David Troy the person who brought you twittervision has done it again this time with flickr. Check out flickrvision
Who needs animated desktops anymore? Be warned it can get very addictive.
Tuesday, May 15, 2007
Monday, May 14, 2007
Google: A Girl's Best Friend
Type these searches into a Google search box
she created
she invented
she discovered
she debugged
Look at what Google suggests.
she created
she invented
she discovered
she debugged
Look at what Google suggests.
Make Your Case Sensitive Searches 1000 Times Faster
I had an case sensitive update query that ran in about 9 minutes. Since it was a case sensitive query it did an index scan not an index seek.
Once I modified my WHERE clause the update took a little less than 3 seconds
Let's get started and see what I did
First create this table
CREATE TABLE #CaseSensitiveSearchTemp (Val CHAR(1))
INSERT #CaseSensitiveSearchTemp VALUES('A')
INSERT #CaseSensitiveSearchTemp VALUES('B')
INSERT #CaseSensitiveSearchTemp VALUES('C')
INSERT #CaseSensitiveSearchTemp VALUES('D')
INSERT #CaseSensitiveSearchTemp VALUES('E')
INSERT #CaseSensitiveSearchTemp VALUES('F')
INSERT #CaseSensitiveSearchTemp VALUES('G')
INSERT #CaseSensitiveSearchTemp VALUES('H')
Now we will insert some lowercase characters
INSERT #CaseSensitiveSearchTemp
SELECT LOWER(Val) FROM #CaseSensitiveSearchTemp
Now we will create our real table which will have 65536 rows
CREATE TABLE CaseSensitiveSearch (Val VARCHAR(50))
We will do a couple of cross joins to generate the data for our queries
INSERT CaseSensitiveSearch
SELECT t1.val + t2.val + t3.val + t4.val
FROM #CaseSensitiveSearchTemp t1
CROSS JOIN #CaseSensitiveSearchTemp t2
CROSS JOIN #CaseSensitiveSearchTemp t3
CROSS JOIN #CaseSensitiveSearchTemp t4
This should give you 65536 rows
SELECT * FROM CaseSensitiveSearch
Create an index on the table
CREATE INDEX IX_SearchVal ON CaseSensitiveSearch(Val)
This is how you do a case sensitive search
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'ABCD' COLLATE SQL_Latin1_General_CP1_CS_AS
Now hit CRLK + K (SQL Server 2000) or CRLK + M(SQL Server 2005)
run these 2 queries in one batch by highlighting them both and hitting F5
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'ABCD' COLLATE SQL_Latin1_General_CP1_CS_AS
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'ABCD' COLLATE SQL_Latin1_General_CP1_CS_AS
AND Val LIKE 'ABCD'
Look at the execution plan, I get 98.71% for the first query and 1.29% for the second query. Just by adding the AND condition SQL server is able to do an index seek and run the query many times faster
Now try it with a lowercase a
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'aBCD' COLLATE SQL_Latin1_General_CP1_CS_AS
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'aBCD' COLLATE SQL_Latin1_General_CP1_CS_AS
AND Val LIKE 'aBCD'
You see it all works without a problem, the correct result is returned
Once I modified my WHERE clause the update took a little less than 3 seconds
Let's get started and see what I did
First create this table
CREATE TABLE #CaseSensitiveSearchTemp (Val CHAR(1))
INSERT #CaseSensitiveSearchTemp VALUES('A')
INSERT #CaseSensitiveSearchTemp VALUES('B')
INSERT #CaseSensitiveSearchTemp VALUES('C')
INSERT #CaseSensitiveSearchTemp VALUES('D')
INSERT #CaseSensitiveSearchTemp VALUES('E')
INSERT #CaseSensitiveSearchTemp VALUES('F')
INSERT #CaseSensitiveSearchTemp VALUES('G')
INSERT #CaseSensitiveSearchTemp VALUES('H')
Now we will insert some lowercase characters
INSERT #CaseSensitiveSearchTemp
SELECT LOWER(Val) FROM #CaseSensitiveSearchTemp
Now we will create our real table which will have 65536 rows
CREATE TABLE CaseSensitiveSearch (Val VARCHAR(50))
We will do a couple of cross joins to generate the data for our queries
INSERT CaseSensitiveSearch
SELECT t1.val + t2.val + t3.val + t4.val
FROM #CaseSensitiveSearchTemp t1
CROSS JOIN #CaseSensitiveSearchTemp t2
CROSS JOIN #CaseSensitiveSearchTemp t3
CROSS JOIN #CaseSensitiveSearchTemp t4
This should give you 65536 rows
SELECT * FROM CaseSensitiveSearch
Create an index on the table
CREATE INDEX IX_SearchVal ON CaseSensitiveSearch(Val)
This is how you do a case sensitive search
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'ABCD' COLLATE SQL_Latin1_General_CP1_CS_AS
Now hit CRLK + K (SQL Server 2000) or CRLK + M(SQL Server 2005)
run these 2 queries in one batch by highlighting them both and hitting F5
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'ABCD' COLLATE SQL_Latin1_General_CP1_CS_AS
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'ABCD' COLLATE SQL_Latin1_General_CP1_CS_AS
AND Val LIKE 'ABCD'
Look at the execution plan, I get 98.71% for the first query and 1.29% for the second query. Just by adding the AND condition SQL server is able to do an index seek and run the query many times faster
Now try it with a lowercase a
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'aBCD' COLLATE SQL_Latin1_General_CP1_CS_AS
SELECT * FROM CaseSensitiveSearch
WHERE Val = 'aBCD' COLLATE SQL_Latin1_General_CP1_CS_AS
AND Val LIKE 'aBCD'
You see it all works without a problem, the correct result is returned
Sunday, May 13, 2007
Great Programming Quote
"pasting code from the internet into production code is like chewing gum found in the street."
None of use pasted straight into production code from a newsgroup/forum right? <g>
None of use pasted straight into production code from a newsgroup/forum right? <g>
Thursday, May 10, 2007
Why Does OBJECTPROPERTY Have A TableIsFake Property?
You can run the following function (OBJECTPROPERTY(object_id, N'TableIsFake') ) on an object and it will return 1 if the table is fake and 0 otherwise.
