Need Help On SQL Server Functions
Sep 6, 2001
Hello all,
Recently I changed over a ASP script from our old Access 97 database to our new SQL database. When I changed it over, some of my SQL pulls on my Active Server Page started to give me erros. One of them is the function
date(). When I used it pulling from Access like this :
strSQLQ = "SELECT * FROM cocoitem WHERE CustNum = '" & strcustnum & "' AND stat = 'C' AND [due-date] > DateAdd('yyyy', -1, Date()) Order By [cust-po], [due-date] ASC ;"
Then it worked fine. When I redirected the ASP to the new SQL server I recieved an error like this:
Microsoft OLE DB Provider for SQL Server error '80040e14'
'Date' is not a recognized function name.
/scripts/order/shippingstatsclose.asp, line 45
So my question is, what is the SQL server equivalent of the function Date()?
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May 26, 2006
I was playing around with the new SQL 2005 CLR functionality andremembered this discussion that I had with Erland Sommarskog concerningperformance of scalar UDFs some time ago (See "Calling sp_oa* infunction" in this newsgroup). In that discussion, Erland made thefollowing comment about UDFs in SQL 2005:[color=blue][color=green]>>The good news is that in SQL 2005, Microsoft has addressed several of[/color][/color]these issues, and the cost of a UDF is not as severe there. In fact fora complex expression, a UDF in written a CLR language may be fasterthanthe corresponding expression using built-in T-SQL functions.<<I thought the I would put this to the test using some of the same SQLas before, but adding a simple scalar CLR UDF into the mix. The testinvolved querying a simple table with about 300,000 rows. Thescenarios are as follows:(A) Use a simple CASE function to calculate a column(B) Use a simple CASE function to calculate a column and as a criterionin the WHERE clause(C) Use a scalar UDF to calculate a column(D) Use a scalar UDF to calculate a column and as a criterion in theWHERE clause(E) Use a scalar CLR UDF to calculate a column(F) Use a scalar CLR UDF to calculate a column and as a criterion inthe WHERE clauseA sample of the results is as follows (time in milliseconds):(295310 row(s) affected)A: 1563(150003 row(s) affected)B: 906(295310 row(s) affected)C: 2703(150003 row(s) affected)D: 2533(295310 row(s) affected)E: 2060(150003 row(s) affected)F: 2190The scalar CLR UDF function was significantly faster than the classicscalar UDF, even for this very simple function. Perhaps a more complexfunction would have shown even a greater difference. Based on this, Imust conclude that Erland was right. Of course, it's still faster tostick with basic built-in functions like CASE.In another test, I decided to run some queries to compare built-inaggregates vs. a couple of simple CLR aggregates as follows:(G) Calculate averages by group using the built-in AVG aggregate(H) Calculate averages by group using a CLR aggregate that similatesthe built-in AVG aggregate(I) Calculate a "trimmed" average by group (average excluding highestand lowest values) using built-in aggregates(J) Calculate a "trimmed" average by group using a CLR aggregatespecially designed for this purposeA sample of the results is as follows (time in milliseconds):(59 row(s) affected)G: 313(59 row(s) affected)H: 890(59 row(s) affected)I: 216(59 row(s) affected)J: 846It seems that the CLR aggregates came with a significant performancepenalty over the built-in aggregates. Perhaps they would pay off if Iwere attempting a very complex type of aggregation. However, at thispoint I'm going to shy away from using these unless I can't find a wayto do the calculation with standard SQL.In a way, I'm happy that basic SQL still seems to be the fastest way toget things done. With the addition of the new CLR functionality, Isuspect that MS may be giving us developers enough rope to comfortablyhang ourselves if we're not careful.Bill E.Hollywood, FL------------------------------------------------------------------------- table TestAssignment, about 300,000 rowsCREATE TABLE [dbo].