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  • Java Insert Help...???

    - by El Classico
    I am trying to do an Insert, Update and Delete on a table in MS Access. Everything works fine for a SELECT statement. But when doing the other three operations, I don't seem to get any errors, but the actions are not reflected on to the DB. Please help... THe INSERT statement is as follows: PreparedStatement ps = con.prepareStatement("INSERT INTO Student VALUES (?, ?, ?, ?, ?, ?, ?, ?)"); ps.setInt(1,1); ps.setString(2,"ish"); ps.setInt(3,100); ps.setInt(4,100); ps.setInt(5,100); ps.setInt(6,300); ps.setInt(7,100); ps.setString(8,"A"); ps.executeUpdate(); Also may I know why PreparedStatement is used except for SELECT statement...

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  • Codeigniter: State Machine how to

    - by Kevin Brown
    I created a db row called "activity_state" to denote which things a user has and hasn't completed. The problem is, I don't know how to use it... How can I use this single row to determine what a user has done? ie. have they completed their profile?, have they completed an assignment? Someone mentioned using it as a bitfield, but I'm unfamiliar with that. Is that a good idea? Any ideas?

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  • Preventing SQL injecting in a database class

    - by Josh
    I'm building a database class and thought it'd be a good idea to incorporate some form of SQL injection prevention (duh!). Here's the method that runs a database query: class DB { var $db_host = 'localhost'; var $db_user = 'root'; var $db_passwd = ''; var $db_name = 'whatever'; function query($sql) { $this->result = mysql_query($sql, $this->link); if(!$this->result) { $this->error(mysql_error()); } else { return $this->result; } } } There's more in the class than that but I'm cutting it down just for this. The problem I'm facing is if I just use mysql_real_escape_string($sql, $this->link); then it escapes the entire query and leads to a SQL syntax error. How can I dynamically find the variables that need to be escaped? I want to avoid using mysql_real_escape_string() in my main code blocks, i'd rather have it in a function. Thanks.

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  • .NET project: unified wrapper for object databases.

    - by Steve
    I am considering doing a project which would provide unified API and tools (import/export, etc.) for object databases (e.g. Caché, Objectivity) for .NET. It would provide: schema generation from CLR classes, generation of C# classes from given OODBMs schema, API for deleting, creating and updating objects, Linq provider, API for calling object's methods on DB server, some of OODBMs provide some kind of SQL support, so API for this, providers for Caché and Objectivity in first phase. Does any project which implements any of above exist? Can this be achieved with NHibernate dialects? or are OODBMs so different than RDBMs that it worth doing separate framework for them?

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  • Linq to Entities: cannot be translated into a store expression

    - by FM250
    I am trying to execute this query, but I am getting an error: cannot be translated into a store expression. If I can't do it this way how can I implement it? I am using C#. I am trying to display training records if the date taken is not this year. Any suggestion is highly appreciated. tr = from l in t.Trainees where !db.UserTrainings.Any(ut => ut.Trainees.TraineeId == l.TraineeId && ut.Passed == true && ut.DateTaken >= l.DateEnded.Value.AddYears(-1)) ...... rest of the query.

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  • Sort Array in PHP

    - by DonCroce
    I have a script which gets some values from a DB. The structure of the vars is as the following: $dump["likes"] = 1234; $likes["data"][$i]["name"] = "ABCDEFG"; for($i=0;$i<=$max;$i++){ $data[$i]["likes"] = $dump["likes"]; $data[$i]["name"] = $likes["data"][$i]["name"]; } //Print Here Sorted array (highest value in "like" first) I just need a way to find out in which entry the biggest "likes" are :) So far i have tried array_multisort, but it showed me "inconsistent size" or some error... Thanks for all your help!

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  • memory leak in Zend_Db_Table_Row?

    - by Vincenzo
    This is the code I have: <?php $start = memory_get_usage(); $table = new Zend_Db_Table('user'); for ($i = 0; $i < 5; $i++) { $row = $table->createRow(); $row->name = 'Test ' . $i; $row->save(); unset($row); echo (memory_get_usage() - $start) . "\n"; } This is what I see: 90664 93384 96056 98728 101400 Isn't it a memory leak? When I have 500 objects to insert into DB in one script I'm getting memory overflow. Can anyone help?