What does BOL say? The table is not real. It is materialized internally on demand by SQL Server. So does this mean it is a table valued function?
Well one way to find out.
Run this
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECT_DEFINITION(object_id) as object_definition
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') = 1
ORDER BY type_desc, name;
GO
And we get back a table valued function in the resultset
name: ufnGetContactInformation
object_id: 439672614
type_desc: SQL_TABLE_VALUED_FUNCTION
object_definition; CREATE FUNCTION .... (I truncated the rest)
Now create another function
CREATE FUNCTION [dbo].[ufnGetSomeTable]()
RETURNS @SomeTable TABLE (
[ContactID] int PRIMARY KEY NOT NULL)
BEGIN
INSERT @SomeTable VALUES(1)
INSERT @SomeTable VALUES(2)
RETURN
END
GO
Run this to make sure it works
SELECT * FROM ufnGetSomeTable()
run the same query again
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECT_DEFINITION(object_id) as object_definition
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') = 1
ORDER BY type_desc, name;
GO
And yes we get 2 functions back ;-)
Now we will create some temp tables to see if those are fake
CREATE TABLE #testFakeTable1234 (id int)
CREATE TABLE ##testFakeTable1234 (id int)
Now run this and you will see that those are real and not fake
USE tempdb;
GO
SELECT name, object_id, type_desc,OBJECTPROPERTY(object_id, N'TableIsFake') as IsFake
FROM sys.objects
WHERE name LIKE '#testFakeTable1234%'
OR name LIKE '##testFakeTable1234%'
ORDER BY type_desc, name;
GO
DROP TABLE #testFakeTable1234,##testFakeTable1234
Now create this function
USE AdventureWorks;
GO
CREATE FUNCTION dbo.fn_nums(@n AS BIGINT) RETURNS TABLE
AS
RETURN
WITH
L0 AS(SELECT 1 AS c UNION ALL SELECT 1) ,
Nums AS(SELECT ROW_NUMBER() OVER(ORDER BY c) AS n FROM L0)
SELECT n FROM Nums WHERE n <= @n;
Test it out to make sure it works
SELECT * FROM dbo.fn_nums(2)
Run the following 2 queries
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECTPROPERTY(object_id, N'TableIsFake') IsFake, OBJECTPROPERTY(object_id, N'IsTableFunction') IsTableFunction
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') <> OBJECTPROPERTY(object_id, N'IsTableFunction')
ORDER BY type_desc, name;
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECTPROPERTY(object_id, N'TableIsFake') IsFake,
OBJECTPROPERTY(object_id, N'IsInlineFunction') IsInlineFunction
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') <> OBJECTPROPERTY(object_id, N'IsInlineFunction')
ORDER BY type_desc, name;
So a SQL_table valued function is a fake table but a SQL inline table valued function is not a fake table????
So there you have it, confused? Good!
What does BOL say? The table is not real. It is materialized internally on demand by SQL Server. So does this mean it is a table valued function?
Well one way to find out.
Run this
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECT_DEFINITION(object_id) as object_definition
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') = 1
ORDER BY type_desc, name;
GO
And we get back a table valued function in the resultset
name: ufnGetContactInformation
object_id: 439672614
type_desc: SQL_TABLE_VALUED_FUNCTION
object_definition; CREATE FUNCTION .... (I truncated the rest)
Now create another function
CREATE FUNCTION [dbo].[ufnGetSomeTable]()
RETURNS @SomeTable TABLE (
[ContactID] int PRIMARY KEY NOT NULL)
BEGIN
INSERT @SomeTable VALUES(1)
INSERT @SomeTable VALUES(2)
RETURN
END
GO
Run this to make sure it works
SELECT * FROM ufnGetSomeTable()
run the same query again
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECT_DEFINITION(object_id) as object_definition
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') = 1
ORDER BY type_desc, name;
GO
And yes we get 2 functions back ;-)
Now we will create some temp tables to see if those are fake
CREATE TABLE #testFakeTable1234 (id int)
CREATE TABLE ##testFakeTable1234 (id int)
Now run this and you will see that those are real and not fake
USE tempdb;
GO
SELECT name, object_id, type_desc,OBJECTPROPERTY(object_id, N'TableIsFake') as IsFake
FROM sys.objects
WHERE name LIKE '#testFakeTable1234%'
OR name LIKE '##testFakeTable1234%'
ORDER BY type_desc, name;
GO
DROP TABLE #testFakeTable1234,##testFakeTable1234
Now create this function
USE AdventureWorks;
GO
CREATE FUNCTION dbo.fn_nums(@n AS BIGINT) RETURNS TABLE
AS
RETURN
WITH
L0 AS(SELECT 1 AS c UNION ALL SELECT 1) ,
Nums AS(SELECT ROW_NUMBER() OVER(ORDER BY c) AS n FROM L0)
SELECT n FROM Nums WHERE n <= @n;
Test it out to make sure it works
SELECT * FROM dbo.fn_nums(2)
Run the following 2 queries
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECTPROPERTY(object_id, N'TableIsFake') IsFake, OBJECTPROPERTY(object_id, N'IsTableFunction') IsTableFunction
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') <> OBJECTPROPERTY(object_id, N'IsTableFunction')
ORDER BY type_desc, name;
USE AdventureWorks;
GO
SELECT name, object_id, type_desc,OBJECTPROPERTY(object_id, N'TableIsFake') IsFake,
OBJECTPROPERTY(object_id, N'IsInlineFunction') IsInlineFunction
FROM sys.objects
WHERE OBJECTPROPERTY(object_id, N'TableIsFake') <> OBJECTPROPERTY(object_id, N'IsInlineFunction')
ORDER BY type_desc, name;
So a SQL_table valued function is a fake table but a SQL inline table valued function is not a fake table????
So there you have it, confused? Good!
Wednesday, May 09, 2007
Some Katmai (SQL Server 2008?) News
Microsoft issued a Katmai press release, you can read the full press release here: http://www.microsoft.com/presspass/press/2007/may07/05-09KatmaiPR.mspx?rss_fdn=Press%20Releases
Here are the important parts:
Scheduled to be available in 2008, SQL Server “Katmai” will deliver on Microsoft’s overall data platform vision to meet the needs of the coming data explosion and the next generation of data-driven applications.
