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• In T-SQL how to display columns for given table name?

  - by salvationishere

  I am trying to list all of the columns from whichever Adventureworks table I choose. What T-sQL statement or stored proc can I execute to see this list of all columns? I want to use my C# web app to input one input parameter = table_name and then get a list of all the column_names as output. Right now I am trying to execute the sp_columns stored proc which works, but I can't get just the one column with select and exec combined. Does anybody know how to do this?

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• Thoughts on using Alpha Five v10 with Codeless AJAX for building an AJAX database app in a short amo

  - by william Hunter

  I need to build an AJAX application against our MS SQL Server database for my company. the app has to have user permissions and reporting and is pretty complex. I am really under the gun in terms of time. The company that I work for needs the app for an important project launch. A colleague/friend of mine in a different company recommended that I look at a product from Alpha Software called Alpha Five v10 with Codeless AJAX. He has told me that he has used it extensively and that it saves him a "serious boat load of time" and he says that he has not run into limitations because you can also write your own JavaScript or you wire in jQuery. Before I commit to Alpha Five v10, I would like to get any other opinions? Thanks. Norman Stern. Chicago

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• thoughs on using Alpha Five v10 with Codeless AJAX for building an AJAX database app in a short amou

  - by william Hunter

  I need to build an AJAX application against our MS SQL Server database for my company. the app has to have user permissions and reporting and is pretty complex. I am really under the gun in terms of time. The company that I work for needs the app for an important project launch. A colleague/friend of mine in a different company recommended that I look at a product from Alpha Software called Alpha Five v10 with Codeless AJAX. He has told me that he has used it extensively and that it saves him a "serious boat load of time" and he says that he has not run into limitations because you can also write your own JavaScript or you wire in JQERY. Before I commit to Alpha Five v10, I would like to get any other opinions? Thanks. Norman Stern. Chicago

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• Algorithms to trim leading zeroes from a SQL field?

  - by froadie

  I just came across the interesting problem of trying to trim the leading zeroes from a non-numeric field in SQL. (Since it can contain characters, it can't just be converted to a number and then back.) This is what we ended up using: SELECT REPLACE(LTRIM(REPLACE(fieldWithLeadingZeroes,'0',' ')),' ','0') It replaces the zeroes with spaces, left trims it, and then puts the zeroes back in. I thought this was a very clever and interesting way to do it, although not so readable if you've never come across it before. Are there any clearer ways to do this? Any more efficient ways to do this? Or any other ways to do this period? I was intrigued by this problem and would be interested to see any methods of getting around it.

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• Visual Studio 2010 Database Projects: Are there any videos/tutorials or comments about the new Datab

  - by Mark Redman

  I have recently upgraded to Visual Studio 2010. I have kept database projects separate to application projects. The database project was converted from and old DPR project and added a whole lot of additional folder. I deleted those, but now I suspect I need to recreate the project as these new projects work very differently. Now that I have need to update scripts, it seems I can even paste new SQL files into the project so am a bit stuck. Are there any tutorials / walkthrough that show the basics on starting and creating a database project? Or even better a video? Also if there are any tips and tricks or comments on this, I will be happy to hear them?

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• Can I encrypt value in C# and use that with SQL Server 2005 symmetric encryption?

  - by Robert Byrne

  To be more specific, if I create a symmetric key with a specific KEY_SOURCE and ALGORITHM (as described here), is there any way that I can set up the same key and algorithm in C# so that I can encrypt data in code, but have that data decrypted by the symmetric key in Sql Server? From the research I've done so far, it seems that the IDENTITY_VALUE for the key is also baked into the cypher text, making things even more complex. I'm thinking about just trying all the various ways I can think of, ie hashing the KEY_SOURCE using different hash algorithms for a key and trying different ways of encrypting the plain text until I get something that works. Or is that just futile? Has anyone else done this, any pointers? UPDATE Just to clarify, I want to use NHibernate on the client side, but theres a bunch of stored procedures on the database side that still perform decryption.

