Getting The Number Of Records With Like Values

Jun 14, 2006

I have a resultset that looks something like this:

Anzahl users_statdata_hobbies
---------------------
499 Andere
266 Essen
60 Essen,Andere
127 Essen,Musik
10 Essen,Musik,Party,Andere
30 Essen,Party
4 Essen,Party,Andere
51 Kunst
4 Kunst,Andere
13 Kunst,Essen
4 Kunst,Essen,Andere

I get this with this query which might be altered somehow:



SELECT COUNT(*) AS Anzahl, users_statdata_hobbies

FROM vgetAuswertung2

GROUP BY users_statdata_hobbies

ORDER BY users_statdata_hobbies

Of course this is not normalized but I can't change this.

Nevertheless I need to get the full number of each Hobby and not only the combination of them.

So instead or in addition to the existing recordset I need e.g

357 Essen which ist the sum of all records containing 'Essen' in the above example

The list of individual hobbies is defined therefor I could loop through the list manually and search for 'WHERE Hobbies LIKE '%ESSEN%' and count but since it's quiet a big resultset and there are several other similar tasks already I'm looking for a more performant way and I'm sure it could be done in SQL directly.

Any ideas someone?

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Show Number Of Values As % Of Total Records..?

Feb 15, 2007

HiI'm migrating from Access til MySQL.Works fine so far - but one thing is nearly killing me:I got the count of total records in a variabel - (antalRecords)I got the count for the Field Q1 where the value value is = 'nej'Now I just need to calculate how many % of my records have the value 'nej'I access this worked very fine - but with MySQL ( and ASP) I just cant getit right!!! I go crazy ....My code looks like this :strSQL="SELECT COUNT(Q1) AS Q1_nej FROM Tbl_evaluering " &_"WHERE Q1 = 'NEJ' "set RS = connection.Execute(strSQL)antal_nej = RS("Q1_nej")procent_nej = formatNumber((antal_nej),2)/antalrecords * 100Hope ...praying for help ...Please ;-)best wishes -Otto - Copenhagen

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How to count the number of values that exist in a row based on the values from an array of numbers. Basically the the array of numbers I want to look for are in row 1 of table [test 1] and I want to search for them and count the "out of" in table [test 2]. Excuse me for not using the easiest way to convey my question below. I guess in short I have 10 numbers and like to find how many of those numbers exist in each row. short example:

Table Name: test1
Columns: m1 (int), m2 (int), m3 (int) >>> etc
Array/Row1: 1 2 3 4 5 6 7 8 9 10

------
Table Name: test2
Columns: n1 (int), n2 (int), n3 (int), n4 (int), n5 (int)

Row 1: 3, 8, 18, 77, 12
Row 2: 1, 4, 5, 7,18, 21
Row 3: 2, 4, 6, 8, 10

Answer: 2 out of 5
Answer: 4 out of 5
Answer: 5 out of 5

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Hi all

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please some one guide me how to do that?

Your help is highly appreciated

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Hi,

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Table 1 columns - name, address, zipcode, favorite food

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Is this possible?

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Apr 20, 2008

Why is it my number of records are different from my view. this are the following code that that i used in my code and in my view.

my code in my program: this code show all the records i know

If iConn.State = ConnectionState.Open Then iConn.Close()
iConn.Open()
Dim rsBills As New Data.DataSet
rsBills = New DataSet
Dim daBills As New SqlDataAdapter
daBills = New SqlDataAdapter
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Dim cmBills As New SqlCommand
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daBills.SelectCommand = cmBills
rsBills.AcceptChanges()
rsBills.Clear()
daBills.Fill(rsBills, "Bills")
Me.DataGridView1.DataSource = Nothing
Me.DataGridView1.DataSource = rsBills.Tables("Bills")

my code in views:

SELECT OR_no, Billing_mo, Account_no, Name, Address, Cno, Pres_read, Mprev_read, Sub_read, Pres2, Prev2, SRead2, Mtr_cons, Amount, NPC, Dmem,
Cmem, Tot_bill, D_Pmnt, Class, Newbill, Prd_fr, Prd_to, Type_Pmnt, Type_Date, Type_Docs, wtax
FROM dbo.Billing


hope you can help me guys

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With this algorithm you can sum up an unkown number of records, so that an aggregation matches a fixed value.
If there is not an exakt match available, the algorithm returns the nearest possible value!-- Initialize the search parameter
DECLARE@WantedValue INT

