SQL Dapatkan X entri terakhir dari 'custom' post_type menghitung jumlah individu dari post_type kustom

Coba ini;)

Kueri 1 :

select t1.*, t2.userCnt
from `posts` t1
inner join (
    select max(`ID`) as `ID`, `user`, count(1) as userCnt
    from `posts`
    where `user` != '1'
    and `post_type` = 'custom'
    group by `user`
) t2 on t1.`ID` = t2.`ID` and t1.`user` = t2.`user`
order by t1.`ID` desc limit 4

Periksa SqlFiddle ini Hasil :

|   ID | user |                Date | title |    status | post_type | userCnt |
|------|------|---------------------|-------|-----------|-----------|---------|
| 2783 |    5 | 2016-05-24 11:24:08 | Title | published |    custom |       2 |
| 2759 |    3 | 2016-05-07 14:00:22 | Title | published |    custom |       3 |
| 2757 |   12 | 2016-05-02 12:41:00 | Title | published |    custom |       2 |
| 2683 |   15 | 2016-04-22 20:27:45 | Title | published |    custom |       2 |

Subkueri t2 akan mendapatkan ID maksimum di setiap pengguna ketika user != '1' and post_type = 'custom' , lalu inner join t1 dengan t2 pada t1.ID = t2.ID and t1.user = t2.user akan memberi kami catatan yang memiliki ID maks oleh setiap user dalam tabel post . Seperti :"2783", "2759", "2757", "2683", "2681", "2652", "2630", "2617", "2596", "2215".

Dan terakhir dengan order by dan limit , tentu saja Anda bisa mendapatkan "2783", "2759", "2757", "2683". Semoga saya tidak salah mengartikan pertanyaan Anda.