Question

我的<{>> cakephp版本3.3 中的count() paginate存在问题：

我的桌子有6,000,000条记录。这里涉及的字段是name和cityf。两者都有MySQL索引

我显示10和10，尽管查询速度非常快，但count()分页的时间超过50秒。

如何在cakephp的3.3版本中解决这个问题。遵循以下两个SQL语句和时间：

选择查询主页：

SELECT 
  Rr.id AS `Rr__id`, 
  Rr.idn AS `Rr__idn`, 
  Rr.aniver AS `Rr__aniver`, 
  Rr.pessoa AS `Rr__pessoa`, 
  Rr.name AS `Rr__name`, 
  Rr.phoner AS `Rr__phoner`, 
  Rr.tipolf AS `Rr__tipolf`, 
  Rr.addressf AS `Rr__addressf`, 
  Rr.num_endf AS `Rr__num_endf`, 
  Rr.complem AS `Rr__complem`, 
  Rr.bairrof AS `Rr__bairrof`, 
  Rr.cityf AS `Rr__cityf`, 
  Rr.statef AS `Rr__statef`, 
  Rr.cepf AS `Rr__cepf`, 
  Rr.n1 AS `Rr__n1`, 
  Rr.n2 AS `Rr__n2`, 
  Rr.smerc AS `Rr__smerc`, 
  Rr.n3 AS `Rr__n3`, 
  Rr.n4 AS `Rr__n4`, 
  Rr.fone AS `Rr__fone`, 
  Rr.numero AS `Rr__numero` 
FROM 
  `MG` Rr 
WHERE 
  (
    Rr.name like 'MARCOS%' 
    AND Rr.cityf like 'BELO HORIZONTE%'
  ) 
ORDER BY 
  name asc 
LIMIT 
  10 OFFSET 0

= 10 ms

说明：

id  select_type     table   type    possible_keys   key     key_len     ref     rows    Extra   
1   SIMPLE  Rr  range   NAME,CITYF,cityfbairrof,cityfaddressf,cityfbairrofaddressf,namen1n2n3n4     NAME    63  NULL    21345   Using index condition; Using where

- 选择查询计数：

SELECT 
  (
    COUNT(*)
  ) AS `count` 
FROM 
  `MG` Rr 
WHERE 
  (
    Rr.name like 'MARCOS%' 
    AND Rr.cityf like 'BELO HORIZONTE%'
  )

= 51.247 ms

说明：

id  select_type     table   type    possible_keys   key     key_len     ref     rows    Extra   
1   SIMPLE  Rr  range   NAME,CITYF,cityfbairrof,cityfaddressf,cityfbairrofaddressf,namen1n2n3n4     NAME    63  NULL    21345   Using index condition; Using where

在其他几种情况下发生：总是查询计数非常慢。

我感谢任何帮助。

马科斯

Cakephp 3.0中的Paginate Count Query很慢

0 个答案: