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# Formula help

Posted on 2010-09-05
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Hi,

I have record select statement that looks this:

{opencall1.logdatex} in (((today-CDate(1970,01,01))*24*60*60) - 2592000) to (today-CDate(1970,01,01))*24*60*60

Basically the logdatex field is in unixtime. Everytime a call is logged in my helpdesk sytem the time of that call is loggd in that table. That formula calculates the lat 30 days.

The problem I am having is that I cannot use that in record select statement anymore. Part of my reports need to show average calls and when you have that select statement in it only calculates customers that have called and not the ones that havent.

So I need to apply that formula in a seperate formula field and not in the record select statement.

I have created this formula to calculate the number of calls in the last 30 days.

However it does not work, can anyone help?

{opencall1.logdatex} in (((today-CDate(1970,01,01))*24*60*60) - 2592000) to (today-CDate(1970,01,01))*24*60*60
and distinctcount ({opencall1.callref})

Thanks

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Question by:Dan560
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LVL 58

Expert Comment

ID: 33606115
Don't you need a number?

and distinctcount ({opencall1.callref}) > 0
0

LVL 2

Author Comment

ID: 33606128
Ok, that works, although I get an output of false or false

Is there a way I can count if the output is false then put 0 if it is true then put 1 ?

I just would like to then count all of the trues

Thanks
0

LVL 77

Expert Comment

ID: 33606163
I assume that by ' average calls ' you must be calculating the average number of calls per customer.

If so, then you need a single value for the total number of customers.

To get that you can use a sql expression field which looks something like..

//%CustCount

(Select Count(customerid) from customertable)

This must be written in sql language used by your database.

You need to include the customer table in the report data source although it is not necessary to include any fields from it in the report.

You can then create a formula field to divide the total number of calls by this result
Something like..
Count ({opecall1.callid})/{%custcount}

0

LVL 2

Author Comment

ID: 33606248
All I'm getting with the sql expressions is errors:

Error in compiling SQL Expression:

Database connection error: '42000:[MySQL][ODBC 3.51 Driver][mysqld-4.0.16-log] You have an error in your SQL syntax

(Select Count (cust_id) from opencall.cust_id)
0

LVL 77

Expert Comment

ID: 33606880
(Select Count (cust_id) from opencall)

Assuming your table is called opencall.
0

LVL 2

Author Comment

ID: 33606898
Unfortunatley that didnt work.

I am using mysql, if I drag the table I want to use it appears like this:

`opencall`.`cust_id`

0

LVL 100

Expert Comment

ID: 33607529
Where are you using the SQL?

mlmcc
0

LVL 2

Author Comment

ID: 33607532
SQL expression section in formula editor
0

LVL 100

Expert Comment

ID: 33607635
What have you entered as the SQL Expression?

A SQL Expression is jsut a SELECT statement that returns a sungle value.

mlmcc
0

LVL 35

Accepted Solution

James0628 earned 500 total points
ID: 33624559
If you just want a count of the records with dates in that range, you could create a formula like the following and do a summary on it:

if {opencall1.logdatex} in (((today-CDate(1970,01,01))*24*60*60) - 2592000) to
(today-CDate(1970,01,01))*24*60*60 then
1

However, your use of DistinctCount ({opencall1.callref}) implies that it's not that simple.  If you could have multiple records with the same callref and only want to count each callref once, it does get a bit more complicated.  If that's the case, would all of the records for a given callref have the same logdatex?  If not, do you include a callref in the count if _any_ of the dates for that callref are in the last 30 days, or only if _all_ of them are in the last 30 days?

James
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