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  • Delete from empty table taking forver

    - by Will
    Hello, I have an empty table that previously had a large amount of rows. The table has about 10 columns and indexes on many of them, as well as indexes on multiple columns. DELETE FROM item WHERE 1=1 This takes approximately 40 seconds to complete SELECT * FROM item this takes 4 seconds. The execution plan of SELECT * FROM ITEM shows the following; SQL> select * from midas_item; no rows selected Elapsed: 00:00:04.29 Execution Plan ---------------------------------------------------------- 0 SELECT STATEMENT Optimizer=CHOOSE (Cost=19 Card=123 Bytes=73 80) 1 0 TABLE ACCESS (FULL) OF 'MIDAS_ITEM' (Cost=19 Card=123 Byte s=7380) Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 5263 consistent gets 5252 physical reads 0 redo size 1030 bytes sent via SQL*Net to client 372 bytes received via SQL*Net from client 1 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 0 rows processed any idea why these would be taking so long and how to fix it would be greatly appreciated!!

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  • Good JDBC pattern

    - by Java Developer
    What is the good practice for database operation in Java application? Do you construct the DML syntax in the Java code and send the statements to DB engine for execution, or you just collect the parameters and then make a call to stored procedure with the parameters via java code? or neither because that's just not how to do it? can anyone give an example of a full database utility classes to do database operations in Java app? also what about the transaction manager? My assignment is to make database operation that is modular in Java. Thanks

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  • How can I determine if a given git hash exists on a given branch?

    - by pinko
    Background: I use an automated build system which takes a git hash as input, as well as the name of the branch on which that hash exists, and builds it. However, the build system uses the hash alone to check out the code and build it -- it simply stores the branch name, as given, in the build DB metadata. I'm worried about developers accidentally providing the wrong branch name when they kick off a build, causing confusion when people are looking through the build history. So how can I confirm, before passing along the hash and branch name to the build system, that the given hash does in fact come from the given branch?

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  • No route matches - after login attempt - even though the route exists?

    - by datorum
    I am working on a rails application and added a simple login system according to a book. I created the controller admin: rails generate controller admin login logout index It added the following routes to routes.db get "admin/login" get "admin/logout" get "admin/index" I can got to http://localhost:3000/admin/login there is no problem at all. But when I try to login I get: No route matches "/admin/login"! Now, the first confusing part is that the "login" method of my AdminController is not executed at all. The second confusing part is that this code works like a charm - redirects everything to /admin/login: def authorize unless User.find_by_id(session[:user_id]) flash[:notice] = "you need to login" redirect_to :controller => 'admin', :action => 'login' end end Sidenotes: I restarted the server several times. I tried a different browser - to be sure there is no caching problem.

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  • Using Session to limit form submission by time

    - by user1733850
    I have spent over 2 hours scouring the net trying to figure this out. I am trying to stop multiple form submission any faster than 60 seconds. Here is what I am using. session_start(); if (!isset($_SESSION['last_submit'])) $_SESSION['last_submit'] = time(); if (time()-$_SESSION['last_submit'] < 60) die('Post limit exceeded. Please wait at least 60 seconds'); else $_SESION['last_submit'] = time(); I found this bit here on the site but haven't been able to figure anything else out as far as getting it to work. I have this bit of code on my page at the beginning that does the DB query with the previous pages POST results. Do I need to set $last_submit to a certain value? Any help is appreciated.

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  • Hibernate: delete many-to-many association

    - by Bar
    I have two tables with the many-to-many association. — DB fragment: loads Id Name sessions Id Date sessionsloads LoadId SessionId — Hibernate mapping fragments: /* loads.hbm.xml */ <set name="sessions" table="sessionsloads" inverse="true"> <key column="LoadId" /> <many-to-many column="SessionId" class="Session" /> </set> … /* sessions.hbm.xml */ <set name="loads" table="sessionsloads"> <key column="SessionId" /> <many-to-many column="LoadId" class="Load" /> </set> In order to remove one entry from the association table sessionsloads, I execute this code: Session session = sessionDao.getObject(sessionId); Load load = loadDao.getObject(loadId); load.getSessions().remove(session); loadDao.saveObject(load); But, after launching, this code change nothing. What's the right way to remove an association?

