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  • Sqlite View : Add a column based on some other column

    - by NightCoder
    Hi, I have two tables Employee ID | Name | Department ---------------------- 121 |Name1 | dep1 223 |Name2 | dep2 Assignment ID | EID| --------- 1 |121 2 |223 3 |121 [other columns omitted for brevity] The table assignment indicates which is work is assigned to whom.EID is a foriegn key to the table Employee.Also it is possible to have two work assigned to the same employee. Now i want to create a view like this EID | Assigned -------------- 121 |true 333 |false Assigned column should be calculated based on the entries in the Assignment table. So far i am only successful in creating a view like this EID | Assigned -------------- 121 |2 333 |0 using the command CREATE VIEW "AssignmentView" AS SELECT distinct ID ,(select Count(*) from Assignment where Assignment.EID = Employee.ID) as Assigned FROM Employee; Thanks

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  • Problem using FluentNHibernate, SQLite and Enums

    - by weenet
    I have a Sharp Architecture based app using Fluent NHibernate with Automapping. I have the following Enum: public enum Topics { AdditionSubtraction = 1, MultiplicationDivision = 2, DecimalsFractions = 3 } and the following Class: public class Strategy : BaseEntity { public virtual string Name { get; set; } public virtual Topics Topic { get; set; } public virtual IList Items { get; set; } } If I create an instance of the class thusly: Strategy s = new Strategy { Name = "Test", Topic = Topics.AdditionSubtraction }; it Saves correctly (thanks to this mapping convention: public class EnumConvention : IPropertyConvention, IPropertyConventionAcceptance { public void Apply(FluentNHibernate.Conventions.Instances.IPropertyInstance instance) { instance.CustomType(instance.Property.PropertyType); } public void Accept(FluentNHibernate.Conventions.AcceptanceCriteria.IAcceptanceCriteria criteria) { criteria.Expect(x = x.Property.PropertyType.IsEnum); } } However, upon retrieval, I get an error regarding an attempt to convert Int64 to Topics. This works fine in SQL Server. Any ideas for a workaround? Thanks.

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  • sqlite ERROR no such column

    - by Richard
    Hi, Does anyone here have some experience with this error? Only If I use the WHERE clause, I get this error. I use php PDO to get the results. And this is my simple table $sql = "CREATE TABLE samenvatting ( stem_id INTEGER PRIMARY KEY AUTOINCREMENT, poll_id TEXT, stem_waarde_id TEXT, totaal INTEGER )"; $crud->rawQuery($sql); $poll_id = "somepoll"; $records = $crud->rawSelect('SELECT * FROM samenvatting WHERE poll_id=´.$poll_id); pdo abstract class public function conn() { isset($this->username); isset($this->password); if (!$this->db instanceof PDO) { $this->db = new PDO($this->dsn, $this->username, $this->password); $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); } } public function rawSelect($sql) { $this->conn(); return $this->db->query($sql); } Thanks, Richard

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  • Does a .NET 4.0 website load faster for a reason?

    - by Clarence Klopfstein
    I have been using DotNetBlogEngine for many years, and today my host (JodoHost.com) officially turned on support for .NET 4.0. What I've noticed immediately is that the website loads tremendously faster on the first load, subsequent loads are only slightly faster. The website is compiled as a .NET 2.0 web application. Is there a known reason for this performance increase? Was there a change in the .NET 4.0 framework that improved the initial load time of websites into an application pool? This is hosted on a 2003 server. Here is the site for reference: http://www.ocdprogrammer.com

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  • sqlite issues on iphone

    - by prajakta
    i can execute query but i can see the only last value of list_ID i want to access 4 but i am getting 6 ??? list_ID is ----------------------->is 4 2010-12-24 12:57:07.507 DatabaseTest[3398:207] QUERY EXECUTION 2010-12-24 12:57:07.508 DatabaseTest[3398:207] bxbxbxmnb 2010-12-24 12:57:07.508 DatabaseTest[3398:207] list_ID is ----------------------->is 5 2010-12-24 12:57:07.509 DatabaseTest[3398:207] QUERY EXECUTION 2010-12-24 12:57:07.510 DatabaseTest[3398:207] bxbxbxmnb 2010-12-24 12:57:07.511 DatabaseTest[3398:207] list_ID is ----------------------->is 6 this is the code if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { while(sqlite3_step(compiledStatement) == SQLITE_ROW) { acat=[[[Cat_tableList alloc]init]autorelease]; ///////////// statement//////// NSLog(@" QUERY EXECUTION"); // sStudent.cat_id=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; acat.list_id=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; acat.cat_id=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]; acat.names=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; acat.content=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 3)]; [appDelegate.catLists addObject:acat]; (@"final AUTo_ID array is ............%@",acat.content); NSLog(@" list_ID is ----------------------->is %@",acat.list_id); i just want value to b 4 so that i can use this somewhere /////////////// }

