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  • how to generate primary key values while inserting data into table through pl/sql stored procedure

    - by thulasi policherla
    hi friends, I am trying to insert data into particular table through pl/sql stored procedure,my requirement is while inserting i should generate PRIMARY KEY values for particular column and also i should return that PRIMARY KEY value to output and one more thing is that for another column i should validate my string such that it should contain only characters not integers. please help me in writing code for the above requirement Thanks and regards thulasi policherla

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  • Generate data for an application

    - by Duncan Benoit
    Hi there If your planing to build an application but you don't have enough data to fill a database, how you will generate some ? Do you know any application which can generate data based on some criterias and export it later in MySQL database? Thanks :)

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  • Set reference = null in finally block?

    - by deamon
    A colleague of mine sets reference to null in finally blocks. I think this is nonsense. public Something getSomething() { JDBCConnection jdbc=null; try { jdbc=JDBCManager.getConnection(JDBCTypes.MYSQL); } finally { JDBCManager.free(jdbc); jdbc=null; // <-- Useful or not? } } What do you think of it?

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  • JSON datetime to SQL Server database via WCF

    - by moikey
    I have noticed a problem over the past couple of days where my dates submitted to an sql server database are wrong. I have a webpage, where users can book facilities. This webpage takes a name, a date, a start time and an end time(BookingID is required for transactions but generated by database), which I format as a JSON string as follows: {"BookingEnd":"\/Date(2012-26-03 09:00:00.000)\/","BookingID":1,"BookingName":"client test 1","BookingStart":"\/Date(2012-26-03 10:00:00.000)\/","RoomID":4} This is then passed to a WCF service, which handles the database insert as follows: [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, UriTemplate = "createbooking")] void CreateBooking(Booking booking); [DataContract] public class Booking { [DataMember] public int BookingID { get; set; } [DataMember] public string BookingName { get; set; } [DataMember] public DateTime BookingStart { get; set; } [DataMember] public DateTime BookingEnd { get; set; } [DataMember] public int RoomID { get; set; } } Booking.svc public void CreateBooking(Booking booking) { BookingEntity bookingEntity = new BookingEntity() { BookingName = booking.BookingName, BookingStart = booking.BookingStart, BookingEnd = booking.BookingEnd, RoomID = booking.RoomID }; BookingsModel model = new BookingsModel(); model.CreateBooking(bookingEntity); } Booking Model: public void CreateBooking(BookingEntity booking) { using (var conn = new SqlConnection("Data Source=cpm;Initial Catalog=BookingDB;Integrated Security=True")) using (var cmd = conn.CreateCommand()) { conn.Open(); cmd.CommandText = @"IF NOT EXISTS ( SELECT * FROM Bookings WHERE BookingStart = @BookingStart AND BookingEnd = @BookingEnd AND RoomID= @RoomID ) INSERT INTO Bookings ( BookingName, BookingStart, BookingEnd, RoomID ) VALUES ( @BookingName, @BookingStart, @BookingEnd, @RoomID )"; cmd.Parameters.AddWithValue("@BookingName", booking.BookingName); cmd.Parameters.AddWithValue("@BookingStart", booking.BookingStart); cmd.Parameters.AddWithValue("@BookingEnd", booking.BookingEnd); cmd.Parameters.AddWithValue("@RoomID", booking.RoomID); cmd.ExecuteNonQuery(); conn.Close(); } } This updates the database but the time ends up "1970-01-01 00:00:02.013" each time I submit the date in the above json format. However, when I do a query in SQL server management studio with the above date format ("YYYY-MM-DD HH:MM:SS.mmm"), it inserts the correct values. Also, if I submit a millisecond datetime to the wcf, the correct date is being inserted. The problem seems to be with the format I am submitting. I am a little lost with this problem. I don't really see why it is doing this. Any help would be greatly appreciated. Thanks.

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  • IN 'mytextfile.txt' syntax - access

    - by I__
    i would like to use this syntax to update a table in access based on data from a txtfile. fenton in his comments on this answer: http://stackoverflow.com/questions/2992168/read-text-file-line-by-line-and-insert-update-values-in-table/2992337#2992337 said that this is possible and i would like to see the exact syntax please

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  • How can I improve my select query for storing large versioned data sets?