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• Is using Natural Join or Implicit column names not a good practice when writing SQL in a programming

  - by Jian Lin

  When we use Natural Join, we are joining the tables when both table have the same column names. But what if we write it in PHP and then the DBA add some more fields to both tables, then the Natural Join can break? The same goes for Insert, if we do a insert into gifts values (NULL, "chocolate", "choco.jpg", now()); then it will break the code as well as contaminating the table when the DBA adds some fields to the table (example as column 2 or 3). So it is always best to spell out the column names when the SQL statements are written inside a programming language and stored in a file in a big project.

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• How to do a Postgresql subquery in select clause with join in from clause like SQL Server?

  - by Ricardo

  I am trying to write the following query on postgresql: select name, author_id, count(1), (select count(1) from names as n2 where n2.id = n1.id and t2.author_id = t1.author_id ) from names as n1 group by name, author_id This would certainly work on Microsft SQL Server but it does not at all on postegresql. I read its documentation a bit and it seems I could rewrite it as: select name, author_id, count(1), total from names as n1, (select count(1) as total from names as n2 where n2.id = n1.id and n2.author_id = t1.author_id ) as total group by name, author_id But that returns the following error on postegresql: "subquery in FROM cannot refer to other relations of same query level". So I'm stuck. Does anyone know how I can achieve that? Thanks

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• What can I do about a SQL Server ghost FK constraint?

  - by rcook8601

  I'm having some trouble with a SQL Server 2005 database that seems like it's keeping a ghost constraint around. I've got a script that drops the constraint in question, does some work, and then re-adds the same constraint. Normally, it works fine. Now, however, it can't re-add the constraint because the database says that it already exists, even though the drop worked fine! Here are the queries I'm working with: alter table individual drop constraint INDIVIDUAL_EMP_FK ALTER TABLE INDIVIDUAL ADD CONSTRAINT INDIVIDUAL_EMP_FK FOREIGN KEY (EMPLOYEE_ID) REFERENCES EMPLOYEE After the constraint is dropped, I've made sure that the object really is gone by using the following queries: select object_id('INDIVIDUAL_EMP_FK') select * from sys.foreign_keys where name like 'individual%' Both return no results (or null), but when I try to add the query again, I get: The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "INDIVIDUAL_EMP_FK". Trying to drop it gets me a message that it doesn't exist. Any ideas?

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• Losing DateTimeOffset precision when using C#

  - by Darvis Lombardo

  I have a SQL Server table with a CreatedDate field of type DateTimeOffset(2). A sample value which is in the table is 2010-03-01 15:18:58.57 -05:00 As an example, from within C# I retrieve this value like so: var cmd = new SqlCommand("SELECT CreatedDate FROM Entities WHERE EntityID = 2", cn); var da = new SqlDataAdapter(cmd); DataTable dt =new DataTable(); da.Fill(dt); And I look at the value: MessageBox.Show(dt.Rows[0][0].ToString()); The result is 2010-03-01 15:18:58 -05:00, which is missing the .57 that is stored in the database. If I look at dt.Rows[0][0] in the Watch window, I also do not see the .57, so it appears it has been truncated. Can someone shed some light on this? I need to use the date to match up with other records in the database and the .57 is needed. Thanks! Darvis

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• SQL: How can i update a value on a column only if that value is null?

  - by user321185

  Hey, I have an SQL question which may be basic to some but is confusing me. Here is an example of column names for a table 'Person': PersonalID, FirstName, LastName, Car, HairColour, FavDrink, FavFood Let's say that I input the row: 121312, Rayna, Pieterson, BMW123d, Brown, NULL, NULL Now I want to update the values for this person, but only if the new value is not null, Update: 121312, Rayna, Pieterson, NULL, Blonde, Fanta, NULL The new row needs to be: 121312, Rayna, Pieterson, BMW123d, Blonde, Fanta, NULL So I was thinking something along the lines of: Update Person(PersonalID, FirstName, LastName, Car, HairColour, FavDrink, FavFood) set Car = @Car (where @Car is not null), HairColour = @HairColour (where @HairColour...)... etc. My only concern is that I can't group all the conditions at the end of the query because it will require all the values to have the same condition. Can't i do something like Update HairColour if @HairColour is not Null

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• How to add additional rows to result set by condition