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  • Deleting SQLite rows automatically/periodically

    - by anselmophil
    Hi guys! So, i have a application that displays tasks and i created an option in the Settings menu that lets you choose in how many days all (Never, 10 days, 20 days or 30 days) these tasks should be automatically deleted. So when i open up the app there will be a method that will be called and check if theres any tasks to be deleted. I did that to challenge myself, but i'm hitting the wall with my head and i cant come up with something. So here i am in need of help! A little more information: i was trying to do something with java/android code, but from past searches i saw people dealing with it using SQL functions. Is it better? Thanks in advance guys!

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  • Matching day in datetime field from sqlite

    - by 99miles
    In Ruby on Rails I'm doing something like: Appointment.find( :first, :conditions => "staff_id = #{staff_id} AND datetimefield = #{datetime}") ... where datetimefield is of course, a datetime field. But, I only want rows where the date is equal to a given day, say 2/12/2011. I don't care about the time. What's an easy way to do this? Thanks!

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  • SQLite table query

    - by soclose
    Hi I query the table by using this function below public Cursor getTableInfo() throws SQLException { return db.query(TableName, null, null, null, null, null, null); } I got the error "View Root.handleMessage(Message)line:1704". I could insert the data but can't query the data. I called this function below Cursor c = db.getTableInfo(); int cRow = c.getCount(); if (cRow == 0) { Toast.makeText(NewContact.this, "No Record", Toast.LENGTH_LONG).show(); } Please help me.

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  • SQLITE basic syntax

    - by Doori Bar
    I seem to misunderstand a basic syntax, why this sample works: sqlite3_prepare_v2(db, "insert into test values('boo','boo',0);", strlen(querystring)+1 , &stmt, NULL); if ((rc = sqlite3_step(stmt)) != SQLITE_DONE) fprintf(stderr, "Error: sqlite3_step() %d. Error Message %s;\n",rc,sqlite3_errmsg(db)); But when I try this query: "insert into test(strtest) values('boo');" I get an error: Error: sqlite3_step() 19. Error Message constraint failed; What am I missing? table test is: "create table test (blobtest BLOB(4) NOT NULL, strtest VARCHAR NOT NULL, inttest INTEGER NOT NULL );" Thanks, Doori Bar

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  • Reference platform specific System.Data.SQLite

    - by Dmitriy Nagirnyak
    I am using SQLite for the unit testing and might use it as a database for local development/staging. The System.Data.SQLite has basically 2 versions: x86 and x64. Correct one should be used for the specific platform. I have 64 bit Win7, other guys in the team might use 32-bit OSs. The server's platform is not known at this stage. If I use 32-bit version of the assembly on 64-bit platform I get BadImageFormatException: Could not load file or assembly 'System.Data.SQLite'. I believe similar will happen trying to use 64-bit assembly on 32-bit platform. So my question is what is the best way to reference the SQLite assembly so that it does not depend on the platform and people can just use it? It is ok to use 32-bit version of assembly on a 64-bit platform (Maybe there is a switch for that somewhere?).

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  • SQLite Delphi thowing up incorrect exception.

    - by NeoNMD
    "Project CompetitionServer.exe raised exception class ESQLiteException with message 'Error executing SQL. Error [1]: SQL error or missing database. "INSERT INTO MatchesTable(MatchesID,RoundID,AkaFirstName,AoFirstName)VALUES(1,2,p,o)": no such column: p'. Process stopped. Use Step or Run to continue." This is clear to everone here that the notice is correct, p is NOT a column, it is some data I am trying to insert. What is the problem here?

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  • SQLite join selection from the same table using reference from another table

    - by daikini
    I have two tables: table: points |key_id | name | x | y | ------------------------ |1 | A |10 |20 | |2 | A_1 |11 |21 | |3 | B |30 |40 | |4 | B_1 |31 |42 | table: pairs |f_key_p1 | f_key_p2 | ---------------------- |1 | 2 | |3 | 4 | Table 'pairs' defines which rows in table 'points' should be paired. How can I query database to select paired rows? My desired query result would be like this: |name_1|x_1|x_2|name_2|x_2|y_2| ------------------------------- |A |10 |20 |A_1 |11 |21 | |B |30 |40 |B_1 |31 |41 |

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  • Need to get 3 record for database on current date using sqlite