    - by Jason Francis
    At work, we build large multi-page web applications, consisting mostly of radio and check boxes. The primary purpose of each application is to gather data, but as users return to a page they have previously visited, we report back to them their previous responses. Worst-case scenario, we might have up to 900 distinct variables and around 1.5 million users. For several reasons, it makes sense to use an insert-only approach to storing the data (as opposed to update-in-place) so that we can capture historical data about repeated interactions with variables. The net result is that we might have several responses per user per variable. Our table to collect the responses looks something like this: CREATE TABLE [dbo].[results]( [id] [bigint] IDENTITY(1,1) NOT NULL, [userid] [int] NULL, [variable] [varchar](8) NULL, [value] [tinyint] NULL, [submitted] [smalldatetime] NULL) Where id serves as the primary key. Virtually every request results in a series of insert statements (one per variable submitted), and then we run a select to produce previous responses for the next page (something like this): SELECT t.id, t.variable, t.value FROM results t WITH (NOLOCK) WHERE t.userid = '2111846' AND (t.variable='internat' OR t.variable='veteran' OR t.variable='athlete') AND t.id IN (SELECT MAX(id) AS id FROM results WITH (NOLOCK) WHERE userid = '2111846' AND (t.variable='internat' OR t.variable='veteran' OR t.variable='athlete') GROUP BY variable) Which, in this case, would return the most recent responses for the variables "internat", "veteran", and "athlete" for user 2111846. We have followed the advice of the database tuning tools in indexing the tables, and against our data, this is the best-performing version of the select query that we have been able to come up with. Even so, there seems to be significant performance degradation as the table approaches 1 million records (and we might have about 150x that). We have a fairly-elegant solution in place for sharding the data across multiple tables which has been working quite well, but I am open for any advice about how I might construct a better version of the select query. We use this structure frequently for storing lots of independent data points, and we like the benefits it provides. So the question is, how can I improve the performance of the select query? I assume the nested select statement is a bad idea, but I have yet to find an alternative that performs as well. Thanks in advance. NB: Since we emphasize creating over reading in this case, and since we never update in place, there doesn't seem to be any penalty (and some advantage) for using the NOLOCK directive in this case.

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  • jquery exit function in ajax call

    - by Raphappa
    I have a javascript function. and in there, I insert a ajax call function using jquery. depends on ajax call result, I want to exit hi function. is there anyway to do this? function hi() { $.ajax({ url: "/shop/haveItem", type: "GET", async:false, success: function(data){ if(data == '1') //exit hi() function } }); //some executable code when data is not '1' ... }

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  • Howoto get id of new record after model.save

    - by tonymarschall
    I have a model with the following db structure: mysql> describe units; +------------+----------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +------------+----------+------+-----+---------+----------------+ | id | int(11) | NO | PRI | NULL | auto_increment | | name | varchar(128) | NO | | NULL | | | created_at | datetime | NO | | NULL | | | updated_at | datetime | NO | | NULL | | +------------+----------+------+-----+---------+----------------+ 7 rows in set (0.00 sec) After creating a new record an saving i can not get the id of the record. 1.9.3p194 :001 > unit = Unit.new(:name => 'test') => #<Unit id: nil, name: "test", created_at: nil, updated_at: nil> 1.9.3p194 :002 > unit.save (0.2ms) BEGIN SQL (0.3ms) INSERT INTO `units` (`created_at`, `name`, `updated_at`) VALUES ('2012-08-31 23:48:12', 'test', '2012-08-31 23:48:12') (144.6ms) COMMIT => true 1.9.3p194 :003 > unit.inspect => "#<Unit id: nil, name: \"test\", created_at: \"2012-08-31 23:48:12\", updated_at: \"2012-08-31 23:48:12\">" # unit.rb class Unit < ActiveRecord::Base attr_accessible :name end # migration class CreateUnits < ActiveRecord::Migration def change create_table :units do |t| t.string :name, :null => false t.timestamps end end end Tried this with other models and have the same result (no id). Data is definitily saved and i can get data with Unit.last Another try with Foo.id = nil # /var/www# rails g model Foo name:string invoke active_record create db/migrate/20120904030554_create_foos.rb create app/models/foo.rb invoke test_unit create test/unit/foo_test.rb create test/fixtures/foos.yml # /var/www# rake db:migrate == CreateFoos: migrating ===================================================== -- create_table(:foos) -> 0.3451s == CreateFoos: migrated (0.3452s) ============================================ # /var/www# rails c Loading development environment (Rails 3.2.8) 1.9.3p194 :001 > foo = Foo.new(:name => 'bar') => #<Foo id: nil, name: "bar", created_at: nil, updated_at: nil> 1.9.3p194 :002 > foo.save (0.2ms) BEGIN SQL (0.4ms) INSERT INTO `foos` (`created_at`, `name`, `updated_at`) VALUES ('2012-09-04 03:06:26', 'bar', '2012-09-04 03:06:26') (103.2ms) COMMIT => true 1.9.3p194 :003 > foo.inspect => "#<Foo id: nil, name: \"bar\", created_at: \"2012-09-04 03:06:26\", updated_at: \"2012-09-04 03:06:26\">" 1.9.3p194 :004 > Foo.last Foo Load (0.5ms) SELECT `foos`.* FROM `foos` ORDER BY `foos`.`id` DESC LIMIT 1 => #<Foo id: 1, name: "bar", created_at: "2012-09-04 03:06:26", updated_at: "2012-09-04 03:06:26">

