Mysql 外联接多表
我有4个要加入的表:Mysql 外联接多表,mysql,sql,database,join,Mysql,Sql,Database,Join,我有4个要加入的表: tbl_transaksi_header -------------------- kode_transaksi kode_user nama_penerima email_penerima alamat_penerima bank telpon tbl_konfirmasi -------------------- id kode member namarekening tbl_user ------------------- kode_user username_
tbl_transaksi_header
--------------------
kode_transaksi
kode_user
nama_penerima
email_penerima
alamat_penerima
bank
telpon
tbl_konfirmasi
--------------------
id
kode
member
namarekening
tbl_user
-------------------
kode_user
username_user
tbl_transaksi_detail
---------------------
kode_transaksi
harga
jumlah
status
我想在nama_rek中显示所有数据,包括NULL
我试过这个:
SELECT t.status, t.kode_transaksi kode, u.username_user nama_user, t.nama_penerima penerima, t.telpon, t.bank, sum(d.harga*d.jumlah) total,k.namarekening nama_rek
FROM tbl_transaksi_header t
JOIN tbl_user u
ON t.kode_user=u.kode_user
JOIN tbl_transaksi_detail d
ON t.kode_transaksi=d.kode_transaksi
LEFT OUTER JOIN tbl_konfirmasi k
ON t.kode_transaksi=k.kode
工作正常,但不显示空结果,仅显示1行结果。我想要这样的东西:
status kode nama_user penerima telpn bank total nama_rek
xxx xxx xxx xxx xxx xxx xxx NULL
xxx xxx xxx xxx xxx xxx xxx NULL
xxx xxx xxx xxx xxx xxx xxx yyy
xxx xxx xxx xxx xxx xxx xxx NULL
样本数据:
kode_transaksi kode_user nama_penerima email_penerima alamat_penerima bank telpon
kd1 1 john some@email.com florida Bank A 088833221
kd2 2 elsa some@email.com uk Bank B 088833222
kd3 1 roy some@email.com manhattan Bank C 088833223
id kode member namarekening
1 kd1 paul paul
kode_user username_user
1 paul
2 elena
kode_transaksi harga jumlah status
kd1 10 2 process
kd1 5 2 process
kd1 5 1 process
kd2 4 3 pending
kd2 3 4 pending
kd3 2 3 pending
我想要这个输出:
status kode nama_user penerima telpon bank total nama_rek
process kd1 paul john 088833221 Bank A 35 paul
pending kd2 elena elsa 088833222 Bank B 24 NULL
pending kd2 elena roy 088833223 Bank C 6 NULL
你的加入很好;问题是您的select中有一个总和,没有GROUP BY。试试这个:
SELECT t.kode_transaksi kode, u.username_user nama_user, t.nama_penerima penerima, t.telpon, t.bank, sum(d.harga*d.jumlah) total,k.namarekening nama_rek
FROM tbl_transaksi_header t
JOIN tbl_user u
ON t.kode_user=u.kode_user
JOIN tbl_transaksi_detail d
ON t.kode_transaksi=d.kode_transaksi
LEFT OUTER JOIN tbl_konfirmasi k
ON t.kode_transaksi=k.kode
GROUP BY
t.kode_transaksi, u.username_user, t.nama_penerima , t.telpon, t.bank,k.namarekening
仅适用于t.kode_transaksi集团。提前谢谢是的。。。。通常,按未聚合的所有字段分组是一种良好的做法。一些RBDM将失败,否则,对我来说,这比允许它更好。