Data Platform to Power Business Insights Regardless of Size or Budget
SQL Server “Katmai” is designed to do the following:
• Provide a scalable and reliable platform with advanced security technology for even the most demanding applications
• Reduce the time and cost of managing data infrastructure with innovative policy-based management
Redefining Pervasive Insight
SQL Server “Katmai” brings powerful BI capabilities and valuable data even closer to every user:
• Empowers users to easily consume information due to increased integration with front-end tools in the 2007 Microsoft Office system, including Office Excel® 2007, Excel Services, Office SharePoint® Server and Office PerformancePoint Server 2007
• Provides reports of any size or complexity internally within organizations and externally to partners and suppliers
• Aligns corporate decision-making by collaborating on key analysis and reports within Microsoft Office SharePoint Server
• Integrates all relevant data within the enterprise into a scalable and comprehensive data warehouse platform
Dynamic Development for Data Management Solutions
SQL Server “Katmai” offers these features for developers:
• Provides an integrated development environment with Microsoft Visual Studio® and .NET Framework that will accelerate development of new applications with a higher level of data abstraction
• Enables developers to synchronize data from virtually any device to the central data store
Beyond Relational Data
SQL Server “Katmai” enables users to do the following:
• Manage any type of data including relational data, documents, geographic information and XML
• Work with a consistent set of services and tools
Availability
SQL Server “Katmai” is scheduled to be delivered in 2008. More information is available at http://www.microsoft.com/sql/prodinfo/futureversion/default.mspx
Download the Katmai data sheet here: http://download.microsoft.com/download/B/F/2/BF24C54E-5635-4C79-AFB4-0C3F840E79F4/Katmai_datasheet_Final.pdf
Here are the important parts:
Scheduled to be available in 2008, SQL Server “Katmai” will deliver on Microsoft’s overall data platform vision to meet the needs of the coming data explosion and the next generation of data-driven applications.
Data Platform to Power Business Insights Regardless of Size or Budget
SQL Server “Katmai” is designed to do the following:
• Provide a scalable and reliable platform with advanced security technology for even the most demanding applications
• Reduce the time and cost of managing data infrastructure with innovative policy-based management
Redefining Pervasive Insight
SQL Server “Katmai” brings powerful BI capabilities and valuable data even closer to every user:
• Empowers users to easily consume information due to increased integration with front-end tools in the 2007 Microsoft Office system, including Office Excel® 2007, Excel Services, Office SharePoint® Server and Office PerformancePoint Server 2007
• Provides reports of any size or complexity internally within organizations and externally to partners and suppliers
• Aligns corporate decision-making by collaborating on key analysis and reports within Microsoft Office SharePoint Server
• Integrates all relevant data within the enterprise into a scalable and comprehensive data warehouse platform
Dynamic Development for Data Management Solutions
SQL Server “Katmai” offers these features for developers:
• Provides an integrated development environment with Microsoft Visual Studio® and .NET Framework that will accelerate development of new applications with a higher level of data abstraction
• Enables developers to synchronize data from virtually any device to the central data store
Beyond Relational Data
SQL Server “Katmai” enables users to do the following:
• Manage any type of data including relational data, documents, geographic information and XML
• Work with a consistent set of services and tools
Availability
SQL Server “Katmai” is scheduled to be delivered in 2008. More information is available at http://www.microsoft.com/sql/prodinfo/futureversion/default.mspx
Download the Katmai data sheet here: http://download.microsoft.com/download/B/F/2/BF24C54E-5635-4C79-AFB4-0C3F840E79F4/Katmai_datasheet_Final.pdf
Monday, May 07, 2007
Three Ways To Return All Rows That Contain Uppercase Characters Only
How do you select all the rows that contain uppercase characters only? There sre three ways to do this
1 Compare with BINARY_CHECKSUM
2 Use COLLATE
3 Cast to varbinary
Let's first create the table and also some test data
CREATE TABLE #tmp ( x VARCHAR(10) NOT NULL )
INSERT INTO #tmp
SELECT 'Word' UNION ALL
SELECT 'WORD' UNION ALL
SELECT 'ABC' UNION ALL
SELECT 'AbC' UNION ALL
SELECT 'ZxZ' UNION ALL
SELECT 'ZZZ' UNION ALL
SELECT 'word'
if we want only the uppercase columns then this is supposed to be our output
WORD
ABC
ZZZ
Let's get started, first up is BINARY_CHECKSUM
SELECT x
FROM #TMP
WHERE BINARY_CHECKSUM(x) = BINARY_CHECKSUM(UPPER(x))
Second is COLLATE
SELECT x
FROM #TMP
WHERE x = UPPER(x) COLLATE SQL_Latin1_General_CP1_CS_AS
Third is Cast to varbinary
SELECT x
FROM #TMP
WHERE CAST(x AS VARBINARY(10)) = CAST(UPPER(x) AS VARBINARY(10))
Of course if you database is already case sensitive you can just do the following
SELECT x
FROM #TMP
WHERE UPPER(x) = x
That will work, how do you find out what collation was used when your database was created? You can use DATABASEPROPERTYEX for that. I use the model DB here because when you create a new DB by default it inherits all the properties from the model DB.
