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  • Can Sql Server 2005 Pivot table have nText passed into it?

    - by manemawanna
    Right bit of a simple question can I input nText into a pivot table? (SQL Server 2005) What I have is a table which records the answers to a questionnaire consisting of the following elements for example: UserID QuestionNumber Answer Mic 1 Yes Mic 2 No Mic 3 Yes Ste 1 Yes Ste 2 No Ste 3 Yes Bob 1 Yes Bob 2 No Bob 3 Yes With the answers being held in nText. Anyway what id like a Pivot table to do is: UserID 1 2 3 Mic Yes No Yes Ste Yes No Yes Bob Yes No Yes I have some test code, that creates a pivot table but at the moment it just shows the number of answers in each column (code can be found below). So I just want to know is it possible to add nText to a pivot table? As when I've tried it brings up errors and someone stated on another site that it wasn't possible, so I would like to check if this is the case or not. Just for further reference I don't have the opportunity to change the database as it's linked to other systems that I haven't created or have access too. Heres the SQL code I have at present below: DECLARE @query NVARCHAR(4000) DECLARE @count INT DECLARE @concatcolumns NVARCHAR(4000) SET @count = 1 SET @concatcolumns = '' WHILE (@count <=52) BEGIN IF @COUNT > 1 AND @COUNT <=52 SET @concatcolumns = (@concatcolumns + ' + ') SET @concatcolumns = (@concatcolumns + 'CAST ([' + CAST(@count AS NVARCHAR) + '] AS NVARCHAR)') SET @count = (@count+1) END DECLARE @columns NVARCHAR(4000) SET @count = 1 SET @columns = '' WHILE (@count <=52) BEGIN IF @COUNT > 1 AND @COUNT <=52 SET @columns = (@columns + ',') SET @columns = (@columns + '[' + CAST(@count AS NVARCHAR) + '] ') SET @count = (@count+1) END SET @query = ' SELECT UserID, ' + @concatcolumns + ' FROM( SELECT UserID, QuestionNumber AS qNum from QuestionnaireAnswers where QuestionnaireID = 7 ) AS t PIVOT ( COUNT (qNum) FOR qNum IN (' + @columns + ') ) AS PivotTable' select @query exec(@query)

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  • jackson failing to map empty array with No content to map to Object due to end of input

    - by ijabz
    I send a query to an api and map the json results to my classes using Jackson. When I get some results it works fine, but when there are no results it fails with java.io.EOFException: No content to map to Object due to end of input at org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2766) at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2709) at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1854) at com.jthink.discogs.query.DiscogsServerQuery.mapQuery(DiscogsServerQuery.java:382) at com.jthink.discogs.query.SearchQuery.mapQuery(SearchQuery.java:37)* But the thing is the api isn't returning nothing at all, so I dont see why it is failing. Here is the query: http://api.discogs.com/database/search?page=1&type=release&release_title=nude+and+rude+the+best+of+iggy+pop this is what I get back { "pagination": { "per_page": 50, "pages": 1, "page": 1, "urls": {}, "items": 0 }, "results": [] } and here is the top level object Im trying to map to public class Search { private Pagination pagination; private Result[] results; public Pagination getPagination() { return pagination; } public void setPagination(Pagination pagination) { this.pagination = pagination; } public Result[] getResults() { return results; } public void setResults(Result[] results) { this.results = results; } } Im guessing the problem is something to do with the results array being returned being blank, but cant see what Im doing wrong EDIT: The comment below was correct, although I usually receive { "pagination": { "per_page": 50, "pages": 1, "page": 1, "urls": {}, "items": 0 }, "results": [] } and in these cases there is no problem but sometimes I seem to just get an empty String. Now Im wondering if the problem is how I read from the inputstream if (responseCode == HttpURLConnection.HTTP_OK) InputStreamReader in= new InputStreamReader(uc.getInputStream()); BufferedReader br= new BufferedReader(in); while(br.ready()) { String next = br.readLine(); sb.append(next); } return sb.toString(); } although I dont read until I get the response code, is it possible that the first time I call br.ready() that I call it before it is ready, and therefore I don't read the input EDIT 2: Changing above code to simply String line; while ((line = br.readLine()) != null) { sb.append(line); } resolved the issue.