[TestAssignment]([TestAssignmentID] [int] NOT NULL,[ProductID] [int] NULL,[PercentPassed] [int] NULL,CONSTRAINT [PK_TestAssignment] PRIMARY KEY CLUSTERED([TestAssignmentID] ASC)--Scalar UDF in SQLCREATE FUNCTION [dbo].[fnIsEven](@intValue int)RETURNS bitASBEGINDeclare @bitReturnValue bitIf @intValue % 2 = 0Set @bitReturnValue=1ElseSet @bitReturnValue=0RETURN @bitReturnValueEND--Scalar CLR UDF/*using System;using System.Data;using System.Data.SqlClient;using System.Data.SqlTypes;using Microsoft.SqlServer.Server;public partial class UserDefinedFunctions{[Microsoft.SqlServer.Server.SqlFunction(IsDetermini stic=true,IsPrecise=true)]public static SqlBoolean IsEven(SqlInt32 value){if(value % 2 == 0){return true;}else{return false;}}};*/--Test #1--Scenario A - Query with calculated column--SELECT TestAssignmentID,CASE WHEN TestAssignmentID % 2=0 THEN 1 ELSE 0 END ASCalcColumnFROM TestAssignment--Scenario B - Query with calculated column as criterion--SELECT TestAssignmentID,CASE WHEN TestAssignmentID % 2=0 THEN 1 ELSE 0 END ASCalcColumnFROM TestAssignmentWHERE CASE WHEN TestAssignmentID % 2=0 THEN 1 ELSE 0 END=1--Scenario C - Query using scalar UDF--SELECT TestAssignmentID,dbo.fnIsEven(TestAssignmentID) AS CalcColumnFROM TestAssignment--Scenario D - Query using scalar UDF as crierion--SELECT TestAssignmentID,dbo.fnIsEven(TestAssignmentID) AS CalcColumnFROM TestAssignmentWHERE dbo.fnIsEven(TestAssignmentID)=1--Scenario E - Query using CLR scalar UDF--SELECT TestAssignmentID,dbo.fnIsEven_CLR(TestAssignmentID) AS CalcColumnFROM TestAssignment--Scenario F - Query using CLR scalar UDF as crierion--SELECT TestAssignmentID,dbo.fnIsEven_CLR(TestAssignmentID) AS CalcColumnFROM TestAssignmentWHERE dbo.fnIsEven(TestAssignmentID)=1--CLR Aggregate functions/*using System;using System.Data;using System.Data.SqlClient;using System.Data.SqlTypes;using Microsoft.SqlServer.Server;[Serializable][Microsoft.SqlServer.Server.SqlUserDefinedAggregate (Format.Native)]public struct Avg{public void Init(){this.numValues = 0;this.totalValue = 0;}public void Accumulate(SqlDouble Value){if (!Value.IsNull){this.numValues++;this.totalValue += Value;}}public void Merge(Avg Group){if (Group.numValues > 0){this.numValues += Group.numValues;this.totalValue += Group.totalValue;}}public SqlDouble Terminate(){if (numValues == 0){return SqlDouble.Null;}else{return (this.totalValue / this.numValues);}}// private accumulatorsprivate int numValues;private SqlDouble totalValue;}[Serializable][Microsoft.SqlServer.Server.SqlUserDefinedAggregate (Format.Native)]public struct TrimmedAvg{public void Init(){this.numValues = 0;this.totalValue = 0;this.minValue = SqlDouble.MaxValue;this.maxValue = SqlDouble.MinValue;}public void Accumulate(SqlDouble Value){if (!Value.IsNull){this.numValues++;this.totalValue += Value;if (Value < this.minValue)this.minValue = Value;if (Value > this.maxValue)this.maxValue = Value;}}public void Merge(TrimmedAvg Group){if (Group.numValues > 0){this.numValues += Group.numValues;this.totalValue += Group.totalValue;if (Group.minValue < this.minValue)this.minValue = Group.minValue;if (Group.maxValue > this.maxValue)this.maxValue = Group.maxValue;}}public SqlDouble Terminate(){if (this.numValues < 3)return SqlDouble.Null;else{this.numValues -= 2;this.totalValue -= this.minValue;this.totalValue -= this.maxValue;return (this.totalValue / this.numValues);}}// private accumulatorsprivate int numValues;private SqlDouble totalValue;private SqlDouble