    - by Umaid
    SELECT rowid, Day, Advice from MainCategory where ((Day = ((cast(strftime('%d',date('now','-1 day')) as Integer)))) and (Month = (strftime('%m',date('now'))))) and ((Day = ((cast(strftime('%d',date('now')) as Integer)))) and (Month = (strftime('%m',date('now'))))) , ((Day = ((cast(strftime('%d',date('now','+1 day')) as Integer)))) and (Month = (strftime('%m',date('now',+1 month))))); What if i make my Month column in Integer data type then it would be. SELECT rowid, Month, Day, Advice from MainCategory where ((Day = ((cast(strftime('%d',date('now','-1 day')) as Integer)))) and (Month = (strftime('%m',date('now'))))) and ((Day = ((cast(strftime('%d',date('now')) as Integer)))) and (Month = (strftime('%m',date('now'))))) , ((Day = ((cast(strftime('%d',date('now','+1 day')) as Integer)))) and (Month = (strftime('%m',date('now',+1 month))))); Please note that I have over this scenerio when I am in middle of month but below query returns 2 records and 1 from begining from all 11 months as (feb is exclusive) then record will be 33 but i need three 3 records from the table and increment it on next button. Please write 3 querys one which return all three record on current date, next all 3 records must be incremented by 1 on every next button click finally all 3 records must be decremented by 1 on every previous button click keep last day and begining date on the month in minds else i have also achieved for middle of month. Running query but returns 33 records instead of 3. SELECT rowid,Month, Day, Advice from MainCategory where Day in ((cast(strftime('%d',date('now','-1 day')) as Integer)),(cast(strftime('%d',date('now')) as Integer)),(cast(strftime('%d',date('now','+1 day')) as Integer)));

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  • sqlite issue using WHERE statement on a varchar field in Objective-C

    - by Geykel
    Hi, I have this sql statement SELECT * FROM Language WHERE LanguageCode=? where LanguageCode is a varchar(2). When I use sqlite3-prepare-v2 on that statement I got SQLITE_ERROR but if I use SELECT * FROM Language WHERE LanguageID=? where LanguageID is the primary key numeric identity field the statement compiles just fine. Is there any issue filtering by a varchar field using WHERE statement? Thanks

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  • How do I query SQLite Database in Android?

    - by kunjaan
    I successfully created the Database and inserted a row however I cannot Query it for some reason. My Droid crashes everytime. String DATABASE_NAME = "myDatabase.db"; String DATABASE_TABLE = "mainTable"; String DATABASE_CREATE = "create table if not exists " + DATABASE_TABLE + " ( value VARCHAR not null);"; SQLiteDatabase myDatabase = null; myDatabase = openOrCreateDatabase(DATABASE_NAME, Context.MODE_PRIVATE, null); myDatabase.execSQL(DATABASE_CREATE); // Create a new row of values to insert. ContentValues newValues = new ContentValues(); // Assign values for each row. newValues.put("value", "kunjan"); // Insert the row into your table myDatabase.insert(DATABASE_TABLE, null, newValues); String[] result_columns = new String[] { "value" }; Cursor allRows = myDatabase.query(true, DATABASE_TABLE, result_columns, null, null, null, null, null, null); if (allRows.moveToFirst()) { String value = allRows.getString(1); TextView foo = (TextView) findViewById(R.id.TextView01); foo.setText(value); } allRows.close(); myDatabase.close();

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  • How to replicate CoreData NSFetchedResultController with plain SQLite?

    - by jchatard
    I would like to replicate the notification sort of system provided with CoreData NSFetchedResultController which with really little enables us to update a tableView based on events such as Insert/Update/Delete of objects represented as Cells. I'm currently using SQLitePersistentObjects as a Database abstraction layer: http://code.google.com/p/sqlitepersistentobjects/ If you have any idea or something working or at least advices I'd be very happy! Thank you!

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  • Strange results from OdbcDataReader reading Sqlite DB

    - by stout
    This method returns some strange results, and was wondering if someone could explain why this is happening, and possibly a solution to get my desired results. Results: FileName = what I'd expect FileSize = what I'd expect Buffer = all bytes = 0 BytesRead = 0 BlobString = string of binary data FieldType = BLOB (what I'd expect) ColumnType = System.String Furthermore, if the file is greater than a few KB, the reader throws an exception stating the StringBuilder capacity argument must be greater than zero (presummably because the size is greater than Int32.MaxValue). I guess my question is how does one properly read large BLOBs from an OdbcDataReader? public static String SaveBinaryFile(String Key) { try { Connect(); OdbcCommand Command = new OdbcCommand("SELECT [_filename_],[_filesize_],[_content_] FROM [_sys_content] WHERE [_key_] = '" + Key + "';", Connection); OdbcDataReader Reader = Command.ExecuteReader(CommandBehavior.SequentialAccess); if (Reader.HasRows == false) return null; String FileName = Reader.GetString(0); int FileSize = int.Parse(Reader.GetString(1)); byte[] Buffer = new byte[FileSize]; long BytesRead = Reader.GetBytes(2, 0, Buffer, 0, FileSize); String BlobString = (String)Reader["_content_"]; String FieldType = Reader.GetDataTypeName(2); Type ColumnType = Reader.GetFieldType(2); return null; } catch (Exception ex) { Tools.ErrorHandler.Catch(ex); return null; } }

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  • Are there any web application frameworks usable with .NET 2.0?