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  • Application Context in Rails

    - by Sean McMains
    Rails comes with a handy session hash into which we can cram stuff to our heart's content. I would, however, like something like ASP's application context, which instead of sharing data only within a single session, will share it with all sessions in the same application. I'm writing a simple dashboard app, and would like to pull data every 5 minutes, rather than every 5 minutes for each session. I could, of course, store the cache update times in a database, but so far haven't needed to set up a database for this app, and would love to avoid that dependency if possible. So, is there any way to get (or simulate) this sort of thing? If there's no way to do it without a database, is there any kind of "fake" database engine that comes with Rails, runs in memory, but doesn't bother persisting data between restarts?

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  • executing stored procedure from Spring-Hibernate using Annotations

    - by HanuAthena
    I'm trying to execute a simple stored procedure with Spring/Hibernate using Annotations. Here are my code snippets: DAO class: public class UserDAO extends HibernateDaoSupport { public List selectUsers(final String eid){ return (List) getHibernateTemplate().execute(new HibernateCallback() { public Object doInHibernate(Session session) throws HibernateException, SQLException { Query q = session.getNamedQuery("SP_APPL_USER"); System.out.println(q); q.setString("eid", eid); return q.list(); } }); } } my entity class: @Entity @Table(name = "APPL_USER") @Inheritance(strategy = InheritanceType.SINGLE_TABLE) @DiscriminatorFormula(value = "SUBSCRIBER_IND") @DiscriminatorValue("N") @NamedQuery(name = "req.all", query = "select n from Requestor n") @org.hibernate.annotations.NamedNativeQuery(name = "SP_APPL_USER", query = "call SP_APPL_USER(?, :eid)", callable = true, readOnly = true, resultClass = Requestor.class) public class Requestor { @Id @Column(name = "EMPL_ID") public String getEmpid() { return empid; } public void setEmpid(String empid) { this.empid = empid; } @Column(name = "EMPL_FRST_NM") public String getFirstname() { return firstname; } ... } public class Test { public static void main(String[] args) { ApplicationContext ctx = new ClassPathXmlApplicationContext( "applicationContext.xml"); APFUser user = (APFUser)ctx.getBean("apfUser"); List selectUsers = user.getUserDAO().selectUsers("EMP456"); System.out.println(selectUsers); } } and the stored procedure: create or replace PROCEDURE SP_APPL_USER (p_cursor out sys_refcursor, eid in varchar2) as empId varchar2(8); fname varchar2(50); lname varchar2(50); begin empId := null; fname := null; lname := null; open p_cursor for select l.EMPL_ID, l.EMPL_FRST_NM, l.EMPL_LST_NM into empId, fname, lname from APPL_USER l where l.EMPL_ID = eid; end; If i enter invalid EID, its returning empty list which is OK. But when record is there, following exception is thrown: Exception in thread "main" org.springframework.jdbc.BadSqlGrammarException: Hibernate operation: could not execute query; bad SQL grammar [call SP_APPL_USER(?, ?)]; nested exception is java.sql.SQLException: Invalid column name Do I need to modify the entity(Requestor.class) ? How will the REFCURSOR be converted to the List? The stored procedure is expected to return more than one record.

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  • How do I connect to mysql from php ?

    - by roberto
    Hi guys. I'm working through examples from a book on php/mysql development. I'm working on a linux/apache environment. I've set up a database and a user. I attempt to connect with this line of code: $db_server = mysql_connect($db_hostname, $db_username, $db_password); I get this error: Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'www-data'@'localhost' (using password: YES) in /var/www/hosts/dj/connect.php on line 3 unable to connect to database: Access denied for user 'www-data'@'localhost' (using password: YES) I can only guess what is happening here: I think www-data is a username for apache. Upon the database connection, the credentials being passed in to mysql are not those of my database user, but rather apache's own credentials. Is that what is happening here? How do I pass in the credentials I've defined for my user ?

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  • How to generate two XML files from a single HL7 file and insert both into two different columns as a single record?

