Setelah saya jalakan program keluar pesan error sbb:

The sum or average aggregate operation cannot take a varchar data type as an 
argument.
Kenapa ?

Perlu saya sampaikan bahwa nama tabelnya ------>  Transaksi
kemudian nama Fieldnya Total_Hours
Total_hoursnya berisi 2 jam  4 jam dst
Jadi saya mau hitung angkanya saja yaitu menjadi 6 jam yang didapat dari 2 + 4
----- Original Message ----
From: Ronald Irawan <[EMAIL PROTECTED]>
To: [email protected]
Sent: Tuesday, 20 February, 2007 5:49:31 PM
Subject: Re: [indoprog-vb] Tanya coding untuk menghitung type data varchar

"Select sum(left(tablenya, len(tableny) -4) ) from tablenya"
angka 4, di dpt dari spasi + JAM

Mudah2xan bisa

Thanks
Ronald Irawan
http://www.Foodinve stment.com/ ?id=ronald_ delgeano
Jakarta

Tustadi I Made <[EMAIL PROTECTED] co.uk> 
Sent by: indoprog-vb@ yahoogroups. com
20/02/2007 15:19
Please respond to
indoprog-vb@ yahoogroups. com

To
Programmer-VB@ yahoogroups. com, indoprog-vb@ yahoogroups. com
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Subject
[indoprog-vb] Tanya coding untuk menghitung type data varchar

Teman2 minta tolong,

saya mempunyai type database varchar.
katakanlah isi tabelnya 2 jam, 6 jam, 10 jam
gimana codingnya supaya akhirnya bisa hasilnya 18 jam yaitu didapat dari 2 
jam + 6 jam + 10 jam.

Tolong kasitahu contoh codingnya.

Terima kasih.

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