When I run this
SELECT DATABASEPROPERTYEX( 'model' , 'collation' )
I get this as output: SQL_Latin1_General_CP1_CI_AS
What does all that junk mean? Well let's run the following function (yes those are 2 colons ::)
SELECT *
FROM ::fn_helpcollations ()
WHERE NAME ='SQL_Latin1_General_CP1_CI_AS'
The description column contains this info
Latin1-General, case-insensitive, accent-sensitive,
kanatype-insensitive, width-insensitive for Unicode Data,
SQL Server Sort Order 52 on Code Page 1252 for non-Unicode Data
You can read some more info about Selecting a SQL Collation here: http://msdn2.microsoft.com/en-us/library/aa176552(SQL.80).aspx
1 Compare with BINARY_CHECKSUM
2 Use COLLATE
3 Cast to varbinary
Let's first create the table and also some test data
CREATE TABLE #tmp ( x VARCHAR(10) NOT NULL )
INSERT INTO #tmp
SELECT 'Word' UNION ALL
SELECT 'WORD' UNION ALL
SELECT 'ABC' UNION ALL
SELECT 'AbC' UNION ALL
SELECT 'ZxZ' UNION ALL
SELECT 'ZZZ' UNION ALL
SELECT 'word'
if we want only the uppercase columns then this is supposed to be our output
WORD
ABC
ZZZ
Let's get started, first up is BINARY_CHECKSUM
SELECT x
FROM #TMP
WHERE BINARY_CHECKSUM(x) = BINARY_CHECKSUM(UPPER(x))
Second is COLLATE
SELECT x
FROM #TMP
WHERE x = UPPER(x) COLLATE SQL_Latin1_General_CP1_CS_AS
Third is Cast to varbinary
SELECT x
FROM #TMP
WHERE CAST(x AS VARBINARY(10)) = CAST(UPPER(x) AS VARBINARY(10))
Of course if you database is already case sensitive you can just do the following
SELECT x
FROM #TMP
WHERE UPPER(x) = x
That will work, how do you find out what collation was used when your database was created? You can use DATABASEPROPERTYEX for that. I use the model DB here because when you create a new DB by default it inherits all the properties from the model DB.
When I run this
SELECT DATABASEPROPERTYEX( 'model' , 'collation' )
I get this as output: SQL_Latin1_General_CP1_CI_AS
What does all that junk mean? Well let's run the following function (yes those are 2 colons ::)
SELECT *
FROM ::fn_helpcollations ()
WHERE NAME ='SQL_Latin1_General_CP1_CI_AS'
The description column contains this info
Latin1-General, case-insensitive, accent-sensitive,
kanatype-insensitive, width-insensitive for Unicode Data,
SQL Server Sort Order 52 on Code Page 1252 for non-Unicode Data
You can read some more info about Selecting a SQL Collation here: http://msdn2.microsoft.com/en-us/library/aa176552(SQL.80).aspx
Public CTP of Visual Studio Team Edition for Database Professionals first Service Release Available For Download
What is new?
3+4 part name resolution through a new feature called "database references"
File groups and files are now part of the project settings and can be fully parameterize then to fit your deployment needs (this replaces the need for the storage deployment script)
SQLCMD variable support; this is enabled through a new project property page for creating and editing variables that you can then use inside your scripts.
Variables are stored inside the project file and can be mapped to MSBuild properties.
Read more details and get the download from the Data Dude blog
3+4 part name resolution through a new feature called "database references"
File groups and files are now part of the project settings and can be fully parameterize then to fit your deployment needs (this replaces the need for the storage deployment script)
SQLCMD variable support; this is enabled through a new project property page for creating and editing variables that you can then use inside your scripts.
Variables are stored inside the project file and can be mapped to MSBuild properties.
Read more details and get the download from the Data Dude blog
Thursday, May 03, 2007
How Do Spammers/Phishers Get People To Click On A Link With An Email Like This?
Here is an email I received from 'Bank Of America'
Dear Customer, picopaco.
You are receiving this message, due to you protection, Our Online Technical Security Service Foreign IP Spy recently detected that your online account was recently logged on from am 81.206.87.152 without am International Access Code (I.A.C) and from an unregistered computer, which was not verified by the Our Online Service Department.
If you last logged in you online account on Thursday April 5th 2007, by the time 6:45 pm from an Foreign Ip their is no need for you to panic, but if you did log in your account on the above Date and Time, kindly take 2-3 minute of your online banking experince to verify and register your computer now to avoid identity theft, your protection is our future medal.
Verification Link
Notice: You can acess your account from a foreign IP or country by getting am (I.A.C) International Access Code, by contacting our local brances close to you.
I won't even count all the spelling mistakes but what the hell is a Our Online Technical Security Service Foreign IP Spy?
take 2-3 minute of your online banking experince. What?
your protection is our future medal
Hahaha ROFL, What the heck is a future medal?
picopaco? is that like Pico de gallo (yes it is almost Cinco de Mayo)
And here is the kicker; the spammer forgot to include a link. I hope he didn't rent a spambot army because he won't get his money out of this one
Dear Customer, picopaco.
You are receiving this message, due to you protection, Our Online Technical Security Service Foreign IP Spy recently detected that your online account was recently logged on from am 81.206.87.152 without am International Access Code (I.A.C) and from an unregistered computer, which was not verified by the Our Online Service Department.
If you last logged in you online account on Thursday April 5th 2007, by the time 6:45 pm from an Foreign Ip their is no need for you to panic, but if you did log in your account on the above Date and Time, kindly take 2-3 minute of your online banking experince to verify and register your computer now to avoid identity theft, your protection is our future medal.
Verification Link
Notice: You can acess your account from a foreign IP or country by getting am (I.A.C) International Access Code, by contacting our local brances close to you.
I won't even count all the spelling mistakes but what the hell is a Our Online Technical Security Service Foreign IP Spy?
take 2-3 minute of your online banking experince. What?
your protection is our future medal
Hahaha ROFL, What the heck is a future medal?
picopaco? is that like Pico de gallo (yes it is almost Cinco de Mayo)
And here is the kicker; the spammer forgot to include a link. I hope he didn't rent a spambot army because he won't get his money out of this one
Wednesday, May 02, 2007
Nice Silverlight Developer Reference Poster
The supported languages are C#, VB, JScript, IronPython, VB10 (soon), IronRuby (soon). VB10 soon???? VB9 isn't even out yet. LINQ is supported by Silverlight, but support for XLINQ (LINQ to XML) is coming soon. The Opera browser and Windows 2000 will also be supported soon as well as RSS/Atom support.
Get the full size poster here: http://download.microsoft.com/download/f/2/e/f2ecc2ad-c498-4538-8a2c-15eb157c00a7/SL_Map_FinalNET.png or click on the image
Tuesday, May 01, 2007
Microsoft SQL Server Community Samples: Service Broker On CodePlex, Astoria and Jasper Announced
Microsoft SQL Server Community Samples: Service Broker On CodePlex
Don't get all excited yet because nothing is available yet. I am just letting you know that this is a brand new project on CodePlex.