    - by Vivek Ratnaparkhi
    I have Source Connector Type as 'File Reader' which is reading HL7 files and Destination Connector Type as 'Database Writer'. My database table has two columns Participant_Information SPR_Information I want to transform a single HL7 file into two XML files one for Participant_Information column and other for SPR_Information column and need to insert both as a single record into the database table. I'm able to insert one XML at a time but not able to find the way to insert both the XMLs as a single record into the database table. Any help is really greatly appreciated!

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  • MDX performance vs. T-SQL

    - by SubPortal
    I have a database containing tables with more than 600 million records and a set of stored procedures that make complex search operations on the database. The performance of the stored procedures is so slow even with suitable indexes on the tables. The design of the database is a normal relational db design. I want to change the database design to be multidimensional and use the MDX queries instead of the traditional T-SQL queries but the question is: Is the MDX query better than the traditional T-SQL query with regard to performance? and if yes, to what extent will that improve the performance of the queries? Thanks for any help.

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  • openquery issue in SQL Server

    - by George2
    Hello everyone, I am using SQL Server 2008 (let us call this source database server in this question discussion), and in SSMS, I have created a linked server to another SQL Server 2008 database (let us call this destination database server in this question discussion). When I issue statement -- select * from [linked server name].[database name].[dbo].[table name], error will be returned, Linked server "ZS" The OLE DB access interface "SQLNCLI10" returned "NON-CLUSTERED and NOT INTEGRATED "Index" ix_foo_basic_info_nf ", which is incorrect bookmark ordinal 0. When I issue statement -- select * from openquery([linked server name],'select * from [table name]'), there will be no errors, any ideas what is wrong? thanks in advance, George

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  • Best Installation Software?

    - by Chris
    I am interested in knowing what the best software would be to build an installation package that performs the following: (1) Installs client application (2) Detects all SQL server instances on network, allowing user to select specific database to upgrade (which would then upgrade database using an embedded SQL script) (3) Installs website on a server/location specified by user, and configures IIS 6.0 and/or 7.0 based on settings that I specify. (4) Creates a simple setup.exe - and allows user to choose installation components (listed above, i.e install client app, sql server database, and/or website), and then download selected components from remove server. I have tried NSIS - as was able to create an installation package that will download a compressed (gzip) component from a remote server, decompress the file, install the components, and then remove the gzip file. So, this worked beautifully. The part where I am stuck is to be able to perform the database upgrade and website install. Any suggestions would be great. Thanks. Chris

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  • Change My.Settings ConnectionString in runtime?

    - by Sultanen
    I have a ClickOnce deployment where i have a INI-settings file on the network file with "global" settings that is supposed to affect the program on all client computers. The problem i have is that i whant to have the Database connectionString stored in this INI file and have it read and stored in the My.Settings ConnectionString at program startup. How do i do this? The ConnectionString setting is Application scoped and therefore Read-Only, if i try to set it by My.Settings("ConnectionString") = "Source=server;Initial Catalog=database;Integrated Security=True" I get a runtime error: An error occurred creating the form. See Exception.InnerException for details. The error is: The type initializer for 'DB_lib.DB_LINQ' threw an exception. [EDIT] I got rid of the error by using the My.Settings("ConnectionString") = "Source=server;Initial Catalog=database;Integrated Security=True" in another place then the the eventtriggerd settingsLoaded method i created.. The problem is that even though the connectionstring semes to be the right, the program still connects to the "default" database that is typed in to the app.config file??

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  • Autocomplete and Dynamic Parameter Passing

    - by abcParsing
    The code below works fine using jQuery UI 1.8 and jQuery 1.4.2 $("#sid_entry_box").autocomplete( {source:"autocomplete_sid.php?database="+database_name, minLength:4, delay:1000, enable:true, cacheLength:1 }); The database name is passed as a get parameter of the php call. In this application, I have two databases selected by a radio button. Since jQuery loads and assigns this function when the document is loaded, the database name is whatever was checked at that momemnt. What I really need to pass to the php call is the following: database=$("input[name=rf_database_option]:checked").val(); Is ther ean easy to understand way to be able to pass a dynamic dom value?

