Create A/R distribution using IF...THEN or CASE

I am trying to write a query in Transact-SQL to create a user view in my SQL
database. I am trying to populate columns for each "aging" category (30, 60,
90, etc), so the correct age receives the amount due, but other columns are
zero. However, I can't find the correct CASE or IF...THEN syntax. It needs t
o
do something equal to the following:
If ServiceDateAge BETWEEN 0 AND 29 Then CurrentDue = PatientDue Else
CurrentDue = 0.
If ServiceDateAge BETWEEN 30 and 59 Then 30DayDue = PatientDue Else 30DayDue
= 0...
etc
I would be grateful for help...Thank you.Try using CASE expressions like the snippet below. See the Books Online for
more info.
SELECT
CASE WHEN ServiceDateAge BETWEEN 0 AND 29 THEN PatientDue ELSE 0 END AS
"CurrentDue",
CASE WHEN ServiceDateAge BETWEEN 30 AND 59 Then PatientDue ELSE 0 END AS
"30DayDue"
etc...
Hope this helps.
Dan Guzman
SQL Server MVP
"richardb" <richardb@.discussions.microsoft.com> wrote in message
news:30EBD6C4-AB7F-4F70-93EB-8C68AB5646C0@.microsoft.com...
>I am trying to write a query in Transact-SQL to create a user view in my
>SQL
> database. I am trying to populate columns for each "aging" category (30,
> 60,
> 90, etc), so the correct age receives the amount due, but other columns
> are
> zero. However, I can't find the correct CASE or IF...THEN syntax. It needs
> to
> do something equal to the following:
> If ServiceDateAge BETWEEN 0 AND 29 Then CurrentDue = PatientDue Else
> CurrentDue = 0.
> If ServiceDateAge BETWEEN 30 and 59 Then 30DayDue = PatientDue Else
> 30DayDue
> = 0...
> etc
> I would be grateful for help...Thank you.
>|||Thank you. That should do it. I did not see an example in the on-line books
of using CASE to populate a quantity in a column (thought it may have been
there).
"Dan Guzman" wrote:

> Try using CASE expressions like the snippet below. See the Books Online f
or
> more info.
> SELECT
> CASE WHEN ServiceDateAge BETWEEN 0 AND 29 THEN PatientDue ELSE 0 END A
S
> "CurrentDue",
> CASE WHEN ServiceDateAge BETWEEN 30 AND 59 Then PatientDue ELSE 0 END
AS
> "30DayDue"
> etc...
>
> --
> Hope this helps.
> Dan Guzman
> SQL Server MVP
> "richardb" <richardb@.discussions.microsoft.com> wrote in message
> news:30EBD6C4-AB7F-4F70-93EB-8C68AB5646C0@.microsoft.com...
>
>|||Dan one more question: Let's say that when ServiceDateAge BETWEEN 0 AND 29 I
want to update CurrentPatientDue to PatientDue but at the same time also
update CurrentInsuranceDue to InsuranceDue. Can I achieve this without
writing another full CASE statement?
"Dan Guzman" wrote:

> Try using CASE expressions like the snippet below. See the Books Online f
or
> more info.
> SELECT
> CASE WHEN ServiceDateAge BETWEEN 0 AND 29 THEN PatientDue ELSE 0 END A
S
> "CurrentDue",
> CASE WHEN ServiceDateAge BETWEEN 30 AND 59 Then PatientDue ELSE 0 END
AS
> "30DayDue"
> etc...
>
> --
> Hope this helps.
> Dan Guzman
> SQL Server MVP
> "richardb" <richardb@.discussions.microsoft.com> wrote in message
> news:30EBD6C4-AB7F-4F70-93EB-8C68AB5646C0@.microsoft.com...
>
>|||The important concept here is that SQL CASE is an expression and not a
statement. It simply returns a single value conditionally so you need to
replicate the CASE expression. If you are using SQL 2000, you can
encapsulate CASE in a user-defined scalar function like the example below.
CREATE FUNCTION dbo.AgeAmount
(
LowAge int,
HighAge int,
Age int,
Value int
)
RETURNS int
AS
BEGIN
RETURN
CASE
WHEN @.Age BETWEEN @.LowAge AND @.HighAge THEN @.Value
ELSE 0
END
END
GO
SELECT
dbo.AgeAmount(0, 29, ServiceDateAge, PatientDue) AS "CurrentDue",
dbo.AgeAmount(30, 59, ServiceDateAge, PatientDue) AS "30DayDue",
dbo.AgeAmount(0, 29, ServiceDateAge, CurrentInsuranceDue) AS
"CurrentInsuranceDue"
etc..
Hope this helps.
Dan Guzman
SQL Server MVP
"richardb" <richardb@.discussions.microsoft.com> wrote in message
news:79FB0AFA-77E7-46CA-93CA-1B815E514B8F@.microsoft.com...
> Dan one more question: Let's say that when ServiceDateAge BETWEEN 0 AND 29
> I
> want to update CurrentPatientDue to PatientDue but at the same time also
> update CurrentInsuranceDue to InsuranceDue. Can I achieve this without
> writing another full CASE statement?
> "Dan Guzman" wrote:
>|||This opens up a whole new area for me to learn and use. However, my first
attempt is producing an error I don't understand. Instead of declaring the
function every time, I thought I would attempt to create a "User Defined
Function". In the properties dialog I believe I am using your text as follow
s:
CREATE FUNCTION dbo.AgeAmount (LowAge int, HighAge int, Age int, Value int)
RETURNS int AS
BEGIN
(RETURN
CASE
WHEN @.Age BETWEEN @.LowAge AND @.HighAge THEN @.Value
ELSE 0
END)
END
GO
When I try to save this or check the syntax, the error is: "Must declare the
variable @.age". Can you help me with this as well, please?
"Dan Guzman" wrote:

