Reporting Services :: Aggregate Functions Cannot Be Used In Group Expressions
Apr 21, 2015
I have report showing sales by Vendor. I need to list all the vendors with Monthly Total>5000 and combine the rest as "OTHER VENDORS"
Vendor is a Group in my report, so I tried to put an expression as a Group on:
=IIF(Sum(Fields!Mth_1_Sales.Value)>5000,Fields!Vendor_No.Value,"OTHER VENDORS")
I've got an error: "aggregate functions cannot be used in group expressions"
How do I get Vendors with Sales < 5000 into "OTHER VENDORS" ?
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Feb 17, 2008
Hi Guys,
I am having trouble with a particular query that is beyond my scope of understanding.
Basically I need to pull sales records based on the following criteria:
I have CustomerID, InvoiceNumber, ContractEndDate, MobileNumber, etc..
Customers recontract their mobile phone plans through us, and we have a new sales record for each time they recontract.
For example, CustomerNumber 123 has recontracted 3 times..
once on 2006-01-01, then on 2007-02-12, and finally on 2008-02-15..
So they have a 12 month contract each time.. then come in to recontract it.
So.. a customer has a single Customer Detail record, but may have many sales records attached. And a customer may have several sales for the SAME mobile phone number.
Currently to pull ALL sales records for all customers, my query is this:
Code:
SELECT xxx.CustomerID AS xxx_CustomerID,
xxx.Invoice AS xxx_Invoice,
yyy.PhoneType AS yyy_PhoneType,
yyy.PlanType AS yyy_PlanType,
yyy.ContractEnds AS yyy_ContractEnds,
yyy.MOB AS yyy_MobileNumber
FROM dbo.SaleControl xxx INNER JOIN dbo.SaleDetails yyy ON xxx.Invoice = yyy.Invoice
WHERE yyy.ContractEnds IS NOT NULL
AND xxx.CustomerID IS NOT NULL
We want to get a list of customers that we can call to recontract, based on the ContractEnd field.
However, we want UNIQUE mobile phone numbers, with the LATEST ContrtactEnd date.
So, Customer 123 has 6 sales, for 2 unique Mobile numbers, the sql may be like:
Code:
SELECT MAX(yyy.ContractEnds) AS LatestCED, yyy.MOB
FROM dbo.SaleControl xxx INNER JOIN dbo.SaleDetails yyy ON xxx.Invoice = yyy.Invoice
WHERE xxx.CustomerID='123'
GROUP BY yyy.MOB
Now, this works fine, and of course if i remove the WHERE clause, it collects all unique mobiles, with latest ContractEnd date for each, for all customers. (Customer 123 displays 2 mobile numbers, each with the LATEST ContractEnd date)
BUT i need this information ALONG WITH the other fields (xxx.CustomerID, xxx.Invoice, yyy.PhoneType, yyy.PlanType) and i have tried a few ways of doing it, but can't get my head around it..
Keep getting errors about Aggregate functions and Group By clause, and i understand why i am getting them, just cant think of any alternative query.
Can anyone please help me!
Thanks guys,
Mick
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Apr 16, 2008
Similar to binding a textbox to the First or the last row (using the First() or Last() functions) from the dataset, is there a way to bind to the second, third or fouth.... value in the dataset?
Here's what I want to implement-
Bind txtBox2 to =Field!Name[2].value
Bind txtBox3 to =Field!Name[3].value
Thanks
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Sep 29, 2015
I have an SSRS 2012 table report with groups; each group is broken ie. one group for one page, and there are multiple groups in multiple pages.
'GroupName' column has multiple values - X,Y,Z,......
I need to group 'GroupName' with X,Y,Z,..... ie value X in page 1,value Y in page 2, value Z in page 3...
Now, I need to display another column (ABC) in this table report (outside the group column 'GroupName'); this outside column itself is another column header (not a group header) in the table (report) and it derives its name partly from the 'GroupName' values:
Example:
Value X for GroupName in page 1 will mean, in page 1, column Name of ABC column must be ABC-X Value Y for GroupName in page 2 will mean, in page 2, column Name of ABC column must be ABC-Y Value Z for GroupName in page 3 will mean, in page 3, column Name of
ABC column must be ABC-Z
ie the column name of ABC (Clm ABC) must be dynamic as per the GroupName values (X,Y,Z....)
