Hi Ron !
Ron wrote:
-----------------------------------------------------------------------------------------------------------------------------------------
| customercode | customer name | customerphonenumber | callednumber |
calldate | callstart | callend | callduration | callcost |
-----------------------------------------------------------------------------------------------------------------------------------------
| 10000116 | Company Name | Customer NUmber | 0061XXXXXXXXX |
2008-07-16 | 15:25:19 | 15:26:00 | 1 | 0.229375 |
| 10000116 | Company Name | Customer NUmber | 0063XXXXXXXXX |
2008-07-16 | 15:25:21 | 15:26:44 | 2 | 0.07759 |
| 10000116 | Company Name | Customer NUmber | 001XXXXXXXXXX |
2008-07-16 | 15:25:24 | 15:25:34 | 1 | 0.229375 |
| 10000116 | Company Name | Customer NUmber | 0060XXXXXXXXX |
2008-07-16 | 15:25:25 | 15:29:33 | 5 | 1.14688 |
[[...]]
------------------------------------------------------------------------------------------------------------------------------------------
Hi,
How can i count by countrycode with that table? I kind of need a summary
to count how many calls went to certain country. Thank You. I hope my
question is clear.
The question is two-fold:
1) Use "SELECT COUNT(*) FROM tab GROUP BY countrycode".
2) You don't have countrycode as a column, so
a) either you add it, filled by a trigger,
b) or you use an expression to calculate the "countrycode" value from
"callednumber" and use that for GROUP BY, see
http://dev.mysql.com/doc/refman/5.0/en/group-by-hidden-fields.html
I fear both approaches won't bee too easy, because the length of the
countrycode isn't constant.
I *assume* you need a list of the countrycode values (separate table)
and use that for the transformation, but I haven't thought about that
sufficiently to make a proposal.
Jörg
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