minValue;private SqlDouble maxValue;}*/--Test #2--Scenario G - Average Query using built-in aggregate--SELECT ProductID, Avg(Cast(PercentPassed AS float))FROM TestAssignmentGROUP BY ProductIDORDER BY ProductID--Scenario H - Average Query using CLR aggregate--SELECT ProductID, dbo.Avg_CLR(Cast(PercentPassed AS float)) AS AverageFROM TestAssignmentGROUP BY ProductIDORDER BY ProductID--Scenario I - Trimmed Average Query using built in aggregates/setoperations--SELECT A.ProductID,CaseWhen B.CountValues<3 Then NullElse Cast(A.Total-B.MaxValue-B.MinValue ASfloat)/Cast(B.CountValues-2 As float)End AS AverageFROM(SELECT ProductID, Sum(PercentPassed) AS TotalFROM TestAssignmentGROUP BY ProductID) ALEFT JOIN(SELECT ProductID,Max(PercentPassed) AS MaxValue,Min(PercentPassed) AS MinValue,Count(*) AS CountValuesFROM TestAssignmentWHERE PercentPassed Is Not NullGROUP BY ProductID) BON A.ProductID=B.ProductIDORDER BY A.ProductID--Scenario J - Trimmed Average Query using CLR aggregate--SELECT ProductID, dbo.TrimmedAvg_CLR(Cast(PercentPassed AS real)) ASAverageFROM TestAssignmentGROUP BY ProductIDORDER BY ProductID
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Feb 4, 2007
Hi I have a problem which I’m not sure how to resolve!
I have a aspx with two drop down list;
1st one has (annual salary, daily salary, hourly rate)
2nd one has ( 0-4999, 5000-9999......)
The second one is generated by the value selected in the first one.
I have stored the values in a table (as nvarchar) and used sqldatasource to run a query, which matches the entry in the first box and fill the second drop down list accordingly.
How ever I have a problem, when I want some one to search for example; an average salary of 5000-9999, it should output entry's that have a similar daily rate, and hourly rate...
But I’m not sure how I can accomplish this, does any one have any ideas!
Many thanks
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Jun 22, 2005
Hi,the Soundex search words that sounds similar.Does MS SQL Server has some function to make some intuitive search?For example, for search term database, it should return rows that contains: "database" word, but also rows that contains "Oracle", "MySQL", "MS SQL" etc. terms.
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Jan 7, 2002
Can someone tell me if this is a SQL Server bug? I tried this in both
version 7 and 2000, the results are the same.
DECLARE @timeA DATETIME
DECLARE @timeB DATETIME
DECLARE @msDiff INT
SET @timeA = GETDATE()
SET @msDiff = 0
WHILE @msDiff <= 10
BEGIN
SET @timeB = DATEADD(ms,@msDiff,@timeA)
PRINT 'If adding ' + CONVERT(VARCHAR,@msDiff) + ' milliseconds to Time
B, then Time B is ' + CONVERT(VARCHAR,DATEDIFF(ms,@timeA,@timeB)) + '
millisecond greater than Time A'
SET @msDiff = @msDiff + 1
END
This seems like a serious bug if an application depends heavily on
milliseconds comparison.
Thanks,
Aiden
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Sep 6, 2001
I am sorry to continue bothering this forum with the
continuation of this question but here it is. And thank you to Craig for
giving me the equivalent of the function Date() in SQL. Now when I pull from
the SQl Server with the old ASP pull with this statement using GETDATE()
strSQLQuery1 = "SELECT * FROM cocoitem WHERE CustNum = '" & strcustnum & "' AND (stat = 'O' OR stat = 'F') AND [due-date] > DateAdd('yyyy', -1, GETDATE()) Order By [cust-item], [due-date] ASC;"
I get this:
Microsoft OLE DB Provider for SQL Server error '80040e14'
Invalid parameter 1 specified for dateadd.
/scripts/order/shippingstatsopen.asp, line 28
So I guess I need to also know the equivalent of DateAdd . Also, does anyone
know of a Access Function to Sql 7 function comparison chart so I can write
for the new database comprehendingly?
