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  • sql conditional union on rowcount

    - by Stavros
    I have an SQL function which returns a list of Teams. I want to join an additional list to that list with a union, but only if it returns more than one rows. Something like: CREATE FUNCTION Teams() RETURNS TABLE AS RETURN ( SELECT * FROM TABLE1 UNION if @@rowcount>1 SELECT * FROM TABLE2 end if )

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  • Insert data into SQL server with best performance

    - by Incognito
    I have an application which intensively uses DB (SQL Server). As it must have high performance I would like to know the fastest way to insert record into DB.Fastest from the standpoint of execution time. What should I use ? As I know the fastest way is to create stored procedure and to call it from code (ADO.NET). Please let me know is there any better way or may be there are is some other practices to increase performance.

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  • Storing and retrieving dynamically created pdf in sql

    - by mwright
    I have been playing around with creation of pdf documents for a project that I'm working on. I would like to store the generated pdf document in a SQL database and then later be able to retrieve this pdf as well. What are some suggestions for doing this? Can the document be stored in the database without physically creating the document on the server?

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  • Native SQL - How to set the schema and database names

    - by icelobber
    Im using Native SQL from ABAP language. The query to get data is something like this SELECT COUNT(ROWID) FROM <SCHEMANAME>.<TABLENAME>;@<DATABASENAME> INTO :localvariable I want to somehow set the schemaname and database name as default so that i do not need to use them in the SELECTs later. Then i can only use the table name in the SELECT. thanks !!

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  • Use Tablediff to compare all tables

    - by Davie
    Hi, I have recently discovered the tablediff utility of SQL Server 2005. I have 2 instances of the same database each on a different server. Is it possible to compare all tables using tablediff without having to replicate the same command while only changing the table name? For example, compare table1 on server1 with table1 on server2 then compare table2 on server1 with table2 on server2, until all tables have been compared.

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  • Suggestions on documentation of a DB model when using Entity Framework 4

    - by Junior Ewing
    Any experiences on how to document Entity Framework 4 based Database projects? There is the Document and Summary properties on the Entities, but if we want to regenerate the model from the database at some point, it will be lost! Is there some way to map documentation data inside SQL to the Entities in the EDMX file so it is safe. Suggestions of other best practices? Ideally I want to be able to augo generate html/helpfile documentation from the DB when we deploy.

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  • Sql query Error: Operand should contain 1 column(s) in rails

    - by dombesz
    Hi everyone, SELECT * FROM jobs WHERE (SELECT DISTINCT jobs.* FROM jobs, job_requests WHERE (jobs.user_id = 1) OR (job_requests.user_id = 1 AND job_requests.job_id = jobs.id)) This sql gives me Mysql::Error: Operand should contain 1 column(s). If i execute the select from the where clause it works SELECT DISTINCT jobs.* FROM jobs, job_requests WHERE (jobs.user_id = 1) OR (job_requests.user_id = 1 AND job_requests.job_id = jobs.id) Could somebody explain me why? This query is generated by rails activerecord so the main select is needed.

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  • retrieve image from sql server in picturebox

    - by user3116296
    I have saved a picture in sql server and now i can not to retrieve image and set it's in picturebox with linq. why byte[] x become null? private void dataGridViewUser_CellClick(object sender, DataGridViewCellEventArgs e) { DataGridViewRow row = dataGridViewUser.CurrentRow; byte[] x=(byte[])row.Cells["Image"].Value; MemoryStream ms1 = new MemoryStream(x); picuser.Image = Bitmap.FromStream(ms1); }

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  • SQL Server Query

    - by Scott Jackson
    Hi, I'm trying to do some work with my SQL table. I have 2 buildings with room numbers 1 - 100 in building 1 and 101 - 199 in building 2. I have a location field (which I've just created) and want to run a query to populate it with either 'Building 1' or 'Building 2' depending on which room number it has in the 'Room' field. Many thanks for your help. Regards Scott

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  • sql to compare two strings in MS access

    - by tksy
    I am trying to compare a series of strings like the following rodeo rodas carrot crate GLX GLX 1.1 GLX glxs the comparision need not be case sensitive i am trying to write a sql where i am updating the first string with the second string if they match approximately. Here except the second string all the other examples match. I would like to write a query which updates the strings except the second one. is this possible directly in a query in ACCESS thanks

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  • Refactoring SQL

    - by Mongus Pong
    Are there any formal techniques for refactoring SQL similar to this list here that is for code? I am currently working on a massive query for a particular report and I'm sure there's plenty of scope for refactoring here which I'm just stumbling through myself bit by bit.

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  • Scope of Derived Tables in SQL Server

    - by FailBoy
    I've been looking into SQL recently and exploring a bit. in regards to Temp Tables I have discovered 3 different temp table types: 1) CREATE TABLE #TempTable 2) DECLARE TABLE @TempTable 3) SELECT * FROM (SELECT * FROM Customers) AS TempTable Now I understand the scope behind the #TempTable and the @TempTable types, but what about the derived table as in example 3? Where does this derived table get stored? and if it is declared in 1 transaction, can a 2nd transaction access it, or is the scoping of Derived Tables that same as example 1 and 2?

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  • SQL Query to get Count within a Stored Proc

    - by sia
    So i need to figure out how i can get a record count value and use that count as a new value to insert into a table. Ex: In My Stored Procedure @Count int What im looking for @Count to equal "select top (1) _fieldName from _someTable order by _fieldName Desc" Finally insert into _newTable (_fieldName) values (@Count) End I dont have to use a variable, just trying to demonstrate what im really trying to do. My SQL knowledge is pretty limited so no laughing, or smirking! ;)

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  • SQL Monitoring Overview

    - by andy
    Hi I currently loook after 20 odd databases in SQL server 2005 and need a tool for monitoring the performance and keep me informed if a database is running slow. Is there anything I can run within Managment studio of any other good third party tool (Pref free) that can do the job. Thanks

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