Page1:
GroupName Clm ABC-X
X
Page2:
GroupName Clm ABC-Y
Y
Page3:
GroupName Clm ABC-Z
Z
I have been able to use First(ReportItems!GroupName.Value) in the Page Header to get GroupNames displayed in each page; I get X in page 1, Y in page 2, Z in page 3.....
However, when I use ReportItems (that refers to a group name) in the Report Body outside the group,
I get the following error:
Report item expressions can only refer to other report items within the same grouping scope or a containing grouping scope
I need to get the X, Y, Z ... in each page for the column ABC.
I have been able to use this - First(Fields!GroupName.Value); however, I get ABC-X, ABC-X, ABC-X in each of the pages for the ABC column, instead of ABC-X in page 1, ABC-Y in page 2, ABC-Z in page 3, ...
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Sep 21, 2015
SSRS expressions for the following queries.
Last year last Week (15/9/2014)
Last Week ( 14/9/2015)
Before Last Week (7/9/2015)
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Nov 3, 2011
Is it possible to use the IN Operator in an expression in an SSRS 2008 R2 report? For example, to hide a textbox when the value is in a list of values, must one use nested IIFs such as:
=IIF(Fields!EYE_COLOR.Value="Blue",True,IIF(Fields!EYE_COLOR.Value="Green",True,IIF(Fields!EYE_COLOR.Value="Brown",True,False))) ?
The following would be much more straightforward, especially if the list of values is long, but it gets an error:
=IIF(Fields!EYE_COLOR.Value IN ("Blue","Green","Brown"),True,False)
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Jul 8, 2010
I'm doing a group by in an aggregate transformation. I have say 6 columns in the output and I'm grouping on all of them - how can I get duplicate rows in the output? If I do the same select and group by in SQL on the source data I don't get any duplicate rows. In fact out of 6000+ rows I only get 2 duplicates.
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Aug 27, 2015
I have 3 columns and here are 2 possible ways:
1. In all of them are values
2. Only col1 keeps value (col2 and col3 NULL)
For now It looks like:
| col1 | col2 | col3 |
----------------------
| val1 | | |
| val2 | val3 | val4 |
| val5 | val6 | val7 |
| val8 | | |
It should be like this:
| col1 | col2 | col3 |
----------------------
| val1 | -- merged cells, because col2 and col3 empty
| val2 | val3 | val4 |
| val5 | val6 | val7 |
| val8 | -- merged cells, because col2 and col3 empty
If I need to create groups (I've tried row/column grouping, but really unsuccessfully, far away from what I need).
As I think I need to write expression something like:
IFF(col2 & col3 = NULL) MERGE(col1, col2, col3)
Just I can't get success with expression's structure.
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Mar 14, 2014
I typically use Report Designer, but I have a new project requiring Report Builder 3.0. In Report Designer (BIDS), I can take more complex expressions (ie SWITCH with 5 or 6 options), and put each pairing on a new line to be able to better read the code.
In the Expression Editor in Report Builder, pressing the ENTER key on my keyboard closes the Expression dialog box and saves the changes.
Is there any way to add line returns in the code to make it more readable? The expression editor wraps when it runs out of room, but this doesn't make it more readable, in some cases, it wraps in the middle of a field name, making it even less readable.
The 2012 version also has this same "feature".
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Oct 7, 2006
I have the problem of aggregating semi-additive measures correct in higher levels in a matrix control of reporting services. I use the "Microsoft SQL Server Analysis Services" data provider. I have a calculated measure saved in the AS2005 cube which looks like:
[Measure].[Net Sales (kg)] = iif( [Measures].[Sales Volume KG] = 0, 0, [Measures].[Net Sales (RLG)] / [Measures].[Sales Volume KG] )
In the matrix, I have a 4 level Product Dimension on the rows (4 groups matrix1_level1 ..... matrix1_level4) and the visibility of the groups is toggled by each upper level, so I can drill in the product dimension. I place this measure in the data part of the matrix with (sum(Fields!Net_Sales__kg_.Value)). On the leave level all values ar correct. But on each other level, I see the sum of the sublevels.