Thank you very much for your help in advance.
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Jul 26, 2000
Hi,
I am new to this, SQL Server. I hv worked in Oracle. Now I am learning 'SQL Server'. In Oracle, it has features like Packages and functions (PL/SQL), like that in SQL Server, is there any facility available?.
thanks in advance.
srini
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Apr 10, 2002
Do we have any builtin functions in SQL Server for certain financial calculations. For eg., like the PV, FV functions in VB
If not, how else do we achieve this thru' a SQL Server stored procedure?
Thanks in advance,
Siva
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Apr 12, 2007
Hi,
I am still learning the bells and whistles of SQL Server and was wondering if I can find out the query that caused my trigger to fire, so that I can log this in another audit table.
I have an If Update ( My_Column ) trigger set up, where once an update happens to My_Column much information from the updated row along with , Host_Name and App_Name is sent. I also want to send the exact query used to update it, any ideas?
Any comments, suggestions will be greatly appreciated.
Thanks,
Kartik
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Apr 20, 2006
I'm moving some queries out of an Access front end and creating views out ofthem in SQL Server 2005 express. In some of the numeric fields, I use nzquite often, ( i.e. nz([MyField],0)) to return a zero if the field is null.Is there anything equivalent to this in SQL Server? Right now I'm usingCASE WHEN ... but it seems like an awful lot of script to write just toreplace null with a zero.Any help would be greatly appreciated.Thanks!
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Jul 20, 2005
I would like to know how to write a function that will go through datain a column and change it. For example, I have a column of ISBN's forbooks, and the ISBN's have a period in them randomly distributed. I'dlike to pull the period out.Any help I can get will be appriciated.Thanks,Bill
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Jul 20, 2005
Hi,Do any versions of SQL Server support the following functions, asthey appear in the Oracle Database:-1) XMLElement2) XMLAttributes3) XMLForestThanks in Advance for your replyByeAmardeep Verma
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Aug 17, 2006
Hi everybody,
Does anyone have financial functions to be run in SQL Server 2000? For example, future value, interest rate, payments, and so on. Or where can I find them on Internet?
Thanks in advance
Jaime
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Nov 15, 2006
I'm upsizing MS-Access to SQL Server 2005.
I need to convert the following functions:
TRANSFORM
PIVOT
FORMAT
MID
Are there any similar functions in SQL Server?
Also I have a query as follows:
SELECT Mid$([AccountNumber],3,8) AS [Account#], Format([checkamount]*100,"000000000") AS Amount, IIf(IsNull([statusdate])," ",Format([statusdate],"yyyymmdd")) AS [Date]
FROM tblResult;
How do I convert this in SQL Server query?
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Nov 4, 2004
hai,
I have 3 fields in my table say (F1, F2, F3). I want to get the max value out of the three fields for each row. I can create a user-defined function which accepts 3 arguments and then return the max value if i am using SQL Server 2000. But now i am using only SQL Server 7.0 (it does not support user-defined functions :confused: )
So any one could kindly let me know how could i do it in SQL Server 7.0
Thnks in advance
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Aug 20, 2007
Hi,
I saw in some websites that there are functions freeze and thaw in SQL server.I want to freeze the SQL server for some time and then use the thaw to unfreeze.I want to know how it could be done in SQL server 2005
Thanks in Advance
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Jul 20, 2005
Hi all!!Does anybody know how I can create a function in SQL 7.0?? I have tocreate functions that return a value that can be used in a selectstatement. I think SQL Server version 7.0 doesn't support CREATEFUNCTION, does it?Ex:Select MyFunction(Parameter)From MyTableThanks a lot,
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Oct 4, 2006
Hi
I am trying to build a tree similar to the one in SQL Server Management Studio for the system functions in the SQL language.
I would like to group them by type (e.g. string functions) and display information about the parameters and return types, etc.
Is there a way to get these programmatically? I would like to avoid typing them out by hand.
Thanks
Chris
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Apr 23, 2008
Hi ,
I have a question about calling functions in SQl Server 2005.
Let's say that I have created as a dbo a function called Calculations.
