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  • JSON encode MySQL results then read using jQuery

    - by silentw
    I have a database table with some rows that I want to fetch using PHP and then encode them using JSON. Currently, my database structure is the following: idcomponente | quantidade After fetching the values in PHP, I want to know how can I encode them using JSON (with multiple rows, using the same names) so I can read them using jQuery.post(). $.post('test.php',{id:id},function(data){ //READ data HERE }); Thanks in advance Edit: So far, I made this: $.post('edit/producomponentes.php',{id:id},function(data){ console.log(data); }); Logs this: [Object { componente="1", quantidade="2"}, Object { componente="3", quantidade="3"}] Now how can I go through each row and fetch their properties? (data.componente, data.quantidade)

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  • Producer Consumer Issue with Core Data

    - by Mugunth Kumar
    I've a Core Data application. In the producer thread, I pull data from a web service and store it in my object and call save. My consumer object is a table view controller that displays the same. However, the app crashes and I get NSFetchedResultsController Error: expected to find object (entity: FeedEntry; id: 0xf46f40 ; data: ) in section (null) for deletion on the console. When I debug it, everything works fine. So I understood that it's like a race issue. How is these kind of problem solved? What's the best way to design a producer-consumer app with core-data?

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  • Using PHP to place database rows into an array?

    - by Hamed Szilazi
    I was just wondering how i would be able to code perform an SQL query and then place each row into a new array, for example, lets say a table looked like the following: $people= mysql_query("SELECT * FROM friends") Output: | ID | Name | Age | --1----tom----32 --2----dan----22 --3----pat----52 --4----nik----32 --5----dre----65 How could i create a multidimensional array that works in the following way, the first rows second column data could be accessed using $people[0][1] and fifth rows third column could be accessed using $people[4][2]. How would i go about constructing this type of array? Sorry if this is a strange question, its just that i am new to PHP+SQL and would like to know how to directly access data. Performance and speed is not a issue as i am just writing small test scripts to get to grips with the language.

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  • Android Activities UI Persistence

    - by aandroid
    I need to have two activities in an Android app that can be switched between each other with UI persistence as follows: Activity A launches Activity B. User triggers some UI changes in Activity B. Activity B returns to Activity A (by a call to onBackPressed() or something similar) Activity A re-launches Activity B. I would like the changes made in step 2 to be visible in step 4. I have tried using the singleInstance activity tag on Activity B to no avail. I would also prefer a more elegant solution than simply writing all object properties to a file or SQLite table. It seems that this behaviour must be easily achievable given that Android does it automatically for calls to onBackPressed() where the parent Activity's UI is saved. Any help is much appreciated.

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  • nested linq-to-sql queries

    - by ile
    var result = ( from contact in db.Contacts join user in db.Users on contact.CreatedByUserID equals user.UserID orderby contact.ContactID descending select new ContactListView { ContactID = contact.ContactID, FirstName = contact.FirstName, LastName = contact.LastName, Company = (from field in contact.XmlFields.Descendants("Company") select field.Value).SingleOrDefault().ToString() }).Take(10); Here I described how my database tables look like. So, contacts table has one field that is xml type. In that field is stored Company filename and I need to read it. I tried it using this way: Company = (from field in contact.XmlFields.Descendants("Company") select field.Value).SingleOrDefault().ToString() }).Take(10); but I get following error: Member access 'System.String Value' of 'System.Xml.Linq.XElement' not legal on type 'System.Collections.Generic.IEnumerable`1[System.Xml.Linq.XElement]. Any solution for this? Thanks in advance, Ile

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  • I need a groovy criteria to get all the elements after i make sort on nullable inner object

    - by user1773876
    I have two domain classes named IpPatient,Ward as shown below. class IpPatient { String ipRegNo Ward ward static constraints = { ward nullable:true ipRegNo nullable:false } } class Ward { String name; static constraints = { name nullable:true } } now i would like to create criteria like def criteria=IpPatient.createCriteria() return criteria.list(max:max , offset:offset) { order("ward.name","asc") createAlias('ward', 'ward', CriteriaSpecification.LEFT_JOIN) } At present IpPatient table has 13 records, where 8 records of IpPatient doesn't have ward because ward can be null. when i sort with wardName i am getting 5 records those contain ward. I need a criteria to get all the elements after i make sort on nullable inner object.

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  • Erlang Mnesia Equivalent of SQL Select FROM WHERE Field IN (value1, value2, value3, ...)

    - by ErJab
    I have an mnesia table with fields say f1, f2, f3. Now if I were to select all the rows with the field value as V1, I would use mnesia:select and match specifications or a simple mnesia:match_object. Now I need to select all the rows which have V1, V2, V3 ... or Vn (a list of arbitrary length) as the value for field f1. In SQL I would do something like SELECT * FROM tablename WHERE f3 IN (V1, V2, V3, ... , Vn) How do I do this in mnesia?

