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• mysql unique-constraint

  - by Cypher

  I have two tables -- Variables (id, name) and Variable_Entries (id, var_id, value). I want each variable to have a unique set of entries. If I make the value entry unique then a different variable won't be able to have that same value which is not right. Is there some way to make the value column unique for identical var_id's?

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• Dataset and SQLCe in .net 4

  - by Tyler Edwards

  I'm trying to build a SQLCe table structure dynamically using a dataset as the temporary table structure... Is there a SqlConnection string that will work with SqlCe? There used to be a SqlCeConnection...but I don't find that in the 4.0 framework? Has something replaced this? If the answer is L2S or Entity Framework...can I add columns to SqlCe tables at runtime? If so...how?

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• Multiple foreign keys in one table to 1 other table in mysql

  - by djerry

  Hey guys, I got 2 tables in my database: user and call. User exists of 3 fields: id, name, number and call : id, 'source', 'destination', 'referred', date. I need to monitor calls in my app. The 3 ' ' fields above are actually userid numbers. now i'm wondering, can i make those 3 field foreign key elements of the id-field in table user? Thanks in advance...

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• ArcObjects - enumerating feature classes and datasets within a geodatabase

  - by Tom

  I'm trying to enumerate the contents (feature classes and feature datasets, not interested in tables, etc) of a file geodatabase using vba/arcobjects. I have the file GDB set as an IGxDatabase object, but can't find a way of getting further in. I've had a look at the geodatabase object model and tried using IFeatureClass and IFeatureDataset but neither seem to return useful results. Thanks in advance for any assistance

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• Is there an implementation of Tom Kyte's STRAGG function supporting SQL Server?

  - by s_rajasekar

  STRAGG function implemention returns a result as a single column value. Implementation for Oracle seems pretty generic and can be consumed for different tables (and relationships). Could similar behavior be achieved for SQL Server. A search in the web, appears to return only hard coded implementations and not a generic one. Do we have any known solution for Sql server?

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• DataTable DataRow Select String with Quotation Marks

  - by RBrattas

  Hi, My string include quotation mark; the select statement crash. vm_TEXT_string = "Hello 'French' People"; vm_DataTable_SELECT_string = "[MyField] = '" + vm_TEXT_string + "'"; DataRow[] o_DataRow_ARRAY_Found = vco_DataTable.Select (vm_DataTable_SELECT_string); I cannot use this statement: string filter = "[MyColumn]" + " LIKE '%" + SearchWord + "%'"; I found string format: DataRow[] oDataRow = oDataSet.Tables["HasDiseas"].Select ( string.Format ( "DName='{0}'", DiseasListBox.SelectedItem.ToString () ) ); Any suggestion to selecta string with quotation mark? Thank you, Rune

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• How to export data with sql developer?

  - by Adomas

  Hi, How to export oracle DB data with sql developer? I need all data, tables, constrains, structure and so on. Thanks

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• Entity Sql for a Many to Many relationship

  - by Deepak N

  Consider two tables Bill and Product with a many to many relationship. How do you get all the bills for a particular product using Entity Sql?

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• In a One to One relationship should i drop one of the table's id column?

  - by Vlad

  I have the following 2 tables in MySQL: Customer(Id, Firstname, Lastname...) Bonus(Id, CustomerId, Value, ...) The relation is One-To-One, every customer has only one bonus.(the CustomerId is unique in the Bonus Table) Q: Should I drop the Id column of the Bonus table? (I want to know why or why not)

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• The future of SSRS

  - by graham.reeds

  Does anyone know of where future features of SSRS are listed? I found a page that describes the features that are released with SS2K8 R2 but they don't solve the main problem I have porting our Excel reports to SSRS which is vertical merging (plus rotated text to go in those cells) and horizontal tables. I would like to be able to tell my angry users if/when they will be available...

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• Class Map Generator for Fluent NHibernate

  - by Farzad

  Is there a Class Map generator for Fluent NHibernate? I need something like db2hbm but I want it to generate Fluent Class Maps instead of xml mappings. I am aware of AutoMapping for Fluent but that is not what I want. I want to be able to generate Class Map files from tables in database and push them to my src repository.

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• Multi-Page invoice printing on one page

  - by ryan

  I have an invoice that contains over 100 lines of product that I am trying to print. This single invoice should take over 3 pages, but when printed, the content flows off the footer and the next page is the following invoice. I am using divs instead of tables, and I can't understand why the long invoices will not print on multiple pages. Any ideas?

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• SQL Server: pulling and updating local data

  - by SDReyes

  Hi guys, I have two SQL Server 2008 databases called Anna and Bob. Bob has to pull and transform data from Anna to keep updated his tables. Ideally Bob will be always synchronized with Anna, but some delay would be acceptable. What is the best way to do this? Thanks in advance.