After a lot of pain researching, I found that I have to use the "aggregate" function instead of the "sum" function, because aggregate uses the aggregating which comes from the data provider and the "Microsoft SQL Server Analysis Services" data provider is able to do that. Thats all of documentation I found. I have played around with this function, but always when I use it, I get no values on all levels. I tried the "scope" parameter of the aggregat function, nothing changed.
I tried aggreagate(Fields!Net_Sales__kg_.Value, "matrix1_level1"), aggreagate(Fields!Net_Sales__kg_.Value, "SalesCube") (SalesCub is the name of my Dataset in Reporting Services I use), aggreagate(Fields!Net_Sales__kg_.Value, "matrix1") and last but not least aggregate(Fields!Net_Sales__kg_.Value), all is the same, no values.
It seems to me, that the aggragate function returns "Nothing", because than, according to the Online Help, no values will be shown. But according to some blogs and forum entries, the "Microsoft SQL Server Analysis Services (AdomdClient)" Data provider should deal with aggregate. Have I do some special entries in the "Advanced..." Settings of the data provider??
Can someone tell me, what I'm doing wrong, and did someone know a good documentation (with examples) for the aggregate function on the internet. The Help-file doc is very, very poor!!!
Thanks
Hans
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Nov 6, 2015
I have an SSRS report with groups that when exported to excel contains drill-in's (plus marks on left side). The issue I have is that for all the groups in the drill-in, those cells become merged. I want to keep the group drill-in but have the cells UNMERGED. I have heard this can be done with the RDL XML but I don't know what to modify to accomplish this.
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Oct 9, 2007
I have a report that uses a function that is located out on the server. Does anyone know how I can integrate the function into RS? It's a function that pulls actual data into the report, it is not used for formatting.
Thanks
Teresa
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Apr 20, 2015
We are constrained to use a model that stores records in a main table and various attributes of the record in a second table. Something like this: main record table CAR, attribute table CAR_DETAILS with CAR_DETAILS have key value pairs like "color" "blue" and "doors" "4".
For reports we need to flatten the one to many nature of this to get CAR and color and doors by using an aggregate function like:
car_id, max(car_detail.value) filtered on car_detail.key = "color", max(car_detail.value) filtered on car_detail.key = "doors".
This works on other tables but the car_detail table (shall we say) appears to store its values as blobs. In any case when we attempt to aggregate we get "The query uses an aggregate function on a large value type expression. Large value type expressions can not be aggregated."
Since we can't change the model, we would need to use another function to change this to a smaller string (or date, these are actually mostly date), but none of the very limited set of functions available seems to work to make this aggregation possible (and there is no "first" or anything else similar).
The list of functions available in Report Model Queries can be found at [URL] .....
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Sep 30, 2015
I have a field called end date which can be empty to I have it coded to set todays date if empty using the following
=Iif (Fields!actual_discharge_ date. value Is Nothing, Today(), Fields!actual_discharge_date.value) which works fine.
The problem is I have to figure length of service which is coded as=
DateDiff("d", fields!approved_start_date.value, fields!actual_discharge_date.value)
Which works except when there is no actual discharge date. it will not see the current date that the first expression adds but still shows a huge negative value.
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Jul 5, 2007
I've been successfully using the WinForm ReportViewer control to view reports from relational databases. I'm starting to investigate viewing reports based on Analysis Services 2005 multi-dimensional sources.
From my reading (including the following thread http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1432935&SiteID=1), it seems that the RDL Aggregate function is key to getting proper results in expressions.
The RDL spec indicates that the Aggregate function behaviour is tightly coupled with the Data Processing Extension (DPE). This is fine for web-based Reporting Services, but with the ReportViewer control, we do all data processing and provide a .NET DataTable object that the viewer consumes and evaluates expressions from.