    - by adhocgeek
    Apologies if this has been asked many, many times before - I'm afraid I couldn't find any satisfactory answers. I'm stuck in an environment (a bank) where, although we have VS 2008 on the development machines, production machines are locked down to the .Net framework 2.0 and SQL Server 2005. Are there any modern application frameworks that I could employ? I've looked at things like Spring.NET, PureMVC and ASP.NET MVC (S#arp Arch?), but I don't really have the luxury of time to investigate in depth. I don't want to initiate a war over which framework might be best, I just want to know if there are any I can actually use.

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  • Delphi SQLite Update causing errors to appear.

    - by NeoNMD
    I have used Inserts, selects, updates, deleted without problem all over the program but for some reason this specific section causes it to except and not run the SQL I send it. I am trying to "UPDATE SectionTable(AreaID) VALUES ('+IntToStr(ActClient.AreaID)+') WHERE SectionID='+IntToStr(iCount)" The section with the ID "iCount" exists deffinately. The ActClient.AreaID is "2" and its overwriting null data in the "SectionTable" table. What is the problem here? OpenDatabase(slDb); sltb:=sldb.GetTable('SELECT * FROM SectionTable WHERE SectionID='+IntToStr(iCount)); OutputDebugString(PAnsiChar(sltb.FieldAsString(sltb.FieldIndex['SectionID'])+sltb.FieldAsString(sltb.FieldIndex['Gender'])+sltb.FieldAsString(sltb.FieldIndex['CompetitionID']))); sSQL := 'UPDATE SectionTable(AreaID) VALUES ('+IntToStr(ActClient.AreaID)+') WHERE SectionID='+IntToStr(iCount); sldb.ExecSQL(sSQL); CloseDatabase(slDb); I get this error message appear when this is ran. --------------------------- Debugger Exception Notification --------------------------- Project CompetitionServer.exe raised exception class ESQLiteException with message 'Error executing SQL. Error [1]: SQL error or missing database. "UPDATE SectionTable(AreaID) VALUES (2) WHERE SectionID=2": near "(": syntax error'. Process stopped. Use Step or Run to continue. --------------------------- OK Help ---------------------------

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  • android SQLite vs Flat Files

    - by mixm
    hi. im creating a game right now and im a bit stuck on how to implement storage of levels. i need to be able to download level files from the internet ota. im not so familiar with transferring files ota, but i have some experience with databases (mysql). what would be a better way of storing the game's level data?

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  • Can I query inside a SQLite Transaction?

    - by CSharperWithJava
    I'm using the SQLite3 database system in the Android library. I need to execute a query during a transaction to see if there is a similar entry already there. If there is, I have to perform some other logic and adjustments before I add a new row. Can I execute a query within a transaction and get the result back immediately?

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  • IPad SQLite Push and Pull Data from external MS SQL Server DB

    - by MattyD
    This carries on from my previous post (http://stackoverflow.com/questions/4182664/ipad-app-pull-and-push-relational-data). My plan is that when the ipad application starts I am going to pull data (config data i.e. Departments, Types etc etc relational data that is used across the system) from a webhosted MS SQL Server DB via a webservice and populate it into an SQL Lite DB on the IPad. Then when I load a listing I will pull the data over the line again via a webservice and populate it into the SQL Lite db on the ipad (than just run select commands to populate the listing). My questions are: 1. What is the most efficient way to transfer data across the line via the web? Everyone seems to do it a different way. My idea is that I will have a webService for each type of data pull (e.g. RetrieveContactListing) that will query the db and than convert that data into "something" to send across the line. My question really is what is the "something" that it should be converting into? 2. Everyone talks about odata services. Is this suited for applications where complex read and writes are needed? Ive created a simple iphone app before that talked to an sql server db (i just sent my own structured xml across the line) but now with this app the data calls are going to be a lot larger so efficiency is key.

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  • Android - viewing SQLite databases on device?

    - by kape123
    Is there any tool that will allow me to browse databases on my Android device? Something like Sql Management Studio - you know GUI tool that displays databases, tables, row in tables, etc. I'm using Eclipse for development (if it is important for plug-in suggestions). Thanks!

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