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• C# - Google like query engine.-

  - by MRFerocius

  Guys; Hope you are fine. I have to make a Web Project (very simple) I will have a DB with 2 tables. One table has 2 fields. From the WebPage I need a Google like search query, for example I have Movie Title and Movie Review on the Table. I need to be able to search those 2 fields like this: "Best Movie" + Action I will need to make a query to the DB to search for the "Best Movie" string togheter plus optional ACTION word on 2 fields of the table. Am I clear??? :) Does somebody know if this has already been made, and if it´s public and free and where to get it :) Thanks in advanced EDIT: My concern is to translate the Google like Symbols ("", +, -, ~) to build a valid query.

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• Storing n-grams in database in < n number of tables.

  - by kurige

  If I was writing a piece of software that attempted to predict what word a user was going to type next using the two previous words the user had typed, I would create two tables. Like so: == 1-gram table == Token | NextWord | Frequency ------+----------+----------- "I" | "like" | 15 "I" | "hate" | 20 == 2-gram table == Token | NextWord | Frequency ---------+------------+----------- "I like" | "apples" | 8 "I like" | "tomatoes" | 12 "I hate" | "tomatoes" | 20 "I hate" | "apples" | 2 Following this example implimentation the user types "I" and the software, using the above database, predicts that the next word the user is going to type is "hate". If the user does type "hate" then the software will then predict that the next word the user is going to type is "tomatoes". However, this implimentation would require a table for each additional n-gram that I choose to take into account. If I decided that I wanted to take the 5 or 6 preceding words into account when predicting the next word, then I would need 5-6 tables, and an exponentially increase in space per n-gram. What would be the best way to represent this in only one or two tables, that has no upper-limit on the number of n-grams I can support?

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• iPhone - finding items in current entity that share related item

  - by Pedro

  G'day Folks My core data driven app has an Events entity, essentially a list of times & venues, with a related Acts entity, the names & bios of the acts appearing at those events. I have a table view that shows the event time & venue (as a table section with 1 row), the act name & act bio that works nicely. If that act is appearing at more than one event I'd like to include another table section that lists those events. I think could get that with event.act.events except that it would include the event I'm currently displaying. Can anyone suggest how to get the data I want & exclude the current record? Cheers & TIA, Pedro :) PS... I have not quite 18 hours until the promised time for a prototype of my app to be available for some testers to download.

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• Doctrine enum type by value

  - by MitMaro

  I have a column in a table defined as following in my yaml file: myTable: columns: value: type: enum length: 2 values: ['yes', 'no'] In the code I am trying to insert data into this table but I can't figure out a way to insert the data using the enum text value (ie. 'yes' or 'no'). What I was trying was is something like this: $obj = new myTable(); // the model for this table $obj->value = 'yes'; // if I use the numerical value for this it works I am using Doctrine 1.1.0.

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• How to Display result of subquery rows as one column in MySQL?

  - by SIA

  Hi I have three tables Category, Movies and RelCatMov Category-table categoryid, categoryName 1 thriller 2 supsense 3 romantic 4 action 5 sci-fi Movies-table movieid, movieName 1 Avataar 2 Titanic 3 NinjaAssassin RelCatMov-table categoryid, MovieID 1 1 2 2 3 2 4 2 5 2 Now i Want to display a the record as MovieName Categories Titanic Suspense,Romantic,Sci-fi,action How to do this. I am writing a query select MovieName,(select categoryname from category b,relcatmov c where b.categoryid=c.categoryid and c.movieid=a.movieid) as categories from movies a; Error: Subquery returns more than one row!!! How to display the result of rows in one column? Please help!!!

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• Zend Dd Rowset getting parent row

  - by simple

  I am wondering about using the abstraction in Zend Db RowSet instead of joins, is it possible for instance I am able to get some info from parent table as in here /** * Get default photo info (path , description) */ public function getDefaultPhotoInfo($userdId){ $select = $this->select($this) ->where('id=?', $userdId); $rowset = $this->fetchAll($select); $current = $rowset->current(); $res = $current->findParentRow('UserPhotos', 'Avatar'); if(isset($res)){ return $res->toArray(); } } How can I use Rowset abstraction to get this logic working table( id, pic_path,) table_translation(id, table_id, lang_id, pic_title); the above is representation of two tables , the idea is to get the info from both table specifying the lang_id , it is easy with joins but can I do it with the abstraction of Db Rowset ?