How does the WinForm ReportViewer handle evaluating the Aggregate function when there is no DPE to talk to?
Thanks!
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Jun 11, 2015
I am using SSRS 2014. I'm using a matrix instead of a tablix because it allows me to have dynamic columns. In the example I'm showing, two of the columns use the sum function to get the total counts per practice. The third column contains percentages so I averaged for the total but the value is inaccurate compared to the value I would get if the divided the the two totals that are sums of the counts. Is there a way for me to specify that I want to divide the total counts numerator divided by the total counts denominator?
Here's an example report output with the percentage column averaged (inaccurate):
PCP numerator denominator percentage
John Smith 66 104 63.46
Tom Jones 4 36 11.11
.
.
.
Jane Doe 1 1 100
Total 708 1005 72.3
So the 72.3 value is from Avg(metricvalue)
I would like to do this instead: % total = 708/1005, which equals 70.5 - a significant difference.
The metricvalue column is what is the value for every number above (Because it's a matrix).
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Nov 22, 2006
I installed 2K5 developer on my box. I was impressed with the Summary tab report functions and the reports available there. Then I ran the "Reporting services configuration" tool to get RS running, but now several of the summary reports are broken. There are several different error messages given in the summary window, depending on the report selected.
For example, the "server dashboard" now displays
Summary Unavailable
The information needed to display a summary page for the selected object is not available.
Error:
"sql_handle" is not a recognized table hints option. If it is intended as a parameter to a table-valued function, ensure that your database compatibility mode is set to 90.
The next two reports work, but the "Scheduler Health" report displays
Summary Unavailable
The information needed to display a summary page for the selected object is not available.
Error:
Incorrect syntax near '.'.
"Memory Consumption" works GREAT, but "Activity - All blocking transaction" shows:
Summary Unavailable
The information needed to display a summary page for the selected object is not available.
Error:
Incorrect syntax near '.'.
Incorrect syntax near '.'.
Incorrect syntax near the keyword 'as'.
Incorrect syntax near the keyword 'as'.
What could be the cause of such errors? Is there an "easy fix"? I wouldn't know how to "unconfigure" reporting services and have a feeling that wouldn't help anyway...
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Apr 22, 2015
I'm trying to sum a column in a report. in Most columns I can just wrap the row level expression with "Sum()" and it works. However, I have run into a few that give the following error. The Value expression for the text box ‘Textbox241’ specifies a scope that is not valid for a nested aggregate. The scope must be the same name of the scope specified by the outer aggregate or the name of a group or data region that is contained in the scope specified by the outer aggregate.Here is my row level expression that works.
=Code.Divide(sum(Fields!WeeklyUnits.Value),sum(Fields!EstUnits.Value))
*
(Code.Divide(sum(Fields!EstHours.Value),sum(Fields!EstHours.Value,"Job")))
Here is my attempt to Sum the row level for the footer area.
=Sum(Code.Divide(sum(Fields!WeeklyUnits.Value),sum(Fields!EstUnits.Value))
*
(Code.Divide(sum(Fields!EstHours.Value),sum(Fields!EstHours.Value,"Job"))))
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May 6, 2015
I am trying to create a column chart that calculates the percentage of computers in our IT environment that are Actively communicating to our SCCM Server.
I have two datasets:
1. Total_Count_Of_AD_PC DataSet.
2. PC_With_Active_SCCM_Clients dataset.
Basically i wan to calculate the percentage for each Region (i.e. AP for Asia Pacific, EMEA, Americas).
Below is the Total_Count_Of_AD_PC Dataset screenshot.
Below is the PC_With_Active_SCCM_Clients dataset.
Below is the expression that i used that is causing the error.
=CountDistinct(IIf(Fields!Region.Value="AP", "PC_With_Active_SCCM_Clients"),(Fields!Name.Value, "PC_With_Active_SCCM_Clients"),Nothing)/CountDistinct(IIf(Fields!Region.Value="AP", "Total_Count_Of_AD_PC"),(Fields!name.Value,
"Total_Count_Of_AD_PC"),Nothing)
Below is the error message....