> The important concept here is that SQL CASE is an expression and not a
> statement. It simply returns a single value conditionally so you need to
> replicate the CASE expression. If you are using SQL 2000, you can
> encapsulate CASE in a user-defined scalar function like the example below.
>
> CREATE FUNCTION dbo.AgeAmount
> (
> LowAge int,
> HighAge int,
> Age int,
> Value int
> )
> RETURNS int
> AS
> BEGIN
> RETURN
> CASE
> WHEN @.Age BETWEEN @.LowAge AND @.HighAge THEN @.Value
> ELSE 0
> END
> END
> GO
> SELECT
> dbo.AgeAmount(0, 29, ServiceDateAge, PatientDue) AS "CurrentDue",
> dbo.AgeAmount(30, 59, ServiceDateAge, PatientDue) AS "30DayDue",
> dbo.AgeAmount(0, 29, ServiceDateAge, CurrentInsuranceDue) AS
> "CurrentInsuranceDue"
> etc..
> --
> Hope this helps.
> Dan Guzman
> SQL Server MVP
> "richardb" <richardb@.discussions.microsoft.com> wrote in message
> news:79FB0AFA-77E7-46CA-93CA-1B815E514B8F@.microsoft.com...
>
>|||Try running the following using Query Analyzer:
CREATE FUNCTION dbo.AgeAmount (@.LowAge int, @.HighAge int, @.Age int, @.Value
int)
RETURNS int AS
BEGIN
RETURN
CASE
WHEN @.Age BETWEEN @.LowAge AND @.HighAge THEN @.Value
ELSE 0
END
END
Hope this helps.
Dan Guzman
SQL Server MVP
"richardb" <richardb@.discussions.microsoft.com> wrote in message
news:6FB45184-BC27-4FC4-8D7F-81208CA173BF@.microsoft.com...
> This opens up a whole new area for me to learn and use. However, my first
> attempt is producing an error I don't understand. Instead of declaring the
> function every time, I thought I would attempt to create a "User Defined
> Function". In the properties dialog I believe I am using your text as
> follows:
> CREATE FUNCTION dbo.AgeAmount (LowAge int, HighAge int, Age int, Value
> int)
> RETURNS int AS
> BEGIN
> (RETURN
> CASE
> WHEN @.Age BETWEEN @.LowAge AND @.HighAge THEN @.Value
> ELSE 0
> END)
> END
> GO
> When I try to save this or check the syntax, the error is: "Must declare
> the
> variable @.age". Can you help me with this as well, please?
> "Dan Guzman" wrote:
>|||Hello Dan,
OK I'm in business. However, I ran the script in Query Analyzer. It ran
successfully, but I could not find my function, even though I'm sure I was
accessing the correct database. So, I opened a new user defined function,
deleted the standard text and inserted your text. This saved with no errors
and I am using the function now. Thank you for introducing me to this
interesting area of SQL 2000.
"Dan Guzman" wrote:

> Try running the following using Query Analyzer:
> CREATE FUNCTION dbo.AgeAmount (@.LowAge int, @.HighAge int, @.Age int, @.Value
> int)
> RETURNS int AS
> BEGIN
> RETURN
> CASE
> WHEN @.Age BETWEEN @.LowAge AND @.HighAge THEN @.Value
> ELSE 0
> END
> END
> --
> Hope this helps.
> Dan Guzman
> SQL Server MVP
> "richardb" <richardb@.discussions.microsoft.com> wrote in message
> news:6FB45184-BC27-4FC4-8D7F-81208CA173BF@.microsoft.com...
>
>

Counting total number of items in each category

Hello everyone,

I have 2 tables. One with a list of countries and another with a list of users. The users table stores the Country they are from as well as other info.

Eg the structure is a little bit like this...

Countries:

--

CountryId

CountryName

Users:

UserId

UserName

CountryId

So, the question is how to a list all my countries with total users in each. Eg, so the results are something like this......

CountryName TotalUsers

United Kingdom 334

United States 1212

France 433

Spain 0

Any help woulld be great as I have been fumbling with this all morning. Im not 100% with SQL yet!!

Cheer

Stephen

here You go...