If I want to call it from T-SQL I will write Select dbo.Calculations (arguments if any) etc.
My question is If I can skip the "dbo" part. Call the function without using the dbo .
Can I do that ?
Should I create the function as supervisor ? Does Sql Server has a property or something which will allow me to call the function without using the "dbo." ?
Thank you
zkar
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May 26, 2015
I've below value in a column with data type - TEXT
QU 221025U2V/AN G-DT DL A 5 1A- 11,5,SF,230,30162,LZ,2,118,0,0,10170,25,06
This text value has some special characters in it. and I could not paste the exact value as this text box is not allowing me to do so. So, for reference I've attached a screenshot (Capture.png) of the value.
I want to fetch last two values from this text i.e. 25 and 06. (It can be anything like 56R,06T but will be the last two values separated by comma)...
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May 31, 2015
How do I use the CAST or CONVERT function in the code below, I require a third column (named Diff) which Minus the StartTime from the EndTime and the result is outputted in the third column (named Diff).
Calculation: @Diff = (@EndTime - @StartTime)
I still want the variables (@StartTime and @EndTime) to remain as nvarchar.
The code:
DECLARE @StartTime nvarchar(10) = '12:10';
DECLARE @EndTime nvarchar(10) = '12:30';
DECLARE @Diff time(1) = '00:00';
SELECT @StartTime AS '@StartTime', @EndTime AS '@EndTimes', @Diff AS '@Diff';
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Jul 20, 2005
Hi all,What are the fundamentals (fundamental functions) that most small tomedium sized organizations that use MS SQL Server 7 or 2000 valuemost?What's your insight?OK, here's my biased definition of small to medium sized organization,annual revenue from 20m to 300m.Thanks.DL
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Mar 17, 2008
Hi , how to create user defined functions in sql server 2005 to retrive data from multiple tables in asp.net....... Thank U!
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Jul 14, 2015
here's an example of what I am trying to do.
--Exec Database.Employees
--Use Database
--Go
--Create PROCEDURE AEM.TempTable
--AS
--BEGIN
--Select * into #emptemp From Database.Employees
--End
--Select * From #emptemp
Is something like this possible? I can get the EXEC to run the "Select * into #emptemp From Database.Employees" statement, but when I try to use the temp table it doesnt see it.
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Aug 30, 2006
Dear fellow developers,
I have successfully developed a Transact-SQL stored procedure which calls a CLR function, which calls a web service. I am using a Visual Studio 2005 SQL Server Project to perform the necessary magic.
Is there a neat way to deploy this stuff to a production server?
It is bad enough deploying the sp and function, but the web server proxy also needs to be changed to refer to the production web service.
This all looks very nasty and complicated.
Am I missing something?
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Feb 16, 2007
I have a SQLDataSource that gets it's data from a SQL 2000 database table. I have configured it to generate the Update/Delete commands, which look correct. I then have a GridView that is using this SqlDataSource to show the data with "Edit" & "Delete" buttons (the default ones from the GridView).
My problem is that while all commands (Edit, Delete) work on my local server, they do NOT work on my live server. In my connection string, I specifiy a username and password like this:
<add name="Project_Management.My.MySettings.WebReportsConnectionString"
connectionString="Data Source=Karlweb;Initial Catalog=WebReport;Persist Security Info=True;User ID=VbUser;Password=VbUser"
providerName="System.Data.SqlClient" />
I have access to change the permissions on my production server, so I gave this "VbUser" every allow permission I could find and still I could not Edit or Delete records. What I mean by they "do not work" is that when I click the Edit button, the GridView switches to edit mode, but when I click Update, the changes are not written. When I click the Delete button, the page just refreshes and the record is not deleted.
As this is working on my local server, I think the problem lies in some permission or configuration of the server. Does anyone have any suggestions of where I could look or what to change?
Thank you!
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Feb 7, 2006
User-Defined string Functions MS SQL Server 2005 Transact-SQL SQLCLR (VB. Net, C#.Net, C++. Net)
Ladies and Gentlemen,
I am pleased to offer, free of charge, the following string functions MS SQL Server 2005 Transact-SQL SQLCLR (VB. Net, C#.Net, C++. Net):
AT(): Returns the beginning numeric position of the nth occurrence of a character expression within another character expression, counting from the leftmost character.