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  • Building a subquery with ARel in Rails3

    - by Christopher
    I am trying to build this query in ARel: SELECT FLOOR(AVG(num)) FROM ( SELECT COUNT(attendees.id) AS num, meetings.club_id FROM `meetings` INNER JOIN `attendees` ON `attendees`.`meeting_id` = `meetings`.`id` WHERE (`meetings`.club_id = 1) GROUP BY meetings.id) tmp GROUP BY tmp.club_id It returns the average number of attendees per meeting, per club. (a club has many meetings and a meeting has many attendees) So far I have (declared in class Club < ActiveRecord::Base): num_attendees = meetings.select("COUNT(attendees.id) AS num").joins(:attendees).group('meetings.id') Arel::Table.new('tmp', self.class.arel_engine).from(num_attendees).project('FLOOR(AVG(num))').group('tmp.club_id').to_sql but, I am getting the error: undefined method `visit_ActiveRecord_Relation' for #<Arel::Visitors::MySQL:0x9b42180> The documentation for generating non trivial ARel queries is a bit hard to come by. I have been using http://rdoc.info/github/rails/arel/master/frames Am I approaching this incorrectly? Or am I a few methods away from a solution?

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  • Getting an odd error, MSSQL Query using `WITH` clause

    - by Aren B
    The following query: WITH CteProductLookup(ProductId, oid) AS ( SELECT p.ProductID, p.oid FROM [dbo].[ME_CatalogProducts] p ) SELECT rel.Name as RelationshipName, pl.ProductId as FromProductId, pl2.ProductId as ToProductId FROM ( [dbo].[ME_CatalogRelationships] rel INNER JOIN CteProductLookup pl ON pl.oid = rel.from_oid ) INNER JOIN CteProductLookup pl2 ON pl2.oid = rel.to_oid WHERE rel.Name = 'BundleItem' AND pl.ProductId = 'MX12345'; Is generating this error: Msg 319, Level 15, State 1, Line 5 Incorrect syntax near the keyword 'with'. If this statement is a common table expression, an xmlnamespaces clause or a change tracking context clause, the previous statement must be terminated with a semicolon. On execution only. There are no errors/warnings in the sql statement in the managment studio. Any ideas?

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  • Hibernate constraint ConstraintViolationException. Is there an easy way to ignore duplicate entries?

    - by vincent
    Basically I've got the below schema and I'm inserting records if they don't exists. However when it comes to inserting a duplicate it throws and error as I would expect. My question is whether there is an easy way to make Hibernate to just ignore inserts which would in effect insert duplicates? CREATE TABLE IF NOT EXISTS `method` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `name` varchar(10) DEFAULT NULL, PRIMARY KEY (`id`), UNIQUE KEY `name` (`name`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=2 ; SEVERE: Duplicate entry 'GET' for key 'name' Exception in thread "pool-11-thread-4" org.hibernate.exception.ConstraintViolationException: could not insert:

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  • ASP.Net MVC 2 Forms Authentication cookieless = "UseUri" while submit authorization fails

    - by rintoantony
    hi, I just started working with ASP.Net MVC 2. I created a new ASP.Net MVC application and created one vehicle controler with a database table connected with LINQ. Then created forms authentication mechanism for the application and tried to use the uri instead of cookies it was working smoothly but when i submit the form by creating a "Create" view from the controler using the utility it just dont work. The autherization got failed and asking to enter the user name and password again.I had created the authorization mechanism by adding Authorise attribute to the Controller so as to get authorized for all the actions. namespace MVCNEW.Controllers { [Authorize] public class VehicleController : Controller { But if i use the cookies instead of uri it works fine. Thanks in advance...

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  • Can I populate multiple DropDownLists from one SqlDataSource using parameters?

    - by death_au
    Basically, I have four asp:DropDownLists and I wish to populate all of them from the same table, with certain conditions. For example, I have this data source: <asp:SqlDataSource ID="ReferenceDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:mrapConnectionString1 %> SelectCommand="SELECT * FROM [reference_data] WHERE ([component] = @component)" > <SelectParameters> <asp:Parameter DefaultValue="MB" Name="component" Type="String" /> </SelectParameters> </asp:SqlDataSource> And I want to know if I can change that component parameter to be different for each of my four dropdown lists. I tried adding the following code on the DataBinding event for my DropDown: ReferenceDataSource1.SelectParameters.Remove(ReferenceDataSource1.SelectParameters["component"]); ReferenceDataSource1.SelectParameters.Add("component", "MB"); But I ironically got a StackOverflowException...