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  • Deadlock error in INSERT statement

    - by Gnanam
    We've got a web-based application. There is a time-bound database operation (INSERTs and UPDATEs) in the application which takes more time to complete, hence this particular flow has been changed into Java Thread so it will not wait (block) for the complete database operation to be completed. My problem is, if more than 1 user come across this particular flow, I'm facing the following error thrown by PostgreSQL: org.postgresql.util.PSQLException: ERROR: deadlock detected Detail: Process 13560 waits for ShareLock on transaction 3147316424; blocked by process 13566. Process 13566 waits for ShareLock on transaction 3147316408; blocked by process 13560. Above error is consistently thrown in INSERT statements. Additional Information: 1) I have PRIMARY KEY defined in this table. 2) There are FOREIGN KEY references in this table. 3) Separate database connection is passed to each Java Thread. Technologies Web Server: Tomcat v6.0.10 Java v1.6.0 Servlet Database: PostgreSQL v8.2.3 Connection Management: pgpool II

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  • sql exception when transferring project from usb to c:\

    - by jello
    I'm working on a C# windows program with Visual Studio 2008. Usually, I work from school, directly on my usb drive. But when I copy the folder on my hard drive at home, an sql exception is unhandled whenever I try to write to the database. it is unhandled at the conn.Open(); line. here's the exception unhandled Database 'L:\system\project\the_project\the_project\bin\Debug\PatientMonitoringDatabase.mdf' already exists. Choose a different database name. Cannot attach the file 'C:\Documents and Settings\Administrator\My Documents\system\project\the_project\the_project\bin\Debug\PatientMonitoringDatabase.mdf' as database 'PatientMonitoringDatabase'. it's weird, because my connection string says |DataDirectory|, so it should work on any drive... here's my connection string: string connStr = "Data Source=.\\SQLEXPRESS;AttachDbFilename=|DataDirectory|\\PatientMonitoringDatabase.mdf; " + "Initial Catalog=PatientMonitoringDatabase; " + "Integrated Security=True"; what's going on here?

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  • How to return a recordset from a function

    - by Scott
    I'm building a data access layer in Excel VBA and having trouble returning a recordset. The Execute() function in my class is definitely retrieving a row from the database, but doesn't seem to be returning anything. The following function is contained in a class called DataAccessLayer. The class contains functions Connect and Disconnect which handle opening and closing the connection. Public Function Execute(ByVal sqlQuery as String) As ADODB.recordset Set recordset = New ADODB.recordset Dim recordsAffected As Long ' Make sure we are connected to the database. If Connect Then Set command = New ADODB.command With command .ActiveConnection = connection .CommandText = sqlQuery .CommandType = adCmdText End With ' These seem to be equivalent. 'Set recordset = command.Execute(recordsAffected) recordset.Open command.Execute(recordsAffected) Set Execute = recordset recordset.ActiveConnection = Nothing recordset.Close Set command = Nothing Call Disconnect End If Set recordset = Nothing End Function Here's a public function that I'm using in cell A1 of my spreadsheet for testing. Public Function Scott_Test() Dim Database As New DataAccessLayer 'Dim rs As ADODB.recordset 'Set rs = CreateObject("ADODB.Recordset") Set rs = New ADODB.recordset Set rs = Database.Execute("SELECT item_desc_1 FROM imitmidx_sql WHERE item_no = '11001'") 'rs.Open Database.Execute("SELECT item_desc_1 FROM imitmidx_sql WHERE item_no = '11001'") 'rs.Open ' This never displays. MsgBox rs.EOF If Not rs.EOF Then ' This is displaying #VALUE! in cell A1. Scott_Test = rs!item_desc_1 End If rs.ActiveConnection = Nothing Set rs = Nothing End Function What am I doing wrong?