Here is the URL: http://www.codeplex.com/SQLSrvSrvcBrkr
Astoria
Project Codename “Astoria”
The goal of Microsoft Codename Astoria is to enable applications to expose data as a data service that can be consumed by web clients within a corporate network and across the internet. The data service is reachable over regular HTTP requests, and standard HTTP verbs such as GET, POST, PUT and DELETE are used to perform operations against the service. The payload format for the service is controllable by the application, but all options are simple, open formats such as plan XML and JSON. Web-friendly technologies make Astoria an ideal data back-end for AJAX-style applications, and other applications that need to operate against data that is across the web.
To learn more about Project Astoria or download the CTP, visit the Project Astoria website at http://astoria.mslivelabs.com.
Jasper
Project Codename “Jasper”
Project Jasper is geared towards iterative and agile development. You can start interacting with the data in your database without having to create mapping files or define classes. You can build user interfaces by naming controls according to your model without worrying about binding code. Project Jasper is also extensible, allowing you to provide your own business logic and class model. Since Project Jasper is built on top of the ADO.NET Entity Framework, it supports rich queries and complex mapping.
To learn more about Project Jasper visit the ADO.NET Blog at http://blogs.msdn.com/adonetTo download the Project Jasper CTP visit http://www.microsoft.com/downloads/details.aspx?FamilyId=471BB3AC-B31A-49CD-A567-F2E286715C8F&displaylang=en.
>>Since Project Jasper is built on top of the ADO.NET Entity Framework
Mmmm didn't they take the ADO.NET Entity Framework out of Orcas on Sunday?
Don't get all excited yet because nothing is available yet. I am just letting you know that this is a brand new project on CodePlex.
Here is the URL: http://www.codeplex.com/SQLSrvSrvcBrkr
Astoria
Project Codename “Astoria”
The goal of Microsoft Codename Astoria is to enable applications to expose data as a data service that can be consumed by web clients within a corporate network and across the internet. The data service is reachable over regular HTTP requests, and standard HTTP verbs such as GET, POST, PUT and DELETE are used to perform operations against the service. The payload format for the service is controllable by the application, but all options are simple, open formats such as plan XML and JSON. Web-friendly technologies make Astoria an ideal data back-end for AJAX-style applications, and other applications that need to operate against data that is across the web.
To learn more about Project Astoria or download the CTP, visit the Project Astoria website at http://astoria.mslivelabs.com.
Jasper
Project Codename “Jasper”
Project Jasper is geared towards iterative and agile development. You can start interacting with the data in your database without having to create mapping files or define classes. You can build user interfaces by naming controls according to your model without worrying about binding code. Project Jasper is also extensible, allowing you to provide your own business logic and class model. Since Project Jasper is built on top of the ADO.NET Entity Framework, it supports rich queries and complex mapping.
To learn more about Project Jasper visit the ADO.NET Blog at http://blogs.msdn.com/adonetTo download the Project Jasper CTP visit http://www.microsoft.com/downloads/details.aspx?FamilyId=471BB3AC-B31A-49CD-A567-F2E286715C8F&displaylang=en.
>>Since Project Jasper is built on top of the ADO.NET Entity Framework
Mmmm didn't they take the ADO.NET Entity Framework out of Orcas on Sunday?
Monday, April 30, 2007
SIMP = Silverlight + IIS + MySQL + PHP
Okay so SIMP is not LAMP but it is interesting that Microsoft is doing a demo with MySQL and PHP
Read more here: http://channel9.msdn.com/Showpost.aspx?postid=304526
Read more here: http://channel9.msdn.com/Showpost.aspx?postid=304526
I-Hate-Oracle Club Forum On Worse Than Failure
The daily WTF (Worse Than Failure) has a forum with the following name: the The I-Hate-Oracle Club
"Because it's time we senselessly bash someone besides Microsoft."
Here are some threads
Even Oracle hates Oracle
The empty string IS NULL
How Oracle ruined my holidays
ORA-00942: table or view does not exist
Hate is too weak an adjective
Real Application Cluster or real application pain in the ass
Anyway if you want to check it out yourself go here: http://forums.worsethanfailure.com/forums/17/ShowForum.aspx
"Because it's time we senselessly bash someone besides Microsoft."
Here are some threads
Even Oracle hates Oracle
The empty string IS NULL
How Oracle ruined my holidays
ORA-00942: table or view does not exist
Hate is too weak an adjective
Real Application Cluster or real application pain in the ass
Anyway if you want to check it out yourself go here: http://forums.worsethanfailure.com/forums/17/ShowForum.aspx
Saturday, April 28, 2007
Podcast With Jeff Atwood From Coding Horror
Jeff Atwood is on the latest podcast from DotNetRocks, Jeff Atwood is the guy who blogs on CodingHorror. If you have never heard of CodingHorror then you should definitely check it out
A couple of weeks ago there was a post titled Why Can't Programmers.. Program?
In that post there is the FizzBuzz challenge. What is the FizzBuzz challenge?
So what is the problem? Well this is what Jeff said
Interesting indeed. Anyway listen to the podcast which you can download here: Jeff Atwood on the Human Side of Software Development
In the meanwhile here is the T-SQL solution, of course if you had a number table you could skip the loop.
DECLARE @LoopInt INT
SET @LoopInt =1
WHILE @LoopInt <= 100 BEGIN
PRINT ISNULL(NULLIF(CASE WHEN @LoopInt % 3 = 0 THEN 'Fizz' ELSE '' END
+ CASE WHEN @LoopInt % 5 = 0 THEN 'Buzz' ELSE '' END, ''), @LoopInt)
SET @LoopInt= @LoopInt + 1
END
Output
------------------
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
16
17
Fizz
19
Buzz
Fizz
22
23
Fizz
Buzz
26
Fizz
28
29
FizzBuzz
31
32
Fizz
34
Buzz
Fizz
37
38
Fizz
Buzz
41
Fizz
43
44
FizzBuzz
46
47
Fizz
49
Buzz
Fizz
52
53
Fizz
Buzz
56
Fizz
58
59
FizzBuzz
61
62
Fizz
64
Buzz
Fizz
67
68
Fizz
Buzz
71
Fizz
73
74
FizzBuzz
76
77
Fizz
79
Buzz
Fizz
82
83
Fizz
Buzz
86
Fizz
88
89
FizzBuzz
91
92
Fizz
94
Buzz
Fizz
97
98
Fizz
Buzz
A couple of weeks ago there was a post titled Why Can't Programmers.. Program?