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  • char '0x8' what character is this?

    - by OHHAI
    I have a large amount of data in a database. When I attempt to read a certain portion of the data and generate some xml and send it to a webservice I get the following exception... The char '0x8' in 'java.lang.IllegalArgumentException'. I'm guessing it is some bad data, as it has worked perfectly for about 7 months but now some user uploaded some new data that seems to have some issues. Anyone know what character this is so I can just run a sql query and clean it from the db? Thanks in advance.

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  • Edit very large sql dump/text file (on linux)

    - by geo
    I have to import a large mysql dump (up to 10G). However the sql dump already predefined with a database structure with index definition. I want to speed up the db insert by removing the index and table definition. That means I have to remove/edit the first few lines of a 10G text file. What is the most efficient way to do this on linux? Programs that require loading the entire file into RAM will be an overkill to me.

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  • Partially fattening a list

    - by alj
    This is probably a really silly question but, given the example code at the bottom, how would I get a single list that retain the tuples? (I've looked at the itertools but it flattens everything) What I currently get is: ('id', 20, 'integer') ('companyname', 50, 'text') [('focus', 30, 'text'), ('fiesta', 30, 'text'), ('mondeo', 30, 'text'), ('puma', 30, 'text')] ('contact', 50, 'text') ('email', 50, 'text') what I would like is a single level list like: ('id', 20, 'integer') ('companyname', 50, 'text') ('focus', 30, 'text') ('fiesta', 30, 'text') ('mondeo', 30, 'text') ('puma', 30, 'text') ('contact', 50, 'text') ('email', 50, 'text') def getproducts(): temp_list=[] product_list=['focus','fiesta','mondeo','puma'] #usually this would come from a db for p in product_list: temp_list.append((p,30,'text')) return temp_list def createlist(): column_title_list = ( ("id",20,"integer"), ("companyname",50,"text"), getproducts(), ("contact",50,"text"), ("email",50,"text"), ) return column_title_list for item in createlist(): print item Thanks ALJ

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  • Using a database with C#

    - by Mike
    I have been trying to do something that I think would be really easy but have never used C# before and am having trouble with the details. I simple want to use a sql database with Visual C# Express 2008. For testing purposes I have a datagrid on my form that can reflect changes to the db. If i use this: codesTableAdapter.Fill(dataSet1.codes); The datagrid(dataset) will fill with the info from the sql database. If i then do something like this: codesTableAdapter.InsertQuery(txtCode.Text,txtName.Text); codesTableAdapter.Fill(dataSet1.codes); codesTableAdapter.Update(dataSet1); dataSet1.AcceptChanges(); The datagrid reflects the changes but if close the program and go to the database the changes are not there. When I open the program again the changes are not there. I have a feeling this isn't too clear as my understanding here is very low so please let me know what other info is needed. Thanks

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  • PHP Try and Catch for SQL Insert

    - by meme
    I have a page on my website (high traffic) that does an insert on every page load. I am curious of the fastest and safest way to (catch an error) and continue if the system is not able to do the insert into MySQL. Should I use try/catch or die or something else. I want to make sure the insert happens but if for some reason it can't I want the page to continue to load anyway. ... $db = mysql_select_db('mobile', $conn); mysql_query("INSERT INTO redirects SET ua_string = '$ua_string'") or die('Error #10'); mysql_close($conn); ...

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  • How to insert large files in mysql database using php? [closed]

    - by anjan
    Hi! I want to upload a large file of size 10M max to my mysql database. Using .htaccess i changed the PHP's own file upload limit to "10485760" = 10M, i am able to upload files upto 10M size without any problem. But i can not insert the file in database if it is more that 1M in size. i am using file_get_contents to read all file data and pass it to the insert query as a string to be inserted into a LONGBLOB field. But files with more than 1M size is not being added to database, though i can use print_r($_FILES) to examine that the file uploaded correctly. Any help will be appreciated and i will need it within next 6 hours. So, please help! best regards, Anjan * This is a duplicate of http://stackoverflow.com/questions/492549/how-can-i-insert-large-files-in-mysql-db-using-php *

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  • ActiveRecord validates... custom field name.

