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• DDD: Can I have my persistence layer object implement an interface that uses enum, with implicit con

  - by Maslow

  I have a domain interface public interface ITicket { ... TicketWorkflowStatus StatusId{get;set;} // Enum } but the linq-to-sql persistance layer on the database wants to use int, can I change it in the dbml so that the local type is TicketWorkflowStatus? What are my options?

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• what is the fast way for find data in sqlCE - windows mobile & C#

  - by Gold

  hi what is the fast way to find and data in sqlCE in windows-mobile (C#) ? i have database with 1000000 records. sql query ? .... or data reader ?.....or wat ?? thank's in advance

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• Getting 'The argument 1 of the xml data type method "modify" must be a string literal' while inserti

  - by sam

  Trying the following code. But getting 'The argument 1 of the xml data type method "modify" must be a string literal' error. searched alot but cant find any solution for this problem SET @Path = '/@ParentNodeName/@NodeName/child::*' SET @x.modify('insert attribute status {sql:variable("@status")} as first into (' + @Path + ')[1]')

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• Do make indexes containing another index make sense?

  - by Orlando Dilasso

  Given a table (id, col1, col2), does it make sense to create the following indexes: Index1 (col1) not unique Index2 (col1, col2) not unique I am faced with a legacy database that is full of those. Can I safely delete Index1? Anwser needed for SQL Server and Oracle.

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• Timestamp column - Can it be queried?

  - by Randy Minder

  Can a Timestamp (rowversion) column in a SQL Server table be queried? If so, how? I'd like to do something like this: Select * From MyTable Where MyTimestampColumn = "???" But am not sure what to put in for "???" Thanks - Randy

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• using or in mysql and merging columns

  - by Pradyut Bhattacharya

  I can select using or with the sql statement select f.userid, f.friend_userid from friends f where userid = 1 or friend_userid = 1; now in the output i have to merge the two rows(userid and friend_userid) into one row such that only the rows without 1 are displayed I m using mysql.... Thanks Pradyut India

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• query " ALTER TABLE test_posts ADD sticky boolean NOT NULL default = false" = error

  - by William

  Whats wrong with my query? ALTER TABLE test_posts ADD sticky boolean NOT NULL default = false #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '=false' at line 2

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• Oracle Sql Developer vendor code 1317

  - by Zemian

  Hi, I am using Oracle Sql Developer to browse a MySQL database. When I browse table with Columns tab(shows table definitions), some of tables will display an Error Encountered dialog that says: Vendor code 1317. Does anyone know how I can resolve this? Thanks, /Z

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• how to use an mdf in App_Data with shared hosting

  - by name

  If I create a website that uses an mdf in App_Data with the connection string: Server=.\SQLExpress;AttachDbFilename=|DataDirectory|mydbfile.mdf;Database=dbname; Trusted_Connection=Yes; what do I need to do to run the site in a shared hosting environment? Do I need to copy the contents of my mdf to the main SQL Server engine of my host? Is there a way to use the non-SQLExpress engine of my host and still keep my mdf in my App_Data?

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• Asp.net web site and web service hosting

  - by Razvi

  I have a web site and a web service and I would like to host them somewhere. I need to use it mostly for testing and so that a some friends who are developing some applications to use the service have access to it. Also the service is using a MS SQL 2008 database. Could you suggest any good free or cheap web hosting service for this. I would need about 1-2 months of hosting.

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• how to open *.sdf files ?

  - by Gold

  i used to open sdf (sqlCE) files with visual-studio ?? or sql-server ?? i really don't remember. now i can't open this sdf file with what program do i need to open it ?

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• What are the uses for Cross Join?

  - by vanslly

  A cross join performs a cartesian product on the tuples of the two sets. SELECT * FROM Table1 CROSS JOIN Table2 Which circumstances render such an SQL operation particularly useful?

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• SqlServer Split operation

  - by Geetha

  Hi All, How to split a string in sql server. Ex: Input String: stack over flow Result: stack over flow Geetha.