SET@WantedValue = 349

-- Stage the source data
DECLARE@Data TABLE
(
RecID INT IDENTITY(1, 1) PRIMARY KEY CLUSTERED,
MaxItems INT,
CurrentItems INT DEFAULT 0,
FaceValue INT,
BestUnder INT DEFAULT 0,
BestOver INT DEFAULT 1
)

-- Aggregate the source data
INSERT@Data
(
MaxItems,
FaceValue
)
SELECTCOUNT(*),
Qty
FROM(
SELECT 899 AS Qty UNION ALL
SELECT 100 UNION ALL
SELECT 95 UNION ALL
SELECT 50 UNION ALL
SELECT 55 UNION ALL
SELECT 40 UNION ALL
SELECT 5 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 50 UNION ALL
SELECT 250 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 90 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 50 UNION ALL
SELECT 350 UNION ALL
SELECT 450 UNION ALL
SELECT 450 UNION ALL
SELECT 100 UNION ALL
SELECT 100 UNION ALL
SELECT 50 UNION ALL
SELECT 50 UNION ALL
SELECT 50 UNION ALL
SELECT 1 UNION ALL
SELECT 10 UNION ALL
SELECT 1
) AS d
GROUP BYQty
ORDER BYQty DESC

-- Declare some control variables
DECLARE@CurrentSum INT,
@BestUnder INT,
@BestOver INT,
@RecID INT

-- If productsum is less than or equal to the wanted sum, select all items!
IF (SELECT SUM(MaxItems * FaceValue) FROM @Data) <= @WantedValue
BEGIN
SELECTMaxItems AS Items,
FaceValue
FROM@Data

RETURN
END

-- Delete all unworkable FaceValues
DELETE
FROM@Data
WHEREFaceValue > (SELECT MIN(FaceValue) FROM @Data WHERE FaceValue >= @WantedValue)

-- Update MaxItems to a proper value
UPDATE@Data
SETMaxItems =CASE
WHEN 1 + (@WantedValue - 1) / FaceValue < MaxItems THEN 1 + (@WantedValue - 1) / FaceValue
ELSE MaxItems
END

-- Update BestOver to a proper value
UPDATE@Data
SETBestOver = MaxItems

-- Initialize the control mechanism
SELECT@RecID = MIN(RecID),
@BestUnder = 0,
@BestOver = SUM(BestOver * FaceValue)
FROM@Data

-- Do the loop!
WHILE @RecID IS NOT NULL
BEGIN
-- Reset all "bits" not incremented
UPDATE@Data
SETCurrentItems = 0
WHERERecID < @RecID

-- Increment the current "bit"
UPDATE@Data
SETCurrentItems = CurrentItems + 1
WHERERecID = @RecID

-- Get the current sum
SELECT@CurrentSum = SUM(CurrentItems * FaceValue)
FROM@Data
WHERECurrentItems > 0

-- Stop here if the current sum is equal to the sum we want
IF @CurrentSum = @WantedValue
BREAK
ELSE
-- Update the current BestUnder if previous BestUnder is less
IF @CurrentSum > @BestUnder AND @CurrentSum < @WantedValue
BEGIN
UPDATE@Data
SETBestUnder = CurrentItems

SET@BestUnder = @CurrentSum
END
ELSE
-- Update the current BestOver if previous BestOver is more
IF @CurrentSum > @WantedValue AND @CurrentSum < @BestOver
BEGIN
UPDATE@Data
SETBestOver = CurrentItems

SET@BestOver = @CurrentSum
END

-- Find the next proper "bit" to increment
SELECT@RecID = MIN(RecID)
FROM@Data
WHERECurrentItems < MaxItems
END

-- Now we have to investigate which type of sum to return
IF @RecID IS NULL
IF @WantedValue - @BestUnder < @BestOver - @WantedValue
-- If BestUnder is closer to the sum we want, choose that
SELECTBestUnder AS Items,
FaceValue
FROM@Data
WHEREBestUnder > 0
ELSE
-- If BestOver is closer to the sum we want, choose that
SELECTBestOver AS Items,
FaceValue
FROM@Data
WHEREBestOver > 0
ELSE
-- We have an exact match
SELECTCurrentItems AS Items,
FaceValue
FROM@Data
WHERECurrentItems > 0With references to
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=73540
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=73610
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=78015
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=79505


Peter Larsson
Helsingborg, Sweden

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