Laravel pagination won't re-initialize MySQL variables









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If I have this query:



select 
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products


And create a query using Eloquent builder:



Products::from(DB::raw('
(select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products) as q
'))->where('product_rank', '<=', 10)->paginate(5);


Because Laravel pagination wants to get the total count of all records, it executes an extra query like this:



select count(*) as aggregate from (
select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products
) q where product_rank <= 10


So @current_category and @product_rank won't re-initialize and the main query returns wrong results.



I wonder if there is way to re-initialize both variables.










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  • 1




    See e.g. MySql : Initialize mySql variable inside a query
    – Solarflare
    Nov 10 at 13:27










  • @Solarflare Very nice idea. It works.
    – Omid
    Nov 10 at 14:39














up vote
0
down vote

favorite












If I have this query:



select 
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products


And create a query using Eloquent builder:



Products::from(DB::raw('
(select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products) as q
'))->where('product_rank', '<=', 10)->paginate(5);


Because Laravel pagination wants to get the total count of all records, it executes an extra query like this:



select count(*) as aggregate from (
select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products
) q where product_rank <= 10


So @current_category and @product_rank won't re-initialize and the main query returns wrong results.



I wonder if there is way to re-initialize both variables.










share|improve this question

















  • 1




    See e.g. MySql : Initialize mySql variable inside a query
    – Solarflare
    Nov 10 at 13:27










  • @Solarflare Very nice idea. It works.
    – Omid
    Nov 10 at 14:39












up vote
0
down vote

favorite









up vote
0
down vote

favorite











If I have this query:



select 
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products


And create a query using Eloquent builder:



Products::from(DB::raw('
(select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products) as q
'))->where('product_rank', '<=', 10)->paginate(5);


Because Laravel pagination wants to get the total count of all records, it executes an extra query like this:



select count(*) as aggregate from (
select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products
) q where product_rank <= 10


So @current_category and @product_rank won't re-initialize and the main query returns wrong results.



I wonder if there is way to re-initialize both variables.










share|improve this question













If I have this query:



select 
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products


And create a query using Eloquent builder:



Products::from(DB::raw('
(select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products) as q
'))->where('product_rank', '<=', 10)->paginate(5);


Because Laravel pagination wants to get the total count of all records, it executes an extra query like this:



select count(*) as aggregate from (
select
id,
@product_rank := IF(@current_category = category_id, @product_rank + 1, 1) AS product_rank,
@current_category := category_id
from products
) q where product_rank <= 10


So @current_category and @product_rank won't re-initialize and the main query returns wrong results.



I wonder if there is way to re-initialize both variables.







mysql laravel eloquent






share|improve this question













share|improve this question











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asked Nov 10 at 12:07









Omid

1,85053147




1,85053147







  • 1




    See e.g. MySql : Initialize mySql variable inside a query
    – Solarflare
    Nov 10 at 13:27










  • @Solarflare Very nice idea. It works.
    – Omid
    Nov 10 at 14:39












  • 1




    See e.g. MySql : Initialize mySql variable inside a query
    – Solarflare
    Nov 10 at 13:27










  • @Solarflare Very nice idea. It works.
    – Omid
    Nov 10 at 14:39







1




1




See e.g. MySql : Initialize mySql variable inside a query
– Solarflare
Nov 10 at 13:27




See e.g. MySql : Initialize mySql variable inside a query
– Solarflare
Nov 10 at 13:27












@Solarflare Very nice idea. It works.
– Omid
Nov 10 at 14:39




@Solarflare Very nice idea. It works.
– Omid
Nov 10 at 14:39

















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