The Y expression for the chart ‘Chart2’ has a scope parameter that is not valid for an aggregate function. The scope parameter must be set to a string constant that is equal to either the name of a containing group, the name of a containing data region, or the name of a dataset.
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Apr 4, 2008
Hi all, real basic question:
I can't seem to find a basic reference that tells me the syntax and allowable values of parameters in common functions such as Format or CDate when editing a Field Expression in Visual Studio (Report Definition Language?). Where would I start?
For example, I've discovered that the Format function "Returns a string formatted according to instructions contained in a format String expression.", and the string expression can have values like "D" and "d" which produce different results, but where would I find out what the allowable string expressions are and their meaning?
I have also been guessing at the syntax of the CDate command with no luck. I need a reference that tells me what the different function parameters mean.
thanks
Jac
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May 14, 2008
I have a table that is used for employee evaluations. There are six questions that are scored either 1, 2, 3, 4, or 5. I want to tally the responses on a page, but I wonder if I can do it without 35 separate calls to the database (I also want to get the average response for each question). I know I can do "SELECT COUNT(intWorkQuality) AS Qual1 FROM dbo.Summer_Project_Req WHERE intWorkQuality = '1' " and then "SELECT COUNT(intWorkQuality) AS Qual2 FROM dbo.Summer_Project_Req WHERE intWorkQuality = '2' " and so on. But can I somehow do the aggregating at the page level, and just refer back to a datasource that uses a generic statement like "SELECT intWorkQuality, intDepend, intAnalyze, intWrite, intOral, intCompatibility FROM dbo.Summer_Project_Req"? If I can, I am not sure what type of control would be best to use or what syntax to use to write the code-behind. I would like the results to be displayed in a grid format. Thanks in advance for your help.
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Nov 29, 2007
Can i combine two aggregate functions in one select statement?Like sum(count (field 1) * field 2) as tcost.Can i do something like that in my query?
thanks!
Funnyfrog
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Jan 26, 2008
Hi..
I'm doing a jsp with database using sql.. I'm trying to get the max of score group by name from this table:
Table record
id_no. . . .name. . . . .score
. . 1 . . . . .Philip . . . . .10
. . 2 . . . . . Jane . . . . .12
. . 3 . . . . . John . . . . .15
. . 4 . . . . . Anna . . . . .11
. . 5 . . . . . Jane . . . . .16
I use the code:
query = "select name,max(score) from record group by name";
resultset = stmt.executeQuery (query);
However, there is an error. It says, SQL Exception: Column not found
I've checked several tutorial sites and the codes there are the same command that I use. I've also tried using other aggregate functions like the sum, still the same error comes out..
Why is that so? What should I do?
Thanks a lot..
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Apr 18, 2006
I'm trying to migrate an app. from Access to SQL Server, and find that Transact-SQL does not support LAST/FIRST functions. Is there any alternative to these?
Below is the Access SQL statement:
SELECT Last(tblZoneNameString.Val) AS strZoneName, tblZoneNameString.TagIndex
FROM tblZoneNameString
GROUP BY tblZoneNameString.TagIndex
HAVING (((tblZoneNameString.TagIndex)>0));
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Jul 12, 2000
I'm using the data environment of VB 6.0 to create data reports.
In Oracle you can use a nested aggregate function in a select query like MAX(SUM(Field)). Can I do this in SQL? If so, how?
thanx
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Feb 10, 2007
Hi everyone,
I have a database with the following tables:
- programmer
- software
- studies(name, splace, cost, course)
I would like to find out which school has the max. nr. of students, but my query - SELECT splace FROM studies HAVING count(name) = (SELECT max(count(name)) FROM studies) - doesn't works, becouse MSSQL doesn't supports nested aggregat functions.
What should I do? Please help me, thanks in advance.
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Jan 30, 2006
Something a little different: C# on SQLTeam!