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  • syntax for single row MERGE / upsert in SQL Server

    - by Jacob
    I'm trying to do a single row insert/update on a table but all the examples out there are for sets. Can anyone fix my syntax please: MERGE member_topic ON mt_member = 0 AND mt_topic = 110 WHEN MATCHED THEN UPDATE SET mt_notes = 'test' WHEN NOT MATCHED THEN INSERT (mt_member, mt_topic, mt_notes) VALUES (0, 110, 'test') Resolution per marc_s is to convert the single row to a subquery - which makes me think the MERGE command is not really intended for single row upserts. MERGE member_topic USING (SELECT 0 mt_member, 110 mt_topic) as source ON member_topic.mt_member = source.mt_member AND member_topic.mt_topic = source.mt_topic WHEN MATCHED THEN UPDATE SET mt_notes = 'test' WHEN NOT MATCHED THEN INSERT (mt_member, mt_topic, mt_notes) VALUES (0, 110, 'test');

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  • Echo autoincrement id doubt

    - by Marcelo
    Hi, can I print the id, even if it's autoincrement ? Because the way I'm doing I'm using an empty variable for id. $id= ""; mysql_connect(localhost,$username,$password); @mysql_select_db($database) or die ("Não conectou com a base $database"); mysql_query("INSERT INTO table1(id,...) VALUES ('".$id."',....)") or die(mysql_error()); mysql_close(); echo "Your id is :"; echo "".$id; I'm trying to print the id, but it's coming blank. I checked the table and there's an id number there. How can I print it then at? Thanks for the attention

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  • How to generate Doctrine models/classes that extend a custom record class

    - by Shane O'Grady
    When I use Doctrine to generate classes from Yaml/db each Base class (which includes the table definition) extends the Doctrine_Record class. Since my app uses a master and (multiple) slave db servers I need to be able to make the Base classes extend my custom record class to force writes to go to the master db server (as described here). However if I change the base class manually I lose it again when I regenerate my classes from Yaml/db using Doctrine. I need to find a way of telling Doctrine to extend my own Base class, or find a different solution to a master/slave db setup using Doctrine. Example generated model: abstract class My_Base_User extends Doctrine_Record { However I need it to be automatically generated as: abstract class My_Base_User extends My_Record { I am using Doctrine 1.2.1 in a new Zend Framework 1.9.6 application if it makes any difference.

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  • Any way to select without causing locking in MySQL?

    - by Shore
    Query: SELECT COUNT(online.account_id) cnt from online; But online table is also modified by an event, so frequently I can see lock by running show processlist. Is there any grammar in MySQL that can make select statement not causing locks? And I've forgotten to mention above that it's on a MySQL slave database. After I added into my.cnf:transaction-isolation = READ-UNCOMMITTED the slave will meet with error: Error 'Binary logging not possible. Message: Transaction level 'READ-UNCOMMITTED' in InnoDB is not safe for binlog mode 'STATEMENT'' on query So, is there a compatible way to do this?

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  • Storing And Using Microsoft User Account Credentials in MS SQL Srv 2008 Database

    - by instantmusic
    I'm not exactly positive how to word this for the sake of the title so please forgive me. Also I can't seem to figure out how to even google this question, so I'm hoping that I can get a lead in the right direction. Part of my software(VB.NET App) requires the ability to access/read/write a shared network folder. I have an option for the user to specify any credentials that might be needed to access said folder. I want to store these credentials given in the MS SQL Database as part of the config(I have a table which contains configuration). My concern is that the password for the user account will be unencrpyted. Yet, if I encrypt the password the VB.NET App And/Or database will be unable to use the credentials for file i/o operations unless the Password is unencrypted before use. I'm fishing for suggestions on how to better handle this situation.

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  • quick mysql query problem

    - by Haroldo
    sorry, i dont like to ask such instance specific questions but this is driving me MENTAL! there's gotta be something obvious i'm missing: table: |ven_name|varchar(150)|No| |ven_sd|varchar(90)|Yes|NULL |ven_details|varchar(3000)|Yes|NULL |ven_tel|varchar(30)|Yes|NULL |ven_email|varchar(50)|Yes|NULL |ven_address|varchar(300)|Yes|NULL |lat|decimal(9,6)|Yes|NULL |long|decimal(9,6)|Yes|NULL |pub|tinyint(4)|Yes|NULL |bar|tinyint(4)|Yes|NULL |club|tinyint(4)|Yes|NULL |img_added|tinyint(4)|Yes|NULL query: INSERT INTO ven (img_added, ven_name, ven_sd, ven_tel, ven_email, ven_address, lat, long, pub, ven_details) VALUES (1, 'aaa', 'aaa', 'aaa', 'aaa', 'aaa', 100, 156, 1, 'aaa') error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'long, pub, ven_details) VALUES(1, 'aaa', 'aaa', '0117 9246449', 'aaa', 'aaa', 10' at line 1

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  • How to select difference using sql?