In that post there is the FizzBuzz challenge. What is the FizzBuzz challenge?
Write a program that prints the numbers from 1 to 100. But for multiples of
three print "Fizz" instead of the number and for the multiples of five print
"Buzz". For numbers which are multiples of both three and five print "FizzBuzz".
So what is the problem? Well this is what Jeff said
Most good programmers should be able to write out on paper a program which does
this in a under a couple of minutes. Want to know something scary? The majority
of comp sci graduates can't. I’ve also seen self-proclaimed senior programmers
take more than 10-15 minutes to write a solution.
Interesting indeed. Anyway listen to the podcast which you can download here: Jeff Atwood on the Human Side of Software Development
In the meanwhile here is the T-SQL solution, of course if you had a number table you could skip the loop.
DECLARE @LoopInt INT
SET @LoopInt =1
WHILE @LoopInt <= 100 BEGIN
PRINT ISNULL(NULLIF(CASE WHEN @LoopInt % 3 = 0 THEN 'Fizz' ELSE '' END
+ CASE WHEN @LoopInt % 5 = 0 THEN 'Buzz' ELSE '' END, ''), @LoopInt)
SET @LoopInt= @LoopInt + 1
END
Output
------------------
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
16
17
Fizz
19
Buzz
Fizz
22
23
Fizz
Buzz
26
Fizz
28
29
FizzBuzz
31
32
Fizz
34
Buzz
Fizz
37
38
Fizz
Buzz
41
Fizz
43
44
FizzBuzz
46
47
Fizz
49
Buzz
Fizz
52
53
Fizz
Buzz
56
Fizz
58
59
FizzBuzz
61
62
Fizz
64
Buzz
Fizz
67
68
Fizz
Buzz
71
Fizz
73
74
FizzBuzz
76
77
Fizz
79
Buzz
Fizz
82
83
Fizz
Buzz
86
Fizz
88
89
FizzBuzz
91
92
Fizz
94
Buzz
Fizz
97
98
Fizz
Buzz
Lambda Expressions, LINQ, DLINQ And XLINQ Samples For Orcas
Microsoft has a bunch of samples on their sitethat show how Lambda Expressions, LINQ, DLINQ And XLINQ work in Visual Studio Orcas Beta 1
This is what is available right now
C# LINQ Samples and content for Beta 1
C# LINQ Samples and content for March CTP
VB LINQ Samples for Beta 1
If you install C# LINQ Samples and content for Beta 1 then you will see the following examples
Data
DynamicQuery
ExpressionTreeVisualizer
LinqToNorthwind
ObjectDumper
PasteXmlAsXLinq
Reflector
Rss
SampleQueries
SimpleLambdas
WinFormsDataBinding
XLinqIntro
XQuery
In addidion to the samples there are also these five whitepapers in the whitepapers folder.
LINQ to SQL Overview for CSharp Developers.doc
XLinq_Overview - Feb.doc
LINQ Project Overview.doc
CSharp 3.0 Specification.doc
Standard Query Operators.doc
This is all a must read if you want to get started with .NET 3.5
Here is the download link in case the URLs above changes: http://msdn2.microsoft.com/en-us/bb330936.aspx
This is what is available right now
C# LINQ Samples and content for Beta 1
C# LINQ Samples and content for March CTP
VB LINQ Samples for Beta 1
If you install C# LINQ Samples and content for Beta 1 then you will see the following examples
Data
DynamicQuery
ExpressionTreeVisualizer
LinqToNorthwind
ObjectDumper
PasteXmlAsXLinq
Reflector
Rss
SampleQueries
SimpleLambdas
WinFormsDataBinding
XLinqIntro
XQuery
In addidion to the samples there are also these five whitepapers in the whitepapers folder.
LINQ to SQL Overview for CSharp Developers.doc
XLinq_Overview - Feb.doc
LINQ Project Overview.doc
CSharp 3.0 Specification.doc
Standard Query Operators.doc
This is all a must read if you want to get started with .NET 3.5
Here is the download link in case the URLs above changes: http://msdn2.microsoft.com/en-us/bb330936.aspx
Thursday, April 26, 2007
Virus A Very Addictive Game
Reminds me of the first time I played tetris, very addictive. And no my wife doesn't appreciate the fact that I found this game URL below the pic http://www.rfshq.com/forum/games/virus2.swf
Tuesday, April 24, 2007
Microsoft SQL Server Reporting Services Management Changes In Katmai
Brian Welcker has posted a change that Microsoft is considering making in the next version of SQL Server (Katmai) for SQL Server Reporting Services . From the site:
"For Katmai we are considering the removal of namespace management (folders, reports, data sources, models) from the Reporting Services Add-in for SQL Server Management Studio (SSMS). In other words, we are considering removing the 'Home' folder under the Reporting Server node in SSMS."
Read the rest here:
http://blogs.msdn.com/bwelcker/archive/2007/04/24/watusi-ssrs-mangament-tools-changes-for-katmai.aspx
If that link doesn't work because management is misspelled try the home page: http://blogs.msdn.com/bwelcker/default.aspx
"For Katmai we are considering the removal of namespace management (folders, reports, data sources, models) from the Reporting Services Add-in for SQL Server Management Studio (SSMS). In other words, we are considering removing the 'Home' folder under the Reporting Server node in SSMS."
Read the rest here:
http://blogs.msdn.com/bwelcker/archive/2007/04/24/watusi-ssrs-mangament-tools-changes-for-katmai.aspx
If that link doesn't work because management is misspelled try the home page: http://blogs.msdn.com/bwelcker/default.aspx
You Should Never Use IN In SQL To JOIN With Another Table
Do you use the following syntax?
