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  • SQL - Add up all row-values of one column in a singletable

    - by ThE_-_BliZZarD
    Hello Everybody, I've got a question regarding a SQL-select-query: The table contains several columns, one of which is an Integer-column called "size" - the task I'm trying to perform is query the table for the sum of all rows (their values), or to be more exact get a artifical column in my ResultSet called "overallSize" which contains the sum of all "size"-values in the table. Preferable it would be possible to use a WHERE-clause to add only certain values ("WHERE bla = 5" or something similar). The DB-engine is HSQLDB (HyperSQL), which is compliant to SQL2008. Thank you in advance :)

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  • Check if a connection is in a transaction

    - by acidzombie24
    I am getting a SqlConnection does not support parallel transactions. exception and this answer mentions its when a connection tries to open two transactions. This is exactly what i am doing. I thought nested transactions were ok (i was using sqlite for the prototype). How do i check if the connection is already in a transaction? I am using Microsoft SQL Server Database File.

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  • join two tables but want one matching columns instead of showing it separately sql server 2008

    - by amby
    Hi i want to display join result of two tables but don't want to show matching column separately. I want it one instead of two. so please tell me what query should i use for this. I m using sql server 2008 and my query is like: select * from Customer_Order, optRelation where Customer_Order.orderNumber = optRelation.orderNumber AND optRelation.orderNumber = 21. please reply soon

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  • Date difference in SQL Server 2005

    - by naveen
    Hi, I have two dates of the form Start Date: 2007-03-24, End Date: 2009-06-26 Now I need to find the difference between these two in the below form: 2 years, 3 months and 2 days Can someone please … in SQL Server 2005

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  • Signs that a SQL statement is dangerous

    - by Matt
    Hi, I want to develop a function in PHP that checks how dangerous a SQL statement is. When i say dangerous i mean, certain symbols, characters or strings that are used to get data from a database that the user shouldnt see. For example: SELECT * FROM users WHERE userId = '1' can be injected in several ways. Although i clean the params, i also want to monitor how safe the query is to run. Thanks in advance

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  • LINQ display row numbers

    - by timvaines
    I simply want to include a row number against the returned results of my query. I found the following post that describes what I am trying to achieve but gives me an exception http://vaultofthoughts.net/LINQRowNumberColumn.aspx "An expression tree may not contain an assignment operator" In MS SQL I would just use the ROWNUMBER() function, I'm simply looking for the equivalent in LINQ.

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  • MDF and LDF Files size

    - by Nazim
    I was wondering if there was any recommended max size for MDF and/or LDF Files for an SQL server instance. For example, if I want to create a 400 GBytes Database, is there a rule to help me decide how many mdf files I should create ? or should I just go ahead and create a single gigantic 400Gbytes mdf file? If so is this going to somehow affect the database performances ?

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  • SQL updating a column in a table

    - by tecnodude
    Hi, I have the following table in an access database id VisitNo Weight 1 1 100 1 2 95 1 3 96 1 4 94 1 5 93 Now row 2 and 4 are deleted. So i have... id VisitNo Weight 1 1 100 1 3 96 1 5 93 However what i need is... id VisitNo Weight 1 1 100 1 2 96 1 3 93 What is the SQL query i need to accomplish the above? thanks

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  • SQL Server Redirection

    - by MrTehee
    We are switching from a SQL cluster to a mirrored solution. The problem is that we have a bunch of programs that would have to switch connection strings to handle the failover. Is there any way the we can set up a redirect or proxy that would take any legacy requests and forward them to the mirrored solution?

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  • Find query that caused update

    - by MadMax
    We have been having problems with ghost updates in our DB (SQL Server 2005) fields are changeing and we cannot find the routine that is updating. Is there a way using an update trigger (Or any other way) to tell what caused the update?

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  • sql count() query for tables

    - by air
    i have two tables table1 fields fid,fname,fage a ,abc ,20 b ,bcv ,21 c ,cyx ,19 table2 fields rcno,fid,status 1 ,a ,ok 2 ,c ,ok 3 ,a ,ok 4 ,b ,ok 5 ,a ,ok i want to display rectors like this fid from table1 , count(recno) from table 2 and fage from table1 fid,count(recno),fage a ,3 ,20 b ,2 ,21 c ,1 ,19 i try many sql queries but got error Thanks

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  • Is there anyway that we can get a label value to a Sql

    - by Pradeep
    SELECT COUNT(*) AS Expr1 FROM Book INNER JOIN Temp_Order ON Book.Book_ID = Temp_Order.Book_ID WHERE (Temp_Order.User_ID = 25) AND (CONVERT (nvarchar, Temp_Order.OrderDate, 111) = CONVERT (nvarchar, GETDATE(), 111)) In here i want to change my User_ID to get from a label.Text this Sql Statement is in a DataView. so in the Wizard it not accepting a text box values or anything. can someone please help me to solve this

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  • What is wrong with this sql statement?

    - by chandru_cp
    I am trying to fetch records based on two dates from sql server... Select * from table where CreatedDate between @StartDate and @EndDate and i pass 5/12/2010 and 5/12/2010 (ie) fetching records for today... I have 17 records dated 5/12/2010 but none seems to get selected.... EDIT: I use this but when i debug my value it shows 5/12/2010 12:00:00AM DateTime baseDate = DateTime.Today; var today = baseDate; GetBookingReportByDate(today,today);

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  • Getting average from 3 columns in MS SQL

    - by barbarian
    I have table with 3 columns(smallint) in MS SQL 2005. Table Ratings ratin1 smallint, ratin2 smallint ratin3 smallint These columns can have values from 0 to 5 How to select average value of these fields, but only compare fields where value is greater then 0. So if column values are 1,3,5 - average had to be 3 if values are 0,3,5 - average had to be 4

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  • Problem using IIS 7 and SQL SERVER 2008

    - by Daniel
    I have problem using IIS 7 and SQL Server 2008. When I trying to show my website using IIS as webserver I get the message "[SqlException (0x80131904): Login failed for user..." When I using the webserver included in Visual Studio 2010 to show same website there is no problem to access the database. Why is it working with VS2010 webserver but not with IIS?

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  • Need help with a SQL Query

    - by Jack
    I have created a table with the following structure- $sql = "CREATE TABLE followers ( uid int UNSIGNED NOT NULL UNIQUE, PRIMARY KEY(uid), follower_count int UNSIGNED , is_my_friend bool, status_count int UNSIGNED, location varchar(50) )"; I need to find the uid of the person with max(status_count+follower_count) and whose is_my_friend = 1 I wrote the following query but I ain't getting the correct uid. SELECT p.uid FROM (select uid,is_my_friend,max(follower_count+status_count) from followers) p WHERE p.is_my_friend = 1;

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