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  • Rails SQL Query with find

    - by Nave
    I want this SQL query to be written in rails controller using find select id,name from questions where id not in (select question_id from levels_questions where level_id=15) How will I do this?I am using Rails framework and MySQL db thanks in advance.

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  • How come Java doesn't accept my LinkedList in a Generic, but accepts its own?

    - by master chief
    For a class assignment, we can't use any of the languages bultin types, so I'm stuck with my own list. Anyway, here's the situation: public class CrazyStructure <T extends Comparable<? super T>> { MyLinkedList<MyTree<T>> trees; //error: type parameter MyTree is not within its bound } However: public class CrazyStructure <T extends Comparable<? super T>> { LinkedList<MyTree<T>> trees; } Works. MyTree impleements the Comparable interface, but MyLinkedList doesn't. However, Java's LinkedList doesn't implement it either, according to this. So what's the problem and how do I fix it? MyLinkedList: public class MyLinkedList<T extends Comparable<? super T>> { private class Node<T> { private Node<T> next; private T data; protected Node(); protected Node(final T value); } Node<T> firstNode; public MyLinkedList(); public MyLinkedList(T value); //calls node1.value.compareTo(node2.value) private int compareElements(final Node<T> node1, final Node<T> node2); public void insert(T value); public void remove(T value); } MyTree: public class LeftistTree<T extends Comparable<? super T>> implements Comparable { private class Node<T> { private Node<T> left, right; private T data; private int dist; protected Node(); protected Node(final T value); } private Node<T> root; public LeftistTree(); public LeftistTree(final T value); public Node getRoot(); //calls node1.value.compareTo(node2.value) private int compareElements(final Node node1, final Node node2); private Node<T> merge(Node node1, Node node2); public void insert(final T value); public T extractMin(); public int compareTo(final Object param); }

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  • How to fill a two Dimensional ArrayList in java with Integers?

    - by eNetik
    I have to create a 2d array with unknown size. So I have decided to go with a 2d ArrayList the problem is I'm not sure how to initialize such an array or store information. Say I have the following data 0 connects 1 2 connects 3 4 connects 5 ....etc up to a vast amount of random connections and I want to insert true(1) into [0][1], true(1) into [2][3], true(1) into [4][5]. Can the array automatically update the column/rows for me Any help is appreciated thanks

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  • Create attribute in existing XML

