Re: Select rows when all all ids of its children records matches

Hi Rob,

I figured it out. thanks. It is giving correct data.

> Aren't you looking for cte.tags = array[1,2]?

posts_tags_cte has tags column, so I am using it.

Thanks,

Arup Rakshit
ar(at)zeit(dot)io

> On 12-Sep-2018, at 9:47 PM, Rob Sargent <robjsargent(at)gmail(dot)com> wrote:
>
>
>
> On 09/12/2018 10:08 AM, Arup Rakshit wrote:
>> I tried :
>>
>> WITH posts_tags_cte AS (
>> SELECT post_id, array_agg(tag_id) as tags
>> FROM posts_tags
>> WHERE tag_id in (1, 2)
>> GROUP BY post_id
>> )
>> SELECT posts.id <http://posts.id/> FROM posts_tags_cte JOIN posts ON posts.id <http://posts.id/> = posts_tags_cte.post_id
>> WHERE posts_tags_cte.tags @> array[1, 2]::int8[]
>>
>> But it gives me all the posts.
>>
>>
> Aren't you looking for cte.tags = array[1,2]?
>