Special SQL to export customer data to MailChimp

Hi Experts,

I am attempting to export customer data from MS Access to MailChimp.
My MailChimp List uses a Group called "Interests".
So a customer can nominate 0-4 interests: Interest1, Interest2, Interest3, Interest4.

I have a Crosstab query that outputs the customer interests in this form:

Sample output from Crosstab query
The complication is that MailChimp rolls Interests in to a single field, for example:

"Interest1, Interest2, Interest3, Interest4" - if customer is interested in all 4 topics
"Interest1, Interest4" - if customer is interested in these 2 topics
"" - if customer has not specified any interests

Is it possible to generate this type of output using SQL?

Here is a sample MS Access database for testing.

Regards,
Leigh
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LeighWardleAsked:
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als315Commented:
Can you show exact expected result?
Should it be csv file?
LeighWardleAuthor Commented:
Yes, I want to generate a csv file. something like this:

"Email Address","First Name","Last Name","Interests" 
x.y@domain.com,John,Doe,"Interest1, Interest4"
.........

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als315Commented:
Can you show corect csv data from your sample?
ClientID,Interest1,Interst2,Interest3,Interest4
1,,,,
10110103,,2,,
10110104,,2,1,
10110105,,2,,
...
10110109,1,2,,
10110110,,3,1,1
or
1
10110103,2
10110104,2,1
10110105,2
...
10110109,1,2
10110110,3,1,1
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LeighWardleAuthor Commented:
Here is the correct csv data from my sample:

"ClientID","<>","Interest1","Interest2","Interest3","Interest4"
"1",1,,,,
"10110103",,,2,,
"10110104",,,2,1,
"10110105",,,2,,
"10110106",,,2,1,
"10110108",,,2,1,
"10110109",,1,2,,
"10110110",,,3,1,1

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als315Commented:
Change your query to:
TRANSFORM Count(CLIENTS3.ClientID) AS CountOfClientID
SELECT CLIENTS3.ClientID
FROM CLIENTS3 LEFT JOIN ([Item Transactions] LEFT JOIN Items ON [Item Transactions].ItemID = Items.ItemID) ON CLIENTS3.ClientID = [Item Transactions].CustomerID
GROUP BY CLIENTS3.ClientID
PIVOT IIf(IsNull([ItemCategory]),"<>",[ItemCategory]);

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and export it as text with master. Don't forget to incliude headings into export.
Result is included
aaa-MailChimp-Export---Crosstab.txt
LeighWardleAuthor Commented:
Thanks, als315.

As I commented above, the csv file output that I need is something like this:

"Email Address","First Name","Last Name","Interests" 
x.y@domain.com,John,Doe,"Interest1, Interest4"
.........

Open in new window

als315Commented:
In your comment #a40778226 I see sample. Output from my query is exactly as in this comment.
If your comment was wrong, please, show exact expected csv file, based on your sample DB
LeighWardleAuthor Commented:
Hi als315, please accept my apologies for our misunderstanding.

The exact expected csv file, based on my sample DB is:

ClientID	Interests
1	
10110103	Interest2
10110104	"Interest2,Interest3"
10110105	Interest2
10110106	"Interest2,Interest3"
10110108	"Interest2,Interest3"
10110109	"Interest1,Interest2"
10110110	"Interest2,Interest3"

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It would not matter if quotes are included, for example:

ClientID	Interests
1	                ""
10110103	"Interest2"
..........

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als315Commented:
You can use DConcat function from Patrick Mattews article Domain Aggregate for Concatenating Values
In sample this function is added to Module1. In the beginning of function you can find description of fields.
Final query - "MailChimp Export"
Crosstab-Query-Test.accdb

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LeighWardleAuthor Commented:
Many thanks, als315.
You are a Legend!
Regards,
Leigh
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