Question about IIF in SQL query

D

dchow

I was trying to send a SQL query using ODBC to fill my worksheet with
some invoice information. In the Amount field I want it to be in
negative if the doc type is RETURN. So I did:

Select DOCNUM as Document,
DOCDATE as DocDate,
IIF(DOCTYPE="RET", -DOCAMT, DOCAMT) as Amount
From TableName

I was complaining about SQL syntax error. If I removed the IIF line
it worked fine. Does SQL support IIF?
 
B

Bob Phillips

Not AFAIK. Why don't you return DOCTYPE and DOCAMT and test DOCTYPE in Excel
and negate DOCAMT if ="RET".

--

HTH

Bob Phillips
... looking out across Poole Harbour to the Purbecks
(remove nothere from the email address if mailing direct)
 
D

dchow

I can't do that because what I was doing was to get a total amount for
each customer. If I did what you suggested I would easily fill all
65536 rows. If there is no way I have to do it in 2 queries, one for
iinvoice and one for return.
I thought if this could be done in Access why not Excel.
 
B

Bob Phillips

Okay, the other poster pointed out though that even if you can't use IIF,
there is always another way, DECODe for instance.

Is it Access you are querying?

--

HTH

Bob Phillips
... looking out across Poole Harbour to the Purbecks
(remove nothere from the email address if mailing direct)
 
D

dchow

I will try with DECOD.
No,it is not an Access database. It is a SQL database. I just tried to
access it with ACCESS queries. IIF worked with ACCESS but not Excel.
 
B

Bob Phillips

If it is SQL server, that should support DECODE. Sybase does.

--

HTH

Bob Phillips
... looking out across Poole Harbour to the Purbecks
(remove nothere from the email address if mailing direct)
 
D

dchow

Don't know what was wrong. It still returned syntax error when I used
DECODE.

I was doing
SELECT ....,
DECODE(DOCTYPE,"RET",-DOCAMT,DOCAMT),
 
R

Robin Hammond

I just had a look at the sql books online (you can get it off msdn
somewhere) and it doesn't appear to support IIF outside analysis services or
Decode.

I think you might be looking for a CASE statement.

I can't test this without recreating your db but the format looks something
like

SELECT DOCNUM AS Document,
DOCDATE AS DocDate,
'AMOUNT' =
CASE
WHEN DOCTYPE = 'RET' THEN
-DOCAMT
ELSE
DOCAMT
END
FROM TableName

Give it a try and let's us know if it works.

Here's a slightly more complex example I just had a look at from one of my
SQL views that might help. This gets the left area of ItemName up to a star
character.

SELECT 'ShortName' =
CASE
WHEN CHARINDEX('*',template_info.ItemName)>0 THEN
LEFT(template_info.ItemName,
CHARINDEX('*',template_info.ItemName)-1)
ELSE
template_info.ItemName
END,
corp_info.FullName
FROM corp_info

Robin Hammond
www.enhanceddatasystems.com
 
D

dchow

It worked perfectly. Thanks Robin.


I just had a look at the sql books online (you can get it off msdn
somewhere) and it doesn't appear to support IIF outside analysis services or
Decode.

I think you might be looking for a CASE statement.

I can't test this without recreating your db but the format looks something
like

SELECT DOCNUM AS Document,
DOCDATE AS DocDate,
'AMOUNT' =
CASE
WHEN DOCTYPE = 'RET' THEN
-DOCAMT
ELSE
DOCAMT
END
FROM TableName

Give it a try and let's us know if it works.

Here's a slightly more complex example I just had a look at from one of my
SQL views that might help. This gets the left area of ItemName up to a star
character.

SELECT 'ShortName' =
CASE
WHEN CHARINDEX('*',template_info.ItemName)>0 THEN
LEFT(template_info.ItemName,
CHARINDEX('*',template_info.ItemName)-1)
ELSE
template_info.ItemName
END,
corp_info.FullName
FROM corp_info

Robin Hammond
www.enhanceddatasystems.com
Click to expand...
 
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