    - by user560411
    Hello. I have the following php code that inserts data into XML and works correctly. However, I want to add an ID number like below <CD id="xxxx"> My question is how can i add an ID into CD for this to work ? I use form to parse the id. ** the main code ** <?php $CD = array( 'TITLE' => $_POST['title'], 'BAND' => $_POST['band'], 'YEAR' => $_POST['year'], ); $doc = new DOMDocument(); $doc->load( 'insert.xml' ); $doc->formatOutput = true; $r = $doc->getElementsByTagName("CATEGORIES")->item(0); $b = $doc->createElement("CD"); $TITLE = $doc->createElement("TITLE"); $TITLE->appendChild( $doc->createTextNode( $CD["TITLE"] ) ); $b->appendChild( $TITLE ); $BAND = $doc->createElement("BAND"); $BAND->appendChild( $doc->createTextNode( $CD["BAND"] ) ); $b->appendChild( $BAND ); $YEAR = $doc->createElement("YEAR"); $YEAR->appendChild( $doc->createTextNode( $CD["YEAR"] ) ); $b->appendChild( $YEAR ); $r->appendChild( $b ); $doc->save("insert.xml"); ?> the XML file <?xml version="1.0" encoding="utf-8"?> <MY_CD> <CATEGORIES> <CD> <TITLE>NEVER MIND THE BOLLOCKS</TITLE> <BAND>SEX PISTOLS</BAND> <YEAR>1977</YEAR> </CD> <CD> <TITLE>NEVERMIND</TITLE> <BAND>NIRVANA</BAND> <YEAR>1991</YEAR> </CD> </CATEGORIES> </MY_CD>

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  • How can I display HTML code on an HTML page?

    - by Azzyh
    Example of what I want to have on my page: To make an title to your website insert <title> and end with </title>. If you want to use a div box then type <div> and end with </div> .. As you can see, I don't want it to interpret the html, but display it.

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  • Asterisk with new functions

    - by MhdAboAhmad
    hi all , please need help for an asterisk I created a write func odbc list records files in sql table: [R] dsn=connector write=INSERT INTO ast_records (filename,caller,callee,dtime) VALUES ('${ARG1}','${ARG2}','${ARG3}','${ARG4}') prefix=M and set it in dialplan : exten = _0X.,n,Set( M_R(${MIXMONITOR_FILENAME}\,${CUSER}\,${EXTEN}\,${DTIME})= ) when I excute it I get an error : ast_func_write: M_R Function not registered:

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  • Does rails do a rollback if I use begin...rescue?

    - by codeman73
    I'd like to add a begin...rescue block to one of my controllers create method, in order to log better info and construct the correct error message to return to the client. Does the rescue in any way 'interrupt' the rollback process? I'm assuming rails automatically does a rollback. When does it happen? Has it already happened by the time I get in the rescue clause? I'm using mySQL on Dreamhost and I think they use innoDB.

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  • SQL-wrappers (activerecord) to recommened for python?

    - by Horace Ho
    is there an activerecord (any similar SQL-wrapper) for python? which is good for: used in a server-side python script light-weight supports MySQL what I need to do: insert (filename, file size, file md5, the file itself) into (string, int, string, BLOB) columns if the same file (checksum + filename) does not exist in db thx

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  • Dynamic picture that displays the visitors IP address?

    - by Rob
    I see this a lot now, jpg files displaying your IP address. To you of course, not to others, they would see their own For example: How is this even possible? If this is possible, would it be possible to log an IP into a MySQL database from the picture as well? Is my IP getting logged when I view this?

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  • Little (Employee - Shift) SQL Database help

    - by latinunit-net
    Hi Guys, Im creating a little database that has employee, emp_shift, shift, tables now im suppose to be able to calculate at the end of the month which employee has done the most number of shifts. Ive created the SQL creation, insert statements for the tables, and a little diagram to explain what im trying to acomplish, im a beginner and this is a homework ive been trying to do for the last 4 days. Diagram: http://latinunit.net/emp_shift.jpg SQL: latinunit.net/emp_shift.txt can you please guys check it, deadline is 2 days and this is just a part of the whole database

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  • codeigniter - pass all form values to model

    - by Patrick
    I have a registration form that collects several parameters. i need to pass all these AND a confirmation code (generated by the controller) to the model for inserting in the DB. How can I do that? is there a way to pass the whole post to the model, eg like $this->model->insert($this->input->form(), $confirmation_code)?

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  • DHTMLX calendar enable / disable in whole website

    - by user229538
    Hello everyone, I am working on website (built using PHP, Mysql, Jquery) which require that admin set a variable in configuration and according to that configuration variable Jquery autocomplete is enabled or disabled to all website. Is there any way to achieve that functionality. Please help me, its very urgent........

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