  - by Puzzled

  I have a table like this: ObjId Date Value 100 '20100401' 12 200 '20100501' 45 200 '20100401' 37 300 '20100501' 75 300 '20100401' 69 400 '20100401' 87 I have to add additional rows to result set for objId's, where there is no data at '20100501' **100 '20100501' null** 100 '20100401' 12 200 '20100501' 45 200 '20100401' 37 300 '20100501' 75 300 '20100401' 69 **400 '20100501' null** 400 '20100401' 87 What is the best way to do this? Here is the T-SQL script for the initial table: declare @datesTable table (objId int, date smalldatetime, value int) insert @datesTable select 100, '20100401', 12 union all select 200, '20100501', 45 union all select 200, '20100401', 37 union all select 300, '20100501', 75 union all select 300, '20100401', 69 union all select 400, '20100401', 87 select * from @datesTable

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• What's the best way to capture output from SQL Management Studio and paste it into an Outlook email?

  - by Decker

  I'm constantly executing ad-hoc queries in SQL Management Studio and need to send the results to people via email. This happens several times a day so I'm looking for the best way to copy the results of the query from the results window into an Outlook email body so that it can be formatted in a reader friendly manner. I haven't come up with anything that works well for me. When it really matters, I end up going into Excel, executing the query from within there and then attaching the resulting spreadsheet. I'm looking for something that I can do without involving Excel if possible. Any ideas?

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• Adding a new column to Table which contains live data

  - by Ardman

  I have a large table consisting of over 60 millions records and I would like to add 2 new columns for data migration purposes. There are indexes on the table and some of them are large. So, by me adding the 2 new columns to the table, will I run the risk of slowing down the database whilst it attempts to add them and maybe time-out? Or will it just work? I know that if I try and rearrange the columns SQL Server will ask me to drop and re-create the table, so I definately don't want this. Is this something everyone is challenged with?

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• How can I update many rows with SQL in a single table?

  - by tmarouda

  Hi folks. I have a table and one of the columns holds web addresses like: 'http://...' or 'https://...'. The problem is that there are some invalid entries, like 'shttp://...' or '#http//...' (the first character is invalid) and I want to correct all of them. I use the following SQL statement: 'SELECT [...] FROM MyTable WHERE WebAddress LIKE '_http%' and I successfuly get the problematic rows. But how am I going to change/correct all of them using an UPDATE statement? If you have some other solution please share it!

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• ssrs column groups disable multiple columns

  - by DKS

  I'm using ASP.NET 4.0 Visual Studio 2010 RC version Sql Server Report Services (SSRS) ReportViewer and are aware that columns only display on PDF export - not the preview. I want to use a matrix embedded in a table on a page that has multiple columns. I've done some testing and frustratingly found that if you have a tablix with at least one grouped column (even if there is only one displayed matrix-like column group) the columns seem to be disabled. Once I remove the tablix with a grouped column from the tablix from the report the report does multiple-columns. Does anyone know a way around this?

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• How do I gain permissions to a Sql Compact Database?

  - by Quenton Jones

  I have an Sql Compact Database v3.5 that I'm bundling with my application. When the application is installed, the database is copied into the application's Program Files directory. Because of Vista and Win7's security settings, the installed application can't access the database file. It is merely a problem of having the database file reside in the Program Files. The solution I have thought of is to copy the file into Program Data, but does anyone have another solution? I am sure others have come across a similar problem. Thanks in advance for your input.

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• LINQ to SQL for tables across databases. Or View?

  - by BritishDeveloper

  I have a Message table and a User table. Both are in separate databases. There is a userID in the Message table that is used to join to the User table to find things like userName. How can I create this in LINQ to SQL? I can't seem to do a cross database join. Should I create a View in the database and use that instead? Will that work? What will happen to CRUD against it? E.g. if I delete a message - surely it won't delete the user? I'd imagine it would throw an error. What to do? I can't move the tables into the same database!

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• Tips for improving performance of DB that is above size 40 GB (Sql Server 2005) and growing monthly

  - by HotTester

  The current DB or our project has crossed over 40 GB this month and on an average it is growing monthly by around 3 GB. Now all the tables are best normalized and proper indexing has been used. But still as the size is growing it is taking more time to fire even basic queries like 'select count(1) from table'. So can u share some more points that will help in this front. Database is Sql Server 2005. Further if we implement Partitioning wouldn't it create a overhead ? Thanks in advance.

