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Author Topic: nomor acak  (Read 261 times)

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Offline cantika

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nomor acak
« on: March 10, 2010, 01:36:37 PM »
mohon bantuannya

saya buat program soal databasenya :
no, soal, kunci

database saya index no, nah kalao ditampilkan akan urut seusai nomornya.
Bagaimana cara membuat supaya nomor yang muncul acak..? sehingga user 1 dengan yang lainnya tampiulannya beda

n tadi saya posting soal koneksi di localhost sukses tapi dengan ip tidak bisa sukses koq hilang ya..? apa di delete admin ya..? makasih

Offline fansul

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Re: nomor acak
« Reply #1 on: March 10, 2010, 02:23:05 PM »
klu nggak salah ingat di vfp ada fungsi RAND(), klu saya lebih suka pakai sys(3)
silakan yang lain

Offline foxy

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Re: nomor acak
« Reply #2 on: March 10, 2010, 03:29:39 PM »
Pakai rand() seperti post fansul saya rasa bisa menghasilkan nilai random yang lebih acak daripada sys(3).

rand(-1)    && seeding...

select *, rand() as nAcak from Customers order by nAcak

hth,
foxy
Some new posts...

This post is provided as is. Feel free to use all the codes and information, however understand that I don't have any obligations to fix any bug(s) or follow up this subject.

Offline hariyana

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Re: nomor acak
« Reply #3 on: March 10, 2010, 04:01:02 PM »
betul mas foxy sebaiknya pakai rand()

Offline fansul

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Re: nomor acak
« Reply #4 on: March 11, 2010, 07:51:44 AM »
pak foxy bisa ajarin pakai rand() yang benar bagaimana ya ?, saya pernah pakai rand() tapi hasilnya banyak terjadi double, akhirnya saya ganti pakai sys(3)
saya perlu nomor acak 6 digit

Offline rifox

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Re: nomor acak
« Reply #5 on: March 11, 2010, 08:08:43 AM »
RAND() <> SYS(3)

Rand() : Acak dari range tertentu
Sys(3) : Pengambilan nomor dari system yg unik (kalo di VFP ; legal file name)

Maaf kalo salah  :icon_salut:

Offline aris_ah

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Re: nomor acak
« Reply #6 on: March 11, 2010, 09:28:16 AM »
coba pake   sys(2015)
walaupun bukan random  tapi udah pasti unique .... :D

regards

Offline a17dh4

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Re: nomor acak
« Reply #7 on: March 11, 2010, 10:44:46 AM »
kalo tipe field no itu numeric, berarti yg paling cocok rand()

contoh,
jika ingin mengambil nilai acak dari 1-10 = INT(RAND()*10)
jika ingin mengambil nilai acak dari 1-100 = INT(RAND()*100)
dst....
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Offline cantika

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Re: nomor acak
« Reply #8 on: March 11, 2010, 11:15:18 AM »
makasih master semuanya, akan saya coba