Prinsip UNION, menggabungkan beberapa tabel menjadi satu query. Dia akan berjalan, bila jumlah field yang dipilih sama antar semua tabel.
Select field1 from tabel1
union
select field21 from tabel2
union
select field31 from tabel3
Maka, bila field tabel1 akan diambil data lebih banyak, bisa diakali begini
Select field1,field2,field3,field4 from tabel1
union
select field21,field21,field21,field21 from tabel2
union
select field31,field31,field31,field31 from tabel3
Atau, bisa juga dibuat SQL per satuan.
Select * from tabel1
select field21 from tabel2
select field31 from tabel3
hasilnya lalu dioleh sesuai kebutuhan (misal disisir dengan nama tertentu).
Semoga bisa membantu dan memberi semangat.
Hariyanto (Surabaya)
--------------------------------------------
On Fri, 29/7/16, 'Cecep' cepwahyu@gmail.com [belajar-access] <belajar-access@yahoogroups.com> wrote:
Subject: RE: [belajar-access] Query Union Error ketika tabel terkoneksi ke MySql
To: belajar-access@yahoogroups.com
Date: Friday, 29 July, 2016, 10:40 AM
Mas Hariyanto terimakasih atas
responsnya,Combobox ini sy gunakan untuk
memfilter report dimana di comboboxnya akan muncul pilihan
– All – supaya report tampil semuanya dan pilihan
week_Subc supaya report yg tampil sesuai week yg diinginkan,
nah kata – All – ini bukan dari sebuah field tapi
langsung dibuat di Querynya.Setelah saya utak atik masalah
muncul jika ada tambahan UNION SELECT yg kedua (UNION
SELECT left([Week_Subc],5) From TblCultureIncoming), jadi kalo bagian ini saya
hilangkan tidak terjadi error, padahal sy juga memerlukan
data Week_Subc dari tabel ini. Apakah ini memang tidak
memungkinkan atau bagaimana mas? RegardCW From:
belajar-access@yahoogroups.com
[mailto:belajar-access@yahoogroups.com]
Sent: 28 Juli 2016 20:13
To: belajar-access@yahoogroups.com
Subject: Re: [belajar-access] Query
Union Error ketika tabel terkoneksi ke
MySql cepwahyu...,
Sepertinya ada masalah di
SQL-nya. Karena syarat penggunaan SQL, jumlah fieldnya harus
sama.
Coba ganti seperti
ini:
SELECT
left(nama_field,5) From TblCultureProduction
UNION
SELECT
left([Week_Subc],5) From TblCultureProduction
UNION SELECT left([Week_Subc],5) From
TblCultureIncoming;
Semoga
bisa membantu dan memberi semangat.
Hariyanto (Surabaya)
--------------------------------------------
On Thu, 28/7/16, 'Cecep' cepwahyu@gmail.com
[belajar-access] <belajar-access@yahoogroups.com>
wrote:
Subject:
[belajar-access] Query Union Error ketika tabel terkoneksi
ke MySql
To: belajar-access@yahoogroups.com
Date: Thursday, 28 July, 2016, 4:00 PM
Dear access mania, Saat ini sy sedang
melakukan
migrasi BE access ke MySql dan
sudah berhasil tapi ada satu
masalah ketika
saya mencari data pada combobox padahal
ketika masih pake BE access tidak ada
masalah.Row Source pada combobox
sbb:SELECT
"--
All -- " From
TblCultureProduction UNION SELECT
left([Week_Subc],5) From TblCultureProduction;
UNION SELECT
left([Week_Subc],5) From
TblCultureIncoming; Jadi saya hanya akan
mengambil 5 karakter sebelah kiri saja.Nah
ketika BE sudah link ke
MySql tiba2 ketika
combobox tadi sy klik muncul error
sbb:
Mohon pencerahanya kira2 apa
masalahnya
ya?
Best RegardsCW
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