    - by ganuke
    I wrote a sql query to retrieve data as follows: SELECT (MAX (b.filledqty) - MAX (a.filledqty)) AS filledtoday FROM clientordermas a, clientordermas b WHERE a.clordid = 'w9110126' AND b.clordid = 'w9110126' AND (SELECT max(a.price) FROM clientordermas a WHERE a.clordid = 'w9110126') < 1000; There are three records in the table for the given clordid with price values 800, 900 1200. So, what I need is to get the difference between 1200 and 900 which is 300. But, the above statement always returns 0. What I should get is MAX (b.filledqty) retuns 1200 and MAX (a.filledqty) retuns 900. But it is not happening. This is not the exact problem I am facing but a simplified version of it. Can someone please help?

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  • Cakephp, i18n, Retrieve translation records for associated models

    - by ion
    Quoting from the cakephp Book (ver 1.3): Note that only fields of the model you are directly doing find on will be translated. Models attached via associations won't be translated because triggering callbacks on associated models is currently not supported. Has anyone come up with a solution for this??? If not could you give me some pointers concerning the following simple scenario. I have 2 models: Project, Category. Project HABTM Category I have properly set up i18n table and I have a few entries in the db, all translated. When I retrieve a project it does retrieve the translation but not the translated category because as it says in the cakephp book models attached via associations won't be translated. Any help would be appreciated

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  • Optimizing ROW_NUMBER() in SQL Server

    - by BlueRaja
    We have a number of machines which record data into a database at sporadic intervals. For each record, I'd like to obtain the time period between this recording and the previous recording. I can do this using ROW_NUMBER as follows: WITH TempTable AS ( SELECT *, ROW_NUMBER() OVER (PARTITION BY Machine_ID ORDER BY Date_Time) AS Ordering FROM dbo.DataTable ) SELECT [Current].*, Previous.Date_Time AS PreviousDateTime FROM TempTable AS [Current] INNER JOIN TempTable AS Previous ON [Current].Machine_ID = Previous.Machine_ID AND Previous.Ordering = [Current].Ordering + 1 The problem is, it goes really slow (several minutes on a table with about 10k entries) - I tried creating separate indicies on Machine_ID and Date_Time, and a single joined-index, but nothing helps. Is there anyway to rewrite this query to go faster?

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  • Handling undo and edit flag on window with several model objects

    - by Rui Pacheco
    Hi, I've a window that will hold several instances of a model object, listed in a table. The model object is updated using a text view. What is the best way to keep the edit flag and undo manager in synch with the content of the different model objects? I'm thinking creating an instance of the undo manager on the model object and manually set the undo manager for the text view every time the user choses a new model object. Does the undo manager also handle the edited flag?

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  • Problem with migrating a model in ruby

    - by Shreyas Satish
    I run script/generate model query edit query.rb in models.. class Query < ActiveRecord::Base #I even tried Migrations instead of Base def sef.up create table :queries do|t| t.string :name end end def self.down drop_table :queries end end ,run rake db:migrate. and what I see in db is this: mysql> desc queries; +------------+----------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +------------+----------+------+-----+---------+----------------+ | id | int(11) | NO | PRI | NULL | auto_increment | | created_at | datetime | YES | | NULL | | | updated_at | datetime | YES | | NULL | | +------------+----------+------+-----+---------+----------------+ Where is the "name" field? HELP ! Cheers !

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  • Make is more OOPey - good structure?

    - by Tom
    Hi, I just want advice on whether I could improve structure around a particular class which handles all disk access functions The structure of my program is that I have a class called Disk which gets data from flatfiles and databases on a, you guessed it, hard disk drive. I have functions like LoadTextFileToStringList, WriteStringToTextFile, DeleteLineInTextFile etc which are kind of "generic methods" In the same class I also have some more specific methods such as GetXFromDisk where X might be a particular field in a database table/query. Should I separate out the generic methods from the specialised. Should I make another class which inherits the generic methods. At the moment my class is static as there is no need to have an internal state of the class. I'm not really OOPing am I? Thanks Thomas

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  • cakephp filter index pages according to foreign keys

    - by Marki
    Hi there, I'm pretty new to CakePHP and was missing a crucial feature not generated as scaffold: filtering. What do I have to do to provide dropdowns or multi-selects on the index pages for each field that is a (foreign) key, thereby allowing to filter the table ("OR" inside multi-select, "AND" between different multi-selects, if any)? From what my websearch has shown me there are many more people trying to accomplish the same thing, although I couldn't find anything that would work for me because either they have text fields and do wildcard filtering, or the plugins they propose only work for 1.2 whereas i now started with 1.3 etc. etc. Can someone alleviate the confusion and maybe present some working code or direct me to the definitive guide[tm] where this matter has been solved? Thx

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