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• How to achieve "merge" of two data sets with Insert SQL statemen (Oracle DBMS)t?

  - by Roman Kagan

  Hi: What would be the insert SQL statement to merge data from two tables. For example I have events_source_1 table (columns: event_type_id, event_date) and events_source_2 table (same columns) and events_target table (columns: event_type_id, past_event_date nullalbe, future_event_date nullable). Events_source_1 has past events, Events_source_2 has future events and resultant events_target would contain past and future events in the same row for same event_type_id. If there is no past_events but future_events then past_event_date won't be set and only future_event_date will be and the opposite is true too. Thanks a lot in advance for helping me resolving this problem.

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• Looking for alternatives to the database project.

  - by Dave

  I've a fairly large database project which contains nine databases and one database with a fairly large schema. This project takes a large amount of time to build and I'm about to pull my hair out. We'd like to keep our database source controlled, but having a hard getting the other devs to use the project and build the database project before checking in just because it takes so long to build. It is seriously crippling our work so I'm look for alternatives. Maybe something can be done with Redgate's SQL Compare? I think maybe the only drawback here is that it doesn't validate syntax? Anyone's thoughts/suggestions would be most appreciated.

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• Design guide-lines for writing a Typed SQL Statement API ?

  - by this. __curious_geek

  Last night I came up to sometihng intersting while designing my new project that brought me to ask this qustion here. My project is supposed to follow Table Gateway pattern using tradional ADO.Net datasets for data access. I don't want to write plain queries in my data-access classes. So I came up with an idea of writing a parser kindaa api that exposes objects and methods to generate queries on the move based on my domain objects. Later I want this api to hook up to my Business objects and provide Typed SQL generator api right on the business object instances. Any idea or references how can I do this ? This seems very wide to start with that I'm compelled take your opinions here. Does there anything already exists that can do this ?

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• How do you escape double quotes inside a SQL fulltext 'contains' function?

  - by Richard Davies

  How do you escape a double quote character inside a MS SQL 'contains' function? SELECT decision FROM table WHERE CONTAINS(decision, '34" AND wide') Normally contains() expects double quotes to surround an exact phrase to match, but I want to search for an actual double quote character. I've tried escaping it with \, `, and even another double quote, but none of that has worked. P.S. I realize a simple example like this could also be done using the LIKE statement, but I need to use the fulltext search function. The query I provided here has been simplified from my actual query for example purposes.

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• Is it possible to inspect the contents of a Table Value Parameter via the debugger?

  - by Stephen Edmonds

  Does anyone know if it is possible to use the Visual Studio / SQL Server Management Studio debugger to inspect the contents of a Table Value Parameter passed to a stored procedure? To give a trivial example: CREATE TYPE [dbo].[ControllerId] AS TABLE( [id] [nvarchar](max) NOT NULL ) GO CREATE PROCEDURE [dbo].[test] @controllerData [dbo].[ControllerId] READONLY AS BEGIN SELECT COUNT(*) FROM @controllerData; END DECLARE @SampleData as [dbo].[ControllerId]; INSERT INTO @SampleData ([id]) VALUES ('test'), ('test2'); exec [dbo].[test] @SampleData; Using the above with a break point on the exec statement, I am able to step into the stored procedure without any trouble. The debugger shows that the @controllerData local has a value of '(table)' but I have not found any tool that would allow me to actual view the rows that make up that table.

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• Computed Column with relationships

  - by Sethery

  I have a table, MapLocation, which has a column and two relationships with tables that have a field that really need to be displayed as a single concatenated value. I was thinking this was a perfect case for a computed column, but not sure how to go about it. MapLocation MaoNo Section _____________________ _____________________ _____________________ MapNoId MapNoId SectionId SectionId MapNumber (int) Section (int) Identifier (nvarchar) LocationName (nvarchar) LocationName = "MapNUmber - SectionNumber - Identifier" ex: 20 - 03 - SW4 How would I write that? I haven't done much with computed columns or concatenating in SQL. Edit: I need an actual computed column that is automatically updated, im looking for the formula. Or is this more of a function/trigger? Its possible, I certainly barely know what I'm doing. The idea is that I dont want to have to do two more server calls and concatenate these values client side.

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