Code Snippet

Create Table #countries (

[CountryId] int ,

[CountryName] Varchar(100)

);

Insert Into #countries Values('1','USA');

Insert Into #countries Values('2','UK');

Insert Into #countries Values('3','IN');

Create Table #users (

[UserId] int ,

[UserName] Varchar(100) ,

[CountryId] int

);

Insert Into #users Values('1','John','1');

Insert Into #users Values('2','Dale','1');

Insert Into #users Values('3','Thome','2');

--With ZERO COUNT

Select

[CountryName],

Count([UserId])

from

#countries C

left Outer Join #users U on C.[CountryId] = U.[CountryId]

Group By

[CountryName]

--Without ZERO COUNT

Select

[CountryName],

Count([UserId])

from

#countries C

Inner Join #users U on C.[CountryId] = U.[CountryId]

Group By

[CountryName]

|||

Super! Many thanks and thank you for replying so quickly.

Makes sense now - easier than what I was trying to do!!!

Counting parent records and displaying Total?

We have an helpdesk sytem on SQL 2000. I am trying to show how much calls have been assigned to each parent category plus it's child categories in a single row. The thing is when I run my query it display parent and child categories and each on it's own rows. I do get the call totals for each row, but I would like to add the totals of the rows together and display it on row. The new table must have then 6 rows (because there is 6 parent categories) with the total of all calls for that parent category, as well as it's childs. Example:

parameter # Calls
---- ---
desktop\pp 5
desktop\qq 6 {This is what I am getting at this stage}
desktop\tt 4
network\rr 9
network\gg 10
software\vv 3

This is what I would like to have:

parameter # Calls
---- ---
desktop 15
network 19
software 3

Please Help!select p.*, c.*, (p.amt+c.amt) as "Total Amt"
from parent p
INNER JOIN
(select id, sum(amt) as amt
from child c
group by id) c ON
p.id = c.id;|||Sorry, but I Forgot to mention that the second column is a count of the occurances in the 1st column. The query has to be run on only one field.

I am attaching my query:

SELECT workitem_category_tree_value,
count(*) as '# Work Items'

FROM dbo.workitem_detail_view hd1
WHERE hd1.[workitem_is_last] = 1
AND UPPER(hd1.[workitem_category_tree_value]) LIKE UPPER('%')

GROUP BY hd1.[workitem_category_tree_value]

Then this result is diplayed:

Desktop 8
Desktop\Administration 12
Desktop\Administration\Reset Password 42
Desktop\Administration\Unlock Account 30
Desktop\Notebook\LAN 1
Desktop\Notebook\LAN\Join to Domain 2
Desktop\Notebook\LAN\Network Connection 1
Desktop\Notebook\RAS 1
Desktop\Notebook\RAS\Configure 5

Counting Items in Categories

Ive got this monster which will give me a parent categoryName and the number of records linked to a child of that category, I want to use it for a directory where the list of categories has the number of records in brackets next to them. Note: a A listing will show up in each category count it is associated with

Like

Accommodation (10)
Real Estate(30)
Automotive(2)
Education(1)...

Select trade_category.iCategory_Name,Listing_category.iPa rentID,count(Listing_category.iCategoryID) as num
from Listing_category,trade_category Where Listing_category.iParentID = trade_category.iCategoryID Group by
Listing_category.iParentID,trade_category.iCategor y_Name
Union ALL
Select Freecategory.sName,Listing_category.iParentID,coun t(Listing_category.iCategoryID) as num
from Listing_category,Freecategory Where Listing_category.iParentID = Freecategory.iFreeID Group by
Listing_category.iParentID,Freecategory.sName

Which Produces

Real Estate 12401 12
Extreme Sports 3 4

I would Like to get the same query to produce a list of all the empty records too.
so
ID Count
Accommodation 6112 0
Real Estate 12401 12
retail 12402 0
Extreme Sports 3 4
Cycling 5 0There is no such concept of an 'empty record'. If you were to describe to me an 'empty record', what would it be? In situations similar to what you describe, a record can have one of the following characteristics:

- Contain null values for one or more of its fields
- Not be returned with respect to some given criteria.

But there is no mention of an 'empty record' in relational theory or in any Database implementation. Looking at your query, I can't think of what it is you're actually trying to achieve, except in the case where a parent category may have no children, you need to return a result set similar to the following:

{ParentID, ChildCount}
ParentA, 0

When viewed in this way, the problem becomes a trivial LEFT JOIN query that will return all rows from set A irrespective of the contents of set B. In your example however, instead of returning the rows from Set B you will just return a count of the rows.

Select
SetA.columnA,
count(SetB.columnA)
from
SetA

left outer join SetB
on SetA.ColumnA = SetB.ColumnB

Remember: Simplification should be the goal of every developer. A paraphrased quote I once heard said: Perfection is reached not when you can no longer add to it, but when you can no longer take anything away.|||Ive found a short term solution will look at speeding it up when I have some spare time, and I have the live version working so it makes a bit more sense.

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