It's basically just cobbled together using the aggregate function and TVF in the StringUtilities sample as a starting point.
Er, sorry MS, I forgot to change the namespace from Microsoft.Samples.SqlServer.
/*
Aggregate functions: UnionBinary, IntersectBinary
Table-valued function: SplitBinary
*/
using System;
using System.IO;
using System.Data;
using System.Data.Sql;
using System.Data.SqlTypes;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using Microsoft.SqlServer.Server;
[assembly: System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design",
"CA1020:AvoidNamespacesWithFewTypes", Scope = "namespace",
Target = "Microsoft.Samples.SqlServer")]
namespace Microsoft.Samples.SqlServer
{
[Serializable]
[Microsoft.SqlServer.Server.SqlUserDefinedAggregate(
Microsoft.SqlServer.Server.Format.UserDefined,
IsInvariantToNulls = true,
IsInvariantToDuplicates = true,
IsInvariantToOrder = true,
MaxByteSize = 4100)
]
public class UnionBinary : Microsoft.SqlServer.Server.IBinarySerialize
{
private byte[] bitset;
public void Init() { bitset = new byte[4]; }
public void Accumulate(SqlInt16 value)
{
if (!value.IsNull && value.Value >= 0) {
if (bitset.Length <= value.Value / 8) {
Array.Resize(ref bitset, (value.Value/32 + 1) * 4);
}
bitset[value.Value / 8] |=
System.Convert.ToByte(1 << (value.Value % 8));
}
}
public void Merge(UnionBinary other)
{
if (other.bitset.Length > bitset.Length) {
Array.Resize(ref bitset, other.bitset.Length);
}
for (int i = 0; i < bitset.Length; i++) {
bitset[i] |= other.bitset[i];
}
}
public SqlBinary Terminate() { return new SqlBinary(bitset); }
public void Read(BinaryReader r)
{
int i = r.ReadInt32();
bitset = r.ReadBytes(i);
}
public void Write(BinaryWriter w) {
w.Write(bitset.Length);
w.Write(bitset);
}
}
[Serializable]
[Microsoft.SqlServer.Server.SqlUserDefinedAggregate(
Microsoft.SqlServer.Server.Format.UserDefined,
IsInvariantToNulls = true,
IsInvariantToDuplicates = true,
IsInvariantToOrder = true,
MaxByteSize = 4100)
]
public class IntersectBinary : Microsoft.SqlServer.Server.IBinarySerialize
{
private byte[] bitset;
public void Init() { bitset = new byte[4]; }
public void Accumulate(SqlInt16 value)
{
if (!value.IsNull && value.Value >= 0) {
if (bitset.Length <= value.Value / 8) {
Array.Resize(ref bitset, (value.Value/32 + 1) * 4);
}
bitset[value.Value / 8] &=
System.Convert.ToByte(1 << (value.Value % 8));
}
}
public void Merge(IntersectBinary other)
{
if (other.bitset.Length > bitset.Length) {
Array.Resize(ref bitset, other.bitset.Length);
}
for (int i = 0; i < bitset.Length; i++) {
bitset[i] &= other.bitset[i];
}
}
public SqlBinary Terminate() { return new SqlBinary(bitset); }
public void Read(BinaryReader r)
{
int i = r.ReadInt32();
bitset = r.ReadBytes(i);
}
public void Write(BinaryWriter w) {
w.Write(bitset.Length);
w.Write(bitset);
}
}
public sealed class SplitBinaryCls
{
[SqlFunction(FillRowMethodName = "FillRow")]
public static IEnumerable SplitBinary(SqlBinary argument)
{
List<Int16> r = new List<Int16>();
if (!argument.IsNull) {
for (int i = 0; i < argument.Length; i++) {
for (int j = 0; j < 8; j++) {
if ((argument.Value[i] & Convert.ToByte(1 << j)) != 0) {
r.Add(Convert.ToInt16(i*8+j));
}
}
}
}
return r;
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design",
"CA1021:AvoidOutParameters")]
public static void FillRow(Object obj, out Int16 stringElement)
{
stringElement = (Int16)obj;
}
private SplitBinaryCls() { }
}
}
To install the compiled dll something like:
CREATE ASSEMBLY BinaryUtilities
FROM 'C:...BinaryUtilitiesindebugBinaryUtilities.dll'
WITH permission_set=Safe;
GO
CREATE AGGREGATE UnionBinary(@input smallint)
RETURNS varbinary(4096)
EXTERNAL NAME [BinaryUtilities].[Microsoft.Samples.SqlServer.UnionBinary];
GO
CREATE AGGREGATE IntersectBinary(@input smallint)
RETURNS varbinary(4096)
EXTERNAL NAME [BinaryUtilities].[Microsoft.Samples.SqlServer.IntersectBinary];
GO
CREATE FUNCTION SplitBinary(@input varbinary(4096))
RETURNS TABLE(ix smallint)
AS EXTERNAL NAME [BinaryUtilities].[Microsoft.Samples.SqlServer.SplitBinaryCls].[SplitBinary];
GO
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Mar 26, 2006
I have a select statement like this:
"SELECT AVG(Price) FROM prices GROUP BY Category"
Which of course returns a list of average prices.
