1   SIMPLE  cat_product     index   catproducts_product_id,category_product_index   category_product_index  8   NULL    941343  Using index; Using temporary; Using filesort
1   SIMPLE  dept    eq_ref  PRIMARY     PRIMARY     4   newdhf.cat_product.category_id  1   Using where
1   SIMPLE  team    eq_ref  PRIMARY     PRIMARY     4   newdhf.dept.parent_id   1   Using where
1   SIMPLE  league  eq_ref  PRIMARY     PRIMARY     4   newdhf.team.parent_id   1   Using where
1   SIMPLE  product     eq_ref  PRIMARY     PRIMARY     4   newdhf.cat_product.product_id   1   Using where

CREATE ALGORITHM=UNDEFINED VIEW v_prod_cat AS select dept . id AS dept_id , team . short_name AS shortteamname , team . url AS team_url , team . id AS team_id , league . id AS league_id , product . product_id AS product_id , product . product_status AS product_status , product . upload_image_l AS upload_image_l , dept . name AS department , team . name AS team , league . name AS league , product . title AS title , cat_product . product_url AS product_url , product . discount AS discount , product . discount_start_date AS discount_start_date , product . discount_end_date AS discount_end_date , product . extra_discount AS extra_discount , product . extra_discount_start_date AS extra_discount_start_date , product . extra_discount_end_date AS extra_discount_end_date , product . global_alt_tag AS global_alt_tag , product . msrp AS msrp , product . cost AS cost , product . vendor_id AS vendor_id ,if(( cat_product . is_default > 0),1,0) AS is_default ,

concat( league . name ,_utf8' ', team . name ,_utf8' ', dept . name ,_utf8' ',replace(replace(replace(replace( product . title ,'$leaguename', league . name ),'$teamname', team . name ),'$shortteamname', team . short_name ),'$departmentname', dept . name ),' ', product . sku_code ,_utf8' ',replace(replace(replace(replace( product . site_search_keyword ,'$leaguename', league . name ),'$teamname', team . name ),'$shortteamname', team . short_name ),'$departmentname', dept . name )) AS search_text

from (((( categories dept join categories team on((( team . id = dept . parent_id ) and ( team . category_type = _utf8'team')))) join categories league on((( league . id = team . parent_id ) and ( league . category_type = _utf8'league')))) join category_products cat_product on(( cat_product . category_id = dept . id ))) join products product on(( product . product_id = cat_product . product_id ))) where ( dept . category_type = _utf8'department') order by dept . id desc;

Answer 1

如果在要搜索的列上的“ v_prod_cat”表中添加索引，则这将有助于加快视图的速度。