firebird

问题 This is a Firebird database. First Table Contacts Company_ID - job_title Second Table Client_id - Co_name In contacts, I want to the job_title field to contain the co_name. client_id and company_id are the same. Co_name correspond to company_id as well as client_id. this: UPDATE Contacts SET Contacts.Job_title = Clients.co_name where company_id in ( select client_id from clients JOIN Contacts c ON Client_id=company_id where record_status='A') gives me an error as cannot find (clients.co_name)

问题 If I connect to an embedded Firebird database, and create a remote event, I get System.NotSupportedException: Specified method is not supported.. on the constructor. _fbRemoteEvent = new FbRemoteEvent(_fbConnection); //_fbConnection is valid and Opened Looking at source code from call stack, it leads to FesDatabase.cs with RemoteEvent IDatabase.CreateEvent() { throw new NotSupportedException(); } I use the embedded version for automated tests purpose ... Is there something I can do to get

问题 This question already has an answer here : firebird isql: “there is no table XXXX in this database” (1 answer) Closed 3 years ago . I could establish the connection to a Firebird database with the following connection string: ConnectionString = "User ID=SYSDBA;Password=masterkey;Database=localhost:C:\\MyDb\\mydb.FDB;DataSource=localhost;Charset=NONE;"; But when the C# code tries to execute the query the following error comes: Dynamic SQL Error SQL Error Code = -204 Table unknown The code that

问题 I would like to assign a value to a variable which is used in an sql code in firebird. The MySQL-Code would be: SET @x = 1; SELECT @x; What is the correspondent Firebird-Code? Thanks for help. 回答1: To define a user-defined session-specific variable in Firebird you can use rdb$set_context. The correspondent Firbird-code for your MySql-example would be: select rdb$set_context('USER_SESSION', 'x', 1) from rdb$database select rdb$get_context('USER_SESSION', 'x') from rdb$database Notes: 1.) Be

问题 I'm trying to set up Firebird with EF6 as an embedded server for a simple app I'm writing but haven't been able to get it to work. I have a CLI project which is the app and the DAL project which is the DB. I added the NuGet packages to both and created a DbContext with a simple entity, and created an initial migration successfully, but when trying to run update-database to execute the migration I received this error in the Package Manager Console: System.Runtime.Serialization

问题 I know that there are many Delphi database related questions available, but I'm considering only these two databases. I will need to query around 100.000 records. From your experience which one is faster: as embedded as C/S Thanks. 回答1: I Haven't used Nexus tbh, but I use Firebird regulary (Client/Server) and I am absolutely loving it. It's small, fast, tries-to-be SQL92 compliant, and the management tools are f-a-n-t-a-s-t-i-c (see IBExpert, they have free edition aswell) The embedded

问题 I cannot access ANY database by ANY means from within Delphi XE Professional. What I mean by accessing the data base is: having the live database appear via components in the Object Inspector, when the connected property is set to true using the Data Explorer to create and explore database connections EDIT: SORTED !! The core problem is that communication into the database, including specifically the communication generated by the IDE and any code built using the drivers was problematic.

问题 I am trying to delete all tables in a database in Firebird using the following command: string dropAllForeignKeysSql = "EXECUTE BLOCK RETURNS (stmt VARCHAR(1000)) AS "+ "BEGIN "+ "FOR "+ "select 'alter table \"'||r.rdb$relation_name ||'\" drop constraint '||r.rdb$constraint_name||';' "+ "from rdb$relation_constraints r "+ "where (r.rdb$constraint_type='FOREIGN KEY') "+ "into :stmt "+ " DO begin execute statement :stmt; end "+ "END "+ ";"; using (var connection = sessionFactory.OpenSession()

问题 is there any way to execute multiple statements (none of which will have to return anything) on Firebird? Like importing a SQL file and executing it. I've been looking for a while and couldn't find anything for this. 回答1: Shouldn't the normal query-delimiter work? Like: Update stuff; Delete stuff; Update stuff; 回答2: Execute statement is exactly for that purpose. Works in IBExpert too, a simple example : execute block as begin Update stuff; Delete stuff; Update stuff; end Comprehensive guide,

问题 I'm currently working on modifying a Firebird v. 1.5 database. The database structure will be modified running queries from a delphi application using interbase components, the problem I'm facing is that I need to run a lot of queries, some of which include creating generators and updating the generator value, the problem is that I need to achieve this in as few queries as possible, but it seems(at least to me) that this is not really possible, what I'm trying to do is the following: /* this