    - by Dmitriy Likhten
    I would like to fix up some error messages my site generates. Here is the problem: class Brand < ActiveRecord::Base validates_presence_of :foo ... end My goal is to make a message "Ticket description is required" instead of "Foo is required" or may not be blank, or whatever. The reason this is so important is because lets say previously the field was ticket_summary. That was great and the server was coded to use that, but now due to crazy-insane business analysts it has been determined that ticket_summary is a poor name, and should be ticket_description. Now I don't necessarily want to have my db be driven by the user requirements for field names, especially since they can change frequently without functionality changes. Is there a mechanism for providing this already?

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  • Getting Results from a Web SQL database

    - by andrew8088
    I'm playing around with the new Web SQL databases. Is there a way to return results from a SELECT statement? Here's my example: function getTasks (list) { db.transaction(function (tx) { list = list || 'inbox'; tx.executeSql("SELECT * FROM tasklist WHERE list = ?", [list], function (tx, results) { var retObj = [], i, len = results.rows.length; for ( i = 0; i < len; i++ ) { retObj[i] = results.rows.item(i); } return retObj; }); }); } The getTasks function is returning before the success callback does; is there a way to get the results out of the executeSql method, or do I have to do all the processing within the callback?

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  • dojo if i have only the value of the Column Portlet, Can i place to GridContainer?

    - by user3639054
    i faced with problem situation. I don't know even how to solve the problem. So i would like to get advice. i saved value of Column Portlet and value of nbZones GridContainer in MongoDB. My situation is that if i get value of Column and ROW Portlet and value of nbZones GridContainer in MongoDB, Portlet and GridContainer value was taken from the DB to the location of the original place of it? my MongoDB Data { "GridSeq":1, "nbZones":3, "Portlet":[ { "row":1, "col":0 } ] } i calculate row value following code. var perColumn=[]; var id=portlet.get('id'); var col = portlet.get('column'); if (perColumn[col] !== undefined) { perColumn[col]++; } else { perColumn[col] = 0; } var row = perColumn[col]; console.log('id:'+id + ",row: " + row + ",col: " + col);

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  • count number of rows to be affected before update in trigger

    - by tomaszsobczak
    Hi, I want to know number of rows that will be affected by UPDATE query in BEFORE per statement trigger . Is that possible? The problem is that i want to allow only queries that will update up to 4 rows. If affected rows count is 5 or more i want to raise error. I don't want to do this in code because i need this check on db level. Is this at all possible? Thanks in advance for any clues on that

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  • Rails 3 many-to-many query on includes or joins

    - by Myat
    I have three models User, Activity and ActivityRecord. class User < ActiveRecord::Base # Include default devise modules. Others available are: # :token_authenticatable, :confirmable, # :lockable, :timeoutable and :omniauthable devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable # Setup accessible (or protected) attributes for your model attr_accessible :first_name, :last_name, :email, :gender, :password, :password_confirmation, :remember_me # attr_accessible :title, :body has_many :activities has_many :activity_records , :through=> :activities end class Activity < ActiveRecord::Base attr_accessible :point, :title belongs_to :user has_many :activity_records end class ActivityRecord < ActiveRecord::Base attr_accessible :activity_id belongs_to :activity scope :today, lambda { where("DATE(#{'activity_records'}.created_at) = '#{Date.today.to_s(:db)}'")} end I would like to query all activities for a user together with the count for their respective activity records for today. For example, after querying and converting to json format, I would like to have something like below [ { id: 23 title: "jogging", point: "5", today_activity_records_count: 1, }, { id: 12 title: "diet dinner", point: "2", today_activity_records_count: 0, }, ] Please kindly guide me how I can achieve that. Thanks

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  • SQL Server 2008. Allow Remote Connections?

    - by George
    I have SQL Server 2000 and 2008 installed on a Windows XP Pro box. I can connect to both db instances locally. From another box, a Windows 7 box, I can connect to the SQL 2000 instance on the first box but I cannot connect to the 2008 instance using the same SQL Server authentication credentials that worked locally. Allow Remote Connections is set to TRUE for both the 2000 and 2008 database instances. What else can I look for to be able to connect to the remote 2008 instance from the Windows 7 box? I am trying to connect using Mgt Studio 2008.

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