I want to get a sum of that list, something that would work like this:
"SELECT SUM(SELECT AVG(Price) FROM prices GROUP BY Category)"
That code doesn't work, but that's what I want it to do and I'm not sure how to do it.
Thanks!
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Jul 23, 2005
Hi.Just as we have AVG(COLUMN_NAME) and MAX(COLUMN_NAME) how can I writemy own variation of a such a function. If I can appreciate how to dothis,then I hopefully I can write a MEDIAN(COLUMN_NAME) type function or amore general function like a 10% percentile function with syntax suchasPERCENTILE(COLUMN_NAME,25).Regards JC......
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Feb 14, 2006
Hi allFirstly this my first time posting to technical groups - so anymistakes I apologise for in advance.I am trying to count records in several secondary tables for the samerun in a primary table. However, there might be no records in thesesecondary tables for the specific run. Hence the sql below returnsnulls.Select run, (select count(errors) from table2 where run = t1.run groupby run) as errors, (select count(user) as users from table3 where run =t1.run and user = active group by run, dd)from table1 t1(Please note the different group bys. )I do not want nulls to be returned but to be replaced with 0. I havetried the isnull function but this does not work. egSelect run, (select isNull(count(errors),0) from table2 where run =t1.run group by run) as errors, (select isNull(count(user),0) as usersfrom table3 where run = t1.run and user = active group by run, user)from table1 t1Nor will isnull work if I put it around the select clause.Any suggestions?Thanks for the help!
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Nov 29, 2006
Do aggregate functions (sum, count, min, max) inherently cause tablelocks?More concretely, would the following query typically result in a tablelock?select sum(quantity) as totalfrom productsThanks,Scott
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Jul 20, 2005
I have a complex statement that is used in a SELECT statement. Afterall my calculations I need to do an additional filter on the results.Can I use an alias anywhere or is the AS clause just for columndisplay purposes?Instead of:SELECT column1,column2,some_complex_statement_using_SUM_AVG_and_a_few_CAS E_statementsAS TotalFROM table_nameHAVINGsome_complex_statement_using_SUM_AVG_and_a_few_CAS E_statements[color=blue]> 1[/color]Can I have:SELECT column1,column2,some_complex_statement_using_SUM_AVG_and_a_few_CAS E_statementsAS TotalFROM table_nameHAVINGTotal > 1As I understand it, the HAVING clause is used for filtering AFTERaggregate functions are calculated so the alias SHOULD be available.
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May 22, 2008
I have Following SQL query
SELECT SUM(TOTAL) FROM MYTABLE WHERE DATEORIGINATED='11/11/07'
the above query will give me total for dateoriginated , but I am reading that dateoriginated value from another table and that table has multiple value of dateoriginated.
what I would like to do is to run above SQL aggregate functions query for two different dates at the same time and I would like to get total
help me how to do this?
thank u
maxmax
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