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• Erro while join table in SQL

  - by Color Shadow

  I have two tables that have relationship with UserName field. Based on UserName column, I want to get ID from CarReserve table. Here is my SQL statement: SELECT CarReserve.ID FROM CarReserve INNER JOIN aspnet_Users ON CarReserve.UserName = aspnet_Users.UserName WHERE UserName = @UserName Unfortunately, I am getting this warning: Ambiguous column name "UserName" Can anyone here tell me what is wrong with my statement?

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• Looking for a good book on SQL

  - by hsatterwhite

  Was wondering if any one could recommend any and all books for learning more about SQL and DB concepts? I found this one while browsing SO, but was wondering if anyone had other or more up to date recommendations?

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• SQL Alter: add multiple FKs?

  - by acidzombie24

  From here ALTER TABLE ORDERS ADD FOREIGN KEY (customer_sid) REFERENCES CUSTOMER(SID); How do i add several keys with SQL Server? is it something like the below? (I cant test ATM and unfortunately i have no way to test queries unless i run it through code) ALTER TABLE ORDERS ADD FOREIGN KEY (customer_sid) REFERENCES CUSTOMER(SID), ADD FOREIGN KEY (customer_sid2) REFERENCES CUSTOMER(SID2); or is it like ALTER TABLE ORDERS ADD FOREIGN KEY (customer_sid, customer_sid2) REFERENCES CUSTOMER(SID, SID2)

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• Keeping the data in memory or sql database

  - by user14322

  I'm trying to learn SQL to store the data rather than reading the file and populating the whole data structure in memory. would it be like reading the data from disk instead of direct memory?

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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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• "Ambiguous column name" error on one particular server

  - by jazbit

  This simple query throws the "Ambiguous column name TaskID" error on one db-server only. This is ridiculous. We tested this with the same database structure on different servers and different versions of ms sql (2005/2008), and it's only THIS particular client's server that throws the error. I'm actually frustrated. SELECT Tasks.TaskID FROM Tasks INNER JOIN TaskHelpers ON TaskHelpers.TaskID = Tasks.TaskID order by TaskID Yes, I know I can put "Tasks.TaskID" into the order by clause, but for some reasons I can't.

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• Adding more attributes to linq to sql entity

  - by jess

  Hi, I want to add browsable attribute to some properties for entities generated by linq-to-sql.Is it a good idea? Since,these entities are auto-generated,and when I regenerate they(the attributes I have added) might be overwritten

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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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• INSERT 2000 records into SQL Database all at a time from C# .NET code

  - by padmavathi

  We need to INSERT 2000 records into SQL DB from C# .Net code. For this is there any way to INSERT all 2000 records at a time instead of executing the INSERT query for each record. Also how would be the performance impact of doing this? Thanks & Regards Padma

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• Get SQL Server 2008 Management Studio icons

  - by alex

  I want to get icons from SQL Server 2008 Management Studio. Is it free ? If so where can I download it ?

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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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• What's the sql scheme for supporting Tags system?

  - by Tom

  Hi, i've coded a tiny forum software in php where people posts threads, and i want to support tags. How many SQL tables should i make for this ? and briefly how the tags system will work? Thanks

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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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• List all tables that are currently published for replication MS-SQL

  - by Scott Vercuski

  I need to get a list of all tables that are published for replication from MS-SQL 2005/2008 databases. Is there a system stored procedure or a query I could run to generate such a list? Thank you,

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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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• SQL How to convert a decimal to a string

  - by theringostarrs

  In a SELECT statement I want to convert values to strings ie. SELECT TO_STRING(value). How can I do this in Oracle SQL?

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• basic differences between oracle and SQL Server?

  - by I__

  i am going on a job interview and have zero experience with ms sql, however i have 1 year with oracle. is there such a huge difference between the two? what programming questions can i expect?

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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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