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  • Problem: Sorting for GridView/ObjectDataSource changes depending on page

    - by user148298
    I have a GridView tied to an ObjectDataSource using paging. The paging works fine, except that the sort order changes depending on which page of the results is being viewed. This causes items to reappear on subsequent pages among other issues. I traced the problem to my DAL, which reads a page at a time and then sorts it. Obviously the sorting is going to change as the result set size changes. Is there an improvement to this algorithm. I would like to use a datareader if possible: [System.ComponentModel.DataObjectMethod(System.ComponentModel.DataObjectMethodType.Select)] public static WordsCollection LoadForCriteria(string sqlCriteria, int maximumRows, int startRowIndex, string sortExpression) { //DEFAULT SORT EXPRESSION if (string.IsNullOrEmpty(sortExpression)) sortExpression = "OrderBy"; //CREATE THE DYNAMIC SQL TO LOAD OBJECT StringBuilder selectQuery = new StringBuilder(); selectQuery.Append("SELECT"); if (maximumRows > 0) selectQuery.Append(" TOP " + (startRowIndex + maximumRows).ToString()); selectQuery.Append(" " + Words.GetColumnNames(string.Empty)); selectQuery.Append(" FROM sw_Words"); string whereClause = string.IsNullOrEmpty(sqlCriteria) ? string.Empty : " WHERE " + sqlCriteria; selectQuery.Append(whereClause); selectQuery.Append(" ORDER BY " + sortExpression); Database database = Token.Instance.Database; DbCommand selectCommand = database.GetSqlStringCommand(selectQuery.ToString()); //EXECUTE THE COMMAND WordsCollection results = new WordsCollection(); int thisIndex = 0; int rowCount = 0; using (IDataReader dr = database.ExecuteReader(selectCommand)) { while (dr.Read() && ((maximumRows < 1) || (rowCount < maximumRows))) { if (thisIndex >= startRowIndex) { Words varWords = new Words(); Words.LoadDataReader(varWords, dr); results.Add(varWords); rowCount++; } thisIndex++; } dr.Close(); } return results; }

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  • SQLiteException Unknown error

    - by -providergeoff.bruckner
    Does anyone know what this means? I'm trying to start a transaction in onActivityResult() to insert a row based on the received result. 03-05 15:39:51.937: ERROR/Database(2387): Failure 21 (out of memory) on 0x0 when preparing 'BEGIN EXCLUSIVE;'. 03-05 15:39:51.967: DEBUG/AndroidRuntime(2387): Shutting down VM 03-05 15:39:51.967: WARN/dalvikvm(2387): threadid=3: thread exiting with uncaught exception (group=0x40013140) 03-05 15:39:51.967: ERROR/AndroidRuntime(2387): Uncaught handler: thread main exiting due to uncaught exception 03-05 15:39:52.137: ERROR/AndroidRuntime(2387): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { (has extras) }} to activity {com.ozdroid/com.ozdroid.load.LoadView}: android.database.sqlite.SQLiteException: unknown error: BEGIN EXCLUSIVE; ... 03-05 15:39:52.137: ERROR/AndroidRuntime(2387): Caused by: android.database.sqlite.SQLiteException: unknown error: BEGIN EXCLUSIVE; ... 03-05 15:39:52.137: ERROR/AndroidRuntime(2387): at android.database.sqlite.SQLiteDatabase.beginTransaction(SQLiteDatabase.java:434)

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  • Achieve Rails-style migrations in MS Access VBA application

    - by avguchenko
    This is a simple way to do Rails-style migrations in a VBA application. Just add additional migrations like migration(name, sql_string, database) to run_migratons and call run_migrations somewhere in the beginning of your execution. Function migrate(signature As String, sql As String, dbs As DAO.database) Dim rs As DAO.Recordset Set rs = dbs.OpenRecordset("select * from versions where migration = '" & signature & "'") If rs.EOF Then dbs.Execute (sql) rs.AddNew rs("migration") = signature rs.Update End If End Function Function setup_versions(dbs As DAO.database) Dim t As DAO.TableDef On Error Resume Next Set t = dbs.TableDefs("versions") If Err.Number <> 0 Then dbs.Execute ("CREATE TABLE versions (migration text)") End If Err.Clear End Function Function run_migrations(dbs As DAO.database) setup_versions(dbs) migrate("20100315142400_create_table", "CREATE TABLE table_name (field1 type, field 2 type)", dbs) 'add migrations here' End Function

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  • Can't connect SQL 2008 Express to Access project

    - by Gerhard
    I just installed SQL 2008 Express and want to create an Access project (ADP). When I get to the Microsoft SQL Server Database Wizard in Access and after clicking on next to create the database I get this message: The new database wizard does not work with the version of Microsoft SQL Server to which you Access project is connected. See the Microsoft Update Web site for the latest information an downloads I can't find any solution to the problem so far. Any ideas why and how to solve this problem?