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• Setting up Eloquent relationships in Laravel for existing InnoDB relationships

  - by adam

  I have an initial migration that sets up two tables (users and projects), with a relationship (innoDB). $table->foreign('user_id')->references('id')->on('users'); I have two Eloquent models set up, blank except for the relationship: return $this->has_many('Project'); Do i definitely need to tell eloquent about the relationship in the models and the database? I'd assumed something as comprehensive as Laravel would infer it from the Schema? Is there something I'm missing?

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• Tool for documentation of the fields of a database ?

  - by Jerome WAGNER

  Hello, I need to add documentation to all fields of 2 databases (1 postgresql & 1 sql server), around 100 tables each. What tool would be convenient to do that (reverse the schema + add documentation manually on all fields) ? My favors would go to an open source tool with a graphical & xml output. Thanks for your help Jerome WAGNER

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• What is an Entity? Why is it called Entity?

  - by rkrauter

  What is the deal with Entities (when talking about the Entity Framework)? From what I understand, it is pretty much an in memory representation of a data store like sql tables. Entities are smart enough to track changes and apply those changes to the data store. Is there anything more to it? Thanks in advance.

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• In SQL SERVER 2008 ,is it possible to disable auto drop of global temp table

  - by nayeem

  Hi question1 : I am using global temp tables in sql server 2008 but once my connection is closed this temp is dropped is there any way to diable auto drop Question2 : If two connections are accesstion same global temp table and another connection is trying to delete that global temp table,does sql server handles this synchronization properly? from nayeem khan

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• Appending data to Datatable

  - by Sathish

  I am adding data to a dataset using the below code cmdExcel.CommandText = "SELECT * FROM Table11" dr = cmdExcel.ExecuteReader(); DataTable dtExcel = new DataTable("WK11"); dtExcel.Load(dr); ds.Tables.Add(dtExcel); Now i want to add the content from Table2 to the same datatable WK11. Is it possible? cmdExcel.CommandText = "SELECT * FROM Table12" dr = cmdExcel.ExecuteReader(); dtExcel.Append(.....

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• Query design in SQL - ORDER BY SUM() of field in rows which meet a certain condition

  - by Christian Mann

  OK, so I have two tables I'm working with - project and service, simplified thus: project ------- id PK name str service ------- project_id FK for project time_start int (timestamp) time_stop int (timestamp) One-to-Many relationship. Now, I want to return (preferably with one query) a list of an arbitrary number of projects, sorted by the total amount of time spent at them, which is found by SUM(time_stop) - SUM(time_start) WHERE project_id = something. So far, I have SELECT project.name FROM service LEFT JOIN project ON project.id = service.project_id LIMIT 100 but I cannot figure out how what to ORDER BY.

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• Getting next row using SQL

  - by Peter

  I have 2 tables with data thus: Col1 Col2 ------- -------- Admin001 A Admin001 B Admin002 C Admin002 C Admin003 A Admin003 C I need to find all instances of Col2 values with 'A' immediately followed by 'B'. 'A' followed by any other symbol does not count. Is there a way to use SQL to accomplish this? Environment is DB2 LUW v9.5

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• best method to update the SQL table data from c# .NET 2005

  - by Jebli

  Hi , I have a dataset with some 30 records in it. I want to update it to the database tables. which is the best method to update the table. I am unable to use dataadapter.update() since i am using a procedure to populate the dataset. is there any efficient way to update other than iterating through EACH record and updating it Please help. Thanks.

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• Dynamic Jasper Report

  - by pramod

  Hi, i need to create dynamic jasper report . my scenario is i have nearly 60 tables in database,so i can't create 60 jasper reports.i want a template jasper report which should be modified automatically by program.The data will come dynamically from the database and will be stored in an arraylist. iterating the arraylist i need to upload the data to jasper report. is that possible in java + jasper Reports. if so please give an example or any idea. thanks pramod

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• Using triggers to update linked server table

  - by tabouakl

  Can I use triggers to insert or update tables in a linked server? I tried it and got the following error: Unable to start a nested transaction for OLE DB provider 'SQLOLEDB'. A nested transaction was required because the XACT_ABORT option was set to OFF. [OLE/DB provider returned message: Cannot start more transactions on this session.] OLE DB error trace [OLE/DB Provider 'SQLOLEDB' ITransactionLocal::StartTransaction returned 0x8004d013: ISOLEVEL=4096].

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• Database design: OR relation

  - by Ant

  I have a database with a "users" table containing data about my users. Each user is to be linked to a company or a college. I wish to have two separate tables "college" and "company" each with a field "ID". So how do I link each record in the users table to either a company or a college? The basic thing is that I wish to establish an "OR" relationship in the database.

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• Debug using MbUnit/Gallio 3.1

  - by user314096

  When I use the [Debug] button in Gallio, the breakpoints in my unit tests are not hitting. The unit tests are written with MbUnit/Gallio. I am using MbUnit/Gallio version 3.1 build 397 with Visual Studio 2010 Beta 2. The unit tests run to completion in Gallio Icarus, but they run past the breakpoints. I see the symbol tables loading in VS, but it does not stop at the expected breakpoint, so I am unable to debug it.

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