RAT(): Returns the numeric position of the last (rightmost) occurrence of a character string within another character string.
OCCURS(): Returns the number of times a character expression occurs within another character expression (including overlaps).
OCCURS2(): Returns the number of times a character expression occurs within another character expression (excluding overlaps).
PADL(): Returns a string from an expression, padded with spaces or characters to a specified length on the left side.
PADR(): Returns a string from an expression, padded with spaces or characters to a specified length on the right side.
PADC(): Returns a string from an expression, padded with spaces or characters to a specified length on the both sides.
CHRTRAN(): Replaces each character in a character expression that matches a character in a second character expression with the corresponding character in a third character expression.
STRTRAN(): Searches a character expression for occurrences of a second character expression, and then replaces each occurrence with a third character expression. Unlike a built-in function Replace, STRTRAN has three additional parameters.
STRFILTER(): Removes all characters from a string except those specified.
GETWORDCOUNT(): Counts the words in a string.
GETWORDNUM(): Returns a specified word from a string.
GETALLWORDS(): Inserts the words from a string into the table.
PROPER(): Returns from a character expression a string capitalized as appropriate for proper names.
RCHARINDEX(): Similar to the Transact-SQL function Charindex, with a Right search.
ARABTOROMAN(): Returns the character Roman numeral equivalent of a specified numeric expression (from 1 to 3999).
ROMANTOARAB(): Returns the number equivalent of a specified character Roman numeral expression (from I to MMMCMXCIX).
AT, PADL, PADR, CHRTRAN, PROPER: Similar to the Oracle functions PL/SQL INSTR, LPAD, RPAD, TRANSLATE, INITCAP.
Plus, there are CHM files in English, French, Spanish, German and Russian.
Plus, there are versions for MS SQL SERVER, SYBASE ASA, DB2, Oracle.
More than 8000 people have already downloaded my functions. I hope you will find them useful as well.
For more information about string UDFs MS SQL Server 2005 Transact-SQL SQLCLR (VB. Net, C#.Net, C++. Net) please visit the
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Please, download the file
http://www.universalthread.com/wconnect/wc.dll?LevelExtreme~2,2,29527
With the best regards.
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Mar 17, 2015
How can I find calls which do not exist in stored procedures and functions?We have many stored procedures, sometimes a stored procedure or function which is called does not exist. Is there a query/script or something that I can identify which stored procedures do not 'work' and which procedure/ function they are calling?I am searching for stored procedures and functions which are still called, but do not exist in the current database.
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Jul 14, 2015
I am creating mateialized view but it is failing with error that it can't be schema bound.
The query I am working to create materialized view are having joins with different tables and function.
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May 17, 2007
Hi everybody,
I would like to use MatLab built-in statistical functions (beta, gamma, normal, etc.) from inside a SQLServer stored proceudre. Does anyone know if possible? (Of course, If so, where can I get documentation for doing this?)
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Aug 17, 2011
We have few C# binaries that contains definition of CLR functions, and one stored procedure to install / create them in our database. Recently when dropping and recreating the CLR function using our stored procedure, it failed with below error:
Error/info returned: [Microsoft][ODBC SQL Server Driver][SQL Server]This server is Information Protection configured. Only the sql server web application can be used for this function. ([URL])[Microsoft][ODBC SQL Server Driver][SQL Server]The transaction ended in the trigger. The batch has been aborted.
Basically our stored procedure has standard steps to create asymmetric key for each of our C# binary and create login for that key and then grant unsafe assembly permissions to those logins.
It sets show advanced options, clr enabled, and ole automation procedures options. It then using create assembly (for each c# binary with permission_set = unsafe) and create function constructs to create clr functions in SQL server.
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Aug 22, 2014
If you use the LEFT() function for example it provides intellisense support for some of the required parameters.
Is there a way to get that same descriptive text in user defined functions?
Some comment block you define when creating the function?
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