SELECT *
FROM TABLE
WHERE CoLumn IN (SELECT Column FROM TABLE)
OR this?
SELECT *
FROM TABLE
WHERE CoLumn NOT IN (SELECT Column FROM TABLE)
Do NOT use that, it will cause problems sooner or later. Don't believe me? Let's take a look
First create these 2 tables and populate them with some sample data
CREATE TABLE TestTable1 (id1 int)
CREATE TABLE TestTable2 (id2 int)
INSERT TestTable1 VALUES(1)
INSERT TestTable1 VALUES(2)
INSERT TestTable1 VALUES(3)
INSERT TestTable2 VALUES(1)
INSERT TestTable2 VALUES(2)
Now let's run the IN query
SELECT *
FROM TestTable1
WHERE id1 IN (SELECT id2 FROM TestTable2)
-----
id1
1
2
No problems here right?
What if by mistake you wrote id1 instead of id2?
SELECT *
FROM TestTable1
WHERE id1 IN (SELECT id1 FROM TestTable2)
-----
id1
1
2
3
Oops all 3 rows are returned, if you just run this SELECT id1 FROM TestTable2 you will get this error
Server: Msg 207, Level 16, State 3, Line 1
Invalid column name 'id1'.
So what happens? SQL Server sees column id1 and says "yes I have that it is in the TestTable1 table, I can use that"
What can we do? Use EXISTS because you will get an error instead of a wrong resultset
SELECT *
FROM t1
WHERE EXISTS (SELECT * FROM TestTable2 t2 WHERE t2.id2 = t1.id1 )
-----
id1
1
2
A JOIN will do the same as EXISTS
SELECT t1.*
FROM TestTable1 t1
JOIN TestTable2 t2 ON t2.id2 = t1.id1
-----
id1
1
2
Now let's try NOT IN
SELECT *
FROM TestTable1
WHERE id1 NOT IN (SELECT id2 FROM TestTable2)
-----
id1
3
No problem right?
Add a NULL value to the TestTable2 table
INSERT TestTable2 VALUES(NULL)
Let's try running it again
SELECT *
FROM TestTable1
WHERE id1 NOT IN (SELECT id2 FROM TestTable2)
Where are my rows? Nowhere, since NULL is not equal to anything including another NULL SQL just returns nothing
What happens when you use NOT EXISTS?
SELECT *
FROM TestTable1 t1
WHERE NOT EXISTS (SELECT * FROM TestTable2 t2 WHERE t2.id2 = t1.id1 )
-----
id1
3
That works without a problem
What about a LEFT JOIN?
SELECT t1.*
FROM TestTable1 t1
LEFT JOIN TestTable2 t2 ON t2.id2 = t1.id1
WHERE t2.id2 IS NULL
-----
id1
3
That works without a problem also
So from now on use EXISTS, NOT EXISTS, JOIN and LEFT JOIN
DO NOT use IN or NOT IN ever again. Okay?
SELECT *
FROM TABLE
WHERE CoLumn IN (SELECT Column FROM TABLE)
OR this?
SELECT *
FROM TABLE
WHERE CoLumn NOT IN (SELECT Column FROM TABLE)
Do NOT use that, it will cause problems sooner or later. Don't believe me? Let's take a look
First create these 2 tables and populate them with some sample data
CREATE TABLE TestTable1 (id1 int)
CREATE TABLE TestTable2 (id2 int)
INSERT TestTable1 VALUES(1)
INSERT TestTable1 VALUES(2)
INSERT TestTable1 VALUES(3)
INSERT TestTable2 VALUES(1)
INSERT TestTable2 VALUES(2)
Now let's run the IN query
SELECT *
FROM TestTable1
WHERE id1 IN (SELECT id2 FROM TestTable2)
-----
id1
1
2
No problems here right?
What if by mistake you wrote id1 instead of id2?
SELECT *
FROM TestTable1
WHERE id1 IN (SELECT id1 FROM TestTable2)
-----
id1
1
2
3
Oops all 3 rows are returned, if you just run this SELECT id1 FROM TestTable2 you will get this error
Server: Msg 207, Level 16, State 3, Line 1
Invalid column name 'id1'.
So what happens? SQL Server sees column id1 and says "yes I have that it is in the TestTable1 table, I can use that"
What can we do? Use EXISTS because you will get an error instead of a wrong resultset
SELECT *
FROM t1
WHERE EXISTS (SELECT * FROM TestTable2 t2 WHERE t2.id2 = t1.id1 )
-----
id1
1
2
A JOIN will do the same as EXISTS
SELECT t1.*
FROM TestTable1 t1
JOIN TestTable2 t2 ON t2.id2 = t1.id1
-----
id1
1
2
Now let's try NOT IN
SELECT *
FROM TestTable1
WHERE id1 NOT IN (SELECT id2 FROM TestTable2)
-----
id1
3
No problem right?
Add a NULL value to the TestTable2 table
INSERT TestTable2 VALUES(NULL)
Let's try running it again
SELECT *
FROM TestTable1
WHERE id1 NOT IN (SELECT id2 FROM TestTable2)
Where are my rows? Nowhere, since NULL is not equal to anything including another NULL SQL just returns nothing
What happens when you use NOT EXISTS?
SELECT *
FROM TestTable1 t1
WHERE NOT EXISTS (SELECT * FROM TestTable2 t2 WHERE t2.id2 = t1.id1 )
-----
id1
3
That works without a problem
What about a LEFT JOIN?
SELECT t1.*
FROM TestTable1 t1
LEFT JOIN TestTable2 t2 ON t2.id2 = t1.id1
WHERE t2.id2 IS NULL
-----
id1
3
That works without a problem also
So from now on use EXISTS, NOT EXISTS, JOIN and LEFT JOIN
DO NOT use IN or NOT IN ever again. Okay?
Sunday, April 22, 2007
AdventureWorksLT Sample Database Available For Download, Don't Forget To Attach The DB To See It
There is a new sample database available for SQL Server 2005. The name of this database is AdventureWorksLT , this database is a stripped down version of AdventureWorks.