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  • postgresql table for storing automation test results

    - by Martin
    I am building an automation test suite which is running on multiple machines, all reporting their status to a postgresql database. We will run a number of automated tests for which we will store the following information: test ID (a GUID) test name test description status (running, done, waiting to be run) progress (%) start time of test end time of test test result latest screenshot of the running test (updated every 30 seconds) The number of tests isn't huge (say a few thousands) and each machine (say, 50 of them) have a service which checks the database and figures out if it's time to start a new automated test on that machine. How should I organize my SQL table to store all the information? Is a single table with a column per attribute the way to go? If in the future I need to add attributes but want to keep compatibility with old database format (ie I may not want to delete and create a new table with more columns), how should I proceed? Should the new attributes just be in a different table? I'm also thinking of replicating the database. In case of failure, I don't mind if the latest screenshots aren't backed up on the slave database. Should I just store the screenshots in its own table to simplify the replication? Thanks!

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  • Combining SQL Rows

    - by lumberjack4
    I've got SQL Compact Database that contains a table of IP Packet Headers. The Table looks like this: Table: PacketHeaders ID SrcAddress SrcPort DestAddress DestPort Bytes 1 10.0.25.1 255 10.0.25.50 500 64 2 10.0.25.50 500 10.0.25.1 255 80 3 10.0.25.50 500 10.0.25.1 255 16 4 75.48.0.25 387 74.26.9.40 198 72 5 74.26.9.40 198 75.48.0.25 387 64 6 10.0.25.1 255 10.0.25.50 500 48 I need to perform a query to show 'conversations' going on across a local network. Packets going from A - B is part of the same conversations as packets going from B - A. I need to perform a query to show the on going conversations. Basically what I need is something that looks like this: Returned Query: SrcAddress SrcPort DestAddress DestPort TotalBytes BytesA->B BytesB->A 10.0.25.1 255 10.0.25.50 500 208 112 96 75.48.0.25 387 74.26.9.40 198 136 72 64 As you can see I need the query (or series of queries) to recognize that A-B is the same as B-A and break up the byte counts accordingly. I'm not a SQL guru by any means but any help on this would be greatly appreciated.

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  • Inserting an image into sqlserver gives an "operand type clash"

    - by Termedi
    I'm trying to save an image in a sql server 2000 database. The data type of the column is image. Here is the code: Image Upload: <?php include('config.php'); if(is_uploaded_file($_FILES['userfile']['tmp_name'])) { $fileName = $_FILES['userfile']['name']; $tmpName = $_FILES['userfile']['tmp_name']; $fileSize = $_FILES['userfile']['size']; $fileType = $_FILES['userfile']['type']; $size = filesize($tmpName); set_magic_quotes_runtime(0);//to desactive the default escape spacials caracters made by PHP in the externes files $img_binaire = base64_encode(fread(fopen(str_replace("'","''",$tmpName), "r"), $size)); $query = "INSERT INTO test_image (image_name, image_content, image_size) ". "VALUES ('{$fileName}','{$img_binaire}', '{$size}')"; odbc_exec($conn, $query) or die('Error, query failed'); echo "<br>File $fileName uploaded<br>"; echo "<br>File Size: $fileSize <br>"; } ?> Image Show: <?php include('config.php'); $sql = "select * from test_image where id =2"; $rsl = odbc_exec($conn, $sql); $image_info = odbc_fetch_array($rsl); //$count = sizeof($image_info['image_content']); //header('Accept-Ranges: bytes'); //header('Content-Length: '.$image_info['image_size']); //header("Content-length: 17397"); header('Content-Type: image/jpeg'); echo base64_decode($image_info['image_content']); //echo bindec($image_info['image_content']); ?> It gives the following error: Error: Warning: odbc_exec() [function.odbc-exec]: SQL error: [Microsoft][ODBC SQL Server Driver][SQL Server]Operand type clash: text is incompatible with image, SQL state 22005 in SQLExecDirect in C:\xampp\htdocs\test\upload.php on line 25 Error, query failed What do I need to do differently?

