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]?

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