You can download the installers for the AdventureWorksLT sample databases here
x86 AdventureWorksLT.msi -- 2,251 KB
x64 AdventureWorksLT_x64.msi -- 2,251 KB
Itanium (IA64) AdventureWorksLT_IA64.msi -- 2,251 KB
If you want to read more on the download page go here: http://www.microsoft.com/downloads/details.aspx?familyid=e719ecf7-9f46-4312-af89-6ad8702e4e6e&displaylang=en
Okay so you have downloaded the file and installed the database. But where is the database? You will have to attach the DB, you can use the wizard or this script below (make sure that you change the path and username, both are in bold font)
USE [master]
GO
CREATE DATABASE [AdventureWorksLT] ON
( FILENAME = N'C:\YourPathHere\MSSQL\Data\AdventureWorksLT_Data.mdf' ),
( FILENAME = N'C:\YourPathHere\MSSQL\Data\AdventureWorksLT_Log.ldf' )
FOR ATTACH
GO
if exists (select name from master.sys.databases sd where name = N'AdventureWorksLT' and SUSER_SNAME(sd.owner_sid) = SUSER_SNAME() )
EXEC [AdventureWorksLT].dbo.sp_changedbowner @loginame=N'LoginName', @map=false
GO
Now you can run these scripts to see how many tables, views, procedures and functions there are
SELECT TABLE_SCHEMA + '.' + TABLE_NAME AS FullTableName
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
ORDER BY FullTableName
-------------------------
dbo.BuildVersion
dbo.ErrorLog
SalesLT.Address
SalesLT.Customer
SalesLT.CustomerAddress
SalesLT.Product
SalesLT.ProductCategory
SalesLT.ProductDescription
SalesLT.ProductModel
SalesLT.ProductModelProductDescription
SalesLT.SalesOrderDetail
SalesLT.SalesOrderHeader
SELECT TABLE_SCHEMA + '.' + TABLE_NAME AS FullTableName
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'VIEW'
ORDER BY FullTableName
-------------------------------------
SalesLT.vGetAllCategories
SalesLT.vProductAndDescription
SalesLT.vProductModelCatalogDescription
SELECT ROUTINE_NAME
FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE ='FUNCTION'
-------------------------
ufnGetCustomerInformation
ufnGetSalesOrderStatusText
ufnGetAllCategories
SELECT ROUTINE_NAME
FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE ='PROCEDURE'
-------------------------
uspPrintError
uspLogError
You can download the installers for the AdventureWorksLT sample databases here
x86 AdventureWorksLT.msi -- 2,251 KB
x64 AdventureWorksLT_x64.msi -- 2,251 KB
Itanium (IA64) AdventureWorksLT_IA64.msi -- 2,251 KB
If you want to read more on the download page go here: http://www.microsoft.com/downloads/details.aspx?familyid=e719ecf7-9f46-4312-af89-6ad8702e4e6e&displaylang=en
Okay so you have downloaded the file and installed the database. But where is the database? You will have to attach the DB, you can use the wizard or this script below (make sure that you change the path and username, both are in bold font)
USE [master]
GO
CREATE DATABASE [AdventureWorksLT] ON
( FILENAME = N'C:\YourPathHere\MSSQL\Data\AdventureWorksLT_Data.mdf' ),
( FILENAME = N'C:\YourPathHere\MSSQL\Data\AdventureWorksLT_Log.ldf' )
FOR ATTACH
GO
if exists (select name from master.sys.databases sd where name = N'AdventureWorksLT' and SUSER_SNAME(sd.owner_sid) = SUSER_SNAME() )
EXEC [AdventureWorksLT].dbo.sp_changedbowner @loginame=N'LoginName', @map=false
GO
Now you can run these scripts to see how many tables, views, procedures and functions there are
SELECT TABLE_SCHEMA + '.' + TABLE_NAME AS FullTableName
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
ORDER BY FullTableName
-------------------------
dbo.BuildVersion
dbo.ErrorLog
SalesLT.Address
SalesLT.Customer
SalesLT.CustomerAddress
SalesLT.Product
SalesLT.ProductCategory
SalesLT.ProductDescription
SalesLT.ProductModel
SalesLT.ProductModelProductDescription
SalesLT.SalesOrderDetail
SalesLT.SalesOrderHeader
SELECT TABLE_SCHEMA + '.' + TABLE_NAME AS FullTableName
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'VIEW'
ORDER BY FullTableName
-------------------------------------
SalesLT.vGetAllCategories
SalesLT.vProductAndDescription
SalesLT.vProductModelCatalogDescription
SELECT ROUTINE_NAME
FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE ='FUNCTION'
-------------------------
ufnGetCustomerInformation
ufnGetSalesOrderStatusText
ufnGetAllCategories
SELECT ROUTINE_NAME
FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE ='PROCEDURE'
-------------------------
uspPrintError
uspLogError
Saturday, April 21, 2007
ORDER BY 1 Will Not Work In LINQ The Same As In SQL
I installed Visual Studio Orcas Beta 1 last night and now I am playing around with LINQ
You know how you can do the following in SQL
SELECT *
FROM SomeTable
ORDER BY 1
This will order the resultset by the first column. This of course is not good practice but that is not the point here. In LINQ if you do orderby 1 (that is right no space between order and by) it looks like that line is skipped, no error or exception is thrown
Dump the following code in a C# console application and try for yourself
You know how you can do the following in SQL
SELECT *
FROM SomeTable
ORDER BY 1
This will order the resultset by the first column. This of course is not good practice but that is not the point here. In LINQ if you do orderby 1 (that is right no space between order and by) it looks like that line is skipped, no error or exception is thrown
Dump the following code in a C# console application and try for yourself
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string[] names = { "Burke", "Connor", "Frank",
"Everett", "Albert", "George",
"Harris", "David" };
IEnumerable expr = from s in names
where s.Length == 6
orderby 1
//order by s
select s.ToUpper();
foreach (string item in expr)
Console.WriteLine(item);
Console.ReadLine();
}
}
}
Subscribe to:
Posts (Atom)