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  • (EXCEL)VBA Spin button which steps through in an sql databases date time

    - by Gulredy
    I have an sql Database table in MySQL which have lots of rows with varied date time values. For example: 2012-08-21 10:10:00 <-- with these date there are around 12 rows 2012-08-21 15:31:00 <-- with these date there are around 5 rows 2012-08-22 11:40:00 <-- with these date there are around 10 rows 2012-08-22 12:17:00 <-- with these date there are around 9 rows 2012-08-22 12:18:00 <-- with these date there are around 7 rows 2012-08-25 07:21:00 <-- with these date there are around 6 rows If the user clicks on the SpinButton1_SpinUp() or SpinButton1_SpinDown() button then it should do the following: The SpinButton1_SpinUp() button should filter out those data from an sql table which is the next after what we are currently on now. Example: We have currently selected: 2012-08-21 15:31:00. The user hits the SpinUp button then the program selects those date from the database, which is the next higher value like this one: 2012-08-22 11:40:00. So the user hits the SpinUp button the data which is selected in the database will change from those with date: 2012-08-21 15:31:00 to those with date: 2012-08-22 11:40:00 The SpinButton1_SpinDown() will do exactly the reverse of the SpinUp button. When the user hits the SpinDown button the data which is selected in the database will change from those with date: 2012-08-21 15:31:00 to those with date 2012-08-21 10:10:00 So I think the date which we are currently on, should be stored in a variable. But on button hit not every bigger or lower data should be selected in the database, only those which are the closest bigger or the closest lower date. How can I do this? I hope I described my problem understandable. My native language is not english, so misunderstandings can occur! Please ask if you don't understand something! Thank you for reading!

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  • Self-referencing tables in Linq2Sql

    - by J-Man
    Hi, I've seen a lot of questions on self-referencing tables in Linq2Sql and how to eagerly load all child records for a particular root object. I've implemented a temporary solution by accessing all underlying properties, but you can see that this doesn't do the performance any good. The thing is though, that all records are correlated with each-other using a correlation GUID. Example below: RootElement - Id: 1 - ParentId: null - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD ChildElement1 - Id: 2 - ParentId: 1 - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD ChildElement2 - Id: 3 - ParentId: 2 - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD ChildElement1 - Id: 4 - ParentId: 2 - CorrelationId: 4D68E512-4B55-44f4-BA5A-174B630A03DD In my case, I do have access to the correlationId, so I can retrieve all of my records by performing the following query: from element in db.Elements where element.CorrelationId == '4D68E512-4B55-44f4-BA5A-174B630A03DD' select element; But, of course, I want these elements associated with each other by executing this query: from element in db.Elements where element.CorrelationId == '4D68E512-4B55-44f4-BA5A-174B630A03DD' && element.ParentId == null select element; My question is: is it possible to combine the results the first query as some sort of 'caching mechanism' for the query where I get the root element? Thanks for the input. J.

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  • Creating Membership Tables, SPROCs, Views in Attached DB

    - by azamsharp
    I have AdventureWorks database mdf file in my VS 2010 project. Is there anyway I can create Membership tables inside my AdventureWorks database. I know I can detach the database attach in SQL SERVER 2008. Create the tables and then detach. But I don't have SQL SERVER 2008 and I want to see if this can be done using command line tool. I tried this but no use: aspnet_regsql.exe -d AdventureWorks.mdf -A mr -E -S .\SQLEXPRESS Update: If I right click and see the properties of the AdventureWorks.mdf database then it shows the name as "C4BE6C8DA139A060D14925377A7E63D0_64A_10\ADVENTUREWORKSWEBFORMS\ADVENTUREWORKSWEBFORMS\ADVENTUREWORKS\APP_DATA\ADVENTUREWORKS.MDF" This is interesting!

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