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• Open Source/ Free alternatives to Redgate Test Data Generator

  - by Perpetualcoder

  I was wondering if there are any free / open source alternatives to RedGate's Data Generator. I do not care if the tool is script based, GUI based, written in anly language/platform. I should be able to target a SQL Server or MySQL schema and have test data generated for me which gets inserted into db directly or generate scripts for insertion.

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• What should I be afraid of when I make a site public?

  - by ggfan

  If I was going to put my site for the public's use, what are some security issues that I should be worried about? I know of SQL injections. What other hacks/injections should I be aware of?

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• Which one can have better performance - LINQ to EF or NHibernate?

  - by masoud ramezani

  I want to start working on a big project. I research about performance issues about LINQ to EF and NHibernate. I want to use one of them as ORM in my project. now my question is that which one of these two ORM can get me better performance in my project? I will use SQL Server 2008 as database and C# as programming language.

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• Why would SET ARITHABORT ON dramatically speed up a query?

  - by Jonathan Allen

  The query is a single select containing a lot of grouping levels and aggragate operations. With SET ARITHABORT ON is takes less than a second, otherwise it takes several minutes. We have seen this behavior on SQL Server 2000 and 2008.

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• FirstOrDefault In F#

  - by build_your_web

  How to write FirstOrDefault Linq Query in F#? Can I use linq to sql in F# in totally?

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• See images in SSMS?

  - by Vaccano

  I was browsing around and found this blog post: http://erikej.blogspot.com/2010/04/version-3-of-exportsqlce-now-available.html (It is for a great add in if you user SQL Server CE.) On that post I saw an screen shot of SSMS with images in the results. How is this done? I have images in my database (PNG files that are serialized via memory stream), but I just see numbers when I select the image column.

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• Sql query executing perfectly in phpmyadmin but giving warning while running on page

  - by saurav

  i don't know whats wrong with this sql query. SELECT * FROM main WHERE key LIKE '%$word%' its giving results in phpMyAdmin but giving warning while executing it in a php page. Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource

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• How to use Contains() in my join

  - by jrep...

  I am trying to get my linq query to replicate my t-sql but I am lost. SELECT * FROM BaiDetail INNER JOIN BaiDetailMap ON BaiDetail.DetailText LIKE '%' + BaiDetailMap.BaiDetailMapSearchText +'%' This is what I have so far... but no go from det in Source from map in Map where det.DetailText.Contains(map.SearchText) select new {det, map} Error Message: Only arguments that can be evaluated on the client are supported for the String.Contains method.

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• how do I update the date type column?

  - by Muhammad Hammad

  update answers a1 set a1.FilingDate=( select date_sub( a2.FilingDate ,Interval 1000 Year) as FilingDate from answers a2 where Year(a2.FilingDate)>=3000 ) where Year(a1.FilingDate)>=3000 but it gives me the following error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'update answers a1 set a1.FilingDate=( select date_sub(a2.FilingDate,Interval 10' at line 1 Can anyone tell me about the issue and its solution?

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• Primary Key Names in Fluent Nhibernate

  - by fregas

  Is there a way in fluent nhibernate (or possibly NHibernate in general) to tell it to generate the primary keys differently? It creates the column name for the key fine, but the index/constraint gets weird generated names like: PK_Address_3214EC2725332734 PK_CreditCa_3214EC2756CA82C8 etc... I can use straight sql to rename them but i'd rather not. thanks, all

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• Hibernate criteria DB2 composite keys in IN clause

  - by nkr1pt

  Hibernate criteria, using DB2 dialect, generates the following sql with composite keys in the IN clause, but DB2 answers that the query is incorrect: select * from tableA where (x, y) IN ( ( 'x1', y1) ) but, DB2 throws this: SQL0104N An unexpected token "," was found following ", y) in ( ('x1'". Expected tokens may include: "+". SQLSTATE=42601

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• Why does PostgreSQL have to be different (scheme does not exist)?

  - by Ben Dauphinee

  I'm not used to working with PostgreSQL, but am using Zend_Db_Select to create my queries. What does the error below mean? SQL error: ERROR: schema "il" does not exist In statement: SELECT il.count(*) AS "count" FROM "image_lite" AS "il" INNER JOIN "exif_parse" AS "ex" ON il.image_id = ex.image_id WHERE (ex.cam_make = 'apple')

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