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• SQL Server Agent 2005 job runs but no output

  - by alimack

  Essentially I have a job which runs in BIDS and as as a stand lone package and while it runs under the SQL Server Agent it doesn't complete properly (no error messages though). The job steps are: 1) Delete all rows from table; 2) Use For each loop to fill up table from Excel spreasheets; 3) Clean up table. I've tried this [MS page][1] (steps 1 & 2), didn't see any need to start changing from Server side security. Also SQLServerCentral.com for [this page][2], no resolution. How can I get error logging or a fix? Note I've reposted this from Server Fault as it's one of those questions that's not pure admin or programming. I have logged in as the proxy account I'm running this under, and the job runs stand alone but complains that the Excel tables are empty?

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• virtual column for drop down in the ruby on rails.

  - by pramod

  How to place a drop down for the virtual column, in the ruby on rails. The virutal column does not exist in my table , but I want to get the value from the drop down ,when user saves the data. for example, product_price is a virtual column , which doesn't exist in my database table. But I would like to have a dropdown, with product price to be displayed from another table. And when user selects the product_price, the selected product_price should be gettable in an object as self.product_price. Virtual column for labels is working fine, but for drop down its not working for me..any info woud be Thankful...

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• MySQL calling in Username to show instead of ID!

  - by Jess

  I have a users table, books table and authors table. An author can have many books, while a user can also have many books. (This is how my DB is currently setup). As I'm pretty new to So far my setup is like bookview.php?book_id=23 from accessing authors page, then seeing all books for the author. The single book's details are all displayed on this new page...I can get the output to display the user ID associated with the book, but not the user name, and this also applies for the author's name, I can the author ID to display, but not the name, so somewhere in the query below I am not calling in the correct values: SELECT users.user_id, authors.author_id, books.book_id, books.bookname, books.bookprice, books.bookplot FROM books INNER JOIN authors on books.book_id = authors.book_id INNER JOIN users ON books.book_id = users.user_id WHERE books.book_id=" . $book_id; Could someone help me correct this so I can display the author name and user name both associated with the book! Thanks for the help :)

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• Speeding up jQuery empty() or replaceWith() Functions When Dealing with Large DOM Elements

  - by Levi Hackwith

  Let me start off by apologizing for not giving a code snippet. The project I'm working on is proprietary and I'm afraid I can't show exactly what I'm working on. However, I'll do my best to be descriptive. Here's a breakdown of what goes on in my application: User clicks a button Server retrieves a list of images in the form of a data-table Each row in the table contains 8 data-cells that in turn each contain one hyperlink Each request by the user can contain up to 50 rows (I can change this number if need be) That means the table contains upwards of 800 individual DOM elements My analysis shows that jQuery("#dataTable").empty() and jQuery("#dataTable).replaceWith(tableCloneObject) take up 97% of my overall processing time and take on average 4 - 6 seconds to complete. I'm looking for a way to speed up either of the above mentioned jQuery functions when dealing with massive DOM elements that need to be removed / replaced. I hope my explanation helps.

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• Plural to Singular conversion trouble in Rails Migrations?

  - by Earlz

  Hi, I'm a beginner at Ruby On Rails and am trying to get a migration to work with the name Priorities So, here is the code I use in my migration: class Priorities < ActiveRecord::Migration def self.up create_table :priorities do |t| t.column :name, :string, :null => false, :limit => 32 end Priority.create :name => "Critical" Priority.create :name => "Major" Priority.create :name => "Minor" end def self.down drop_table :priorities end end This results in the following error though: NOTICE: CREATE TABLE will create implicit sequence "priorities_id_seq" for serial column "priorities.id" NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "priorities_pkey" for table "priorities" rake aborted! An error has occurred, this and all later migrations canceled: uninitialized constant Priorities::Priority Is this some problem with turning ies to y for converting something plural to singular?

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• Determining threshold for lock escalation

  - by Davin

  I have a table with around 2.5 millions records and will be updating around 700k of them and want to update these while still allowing other users to see the data. My update statement looks something like this: UPDATE A WITH (UPDLOCK,ROWLOCK) SET A.field = B.field FROM Table_1 A INNER JOIN Table2 B ON A.id = B.id WHERE A.field IS NULL AND B.field IS NOT NULL I was wondering if there was any way to work out at what point sql server will escalate a lock placed on an update statement (as I don't want the whole table to be locked)? I don't have permissions to run a server trace to see how the locks are being applied, so is there any other way of knowing at what point the lock will be escalated to cover the whole table? Thanks!

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• MySQL locking problem

  - by teehoo

  I have a simple setup of a set of writers and a set of readers working with a MySQL ISAM table. The writers are only inserting rows while the readers are only checking for new rows. OK, so I know that I don't need a lock in this situation, since I'm not modifying existing rows. However my Writers are accessing one more table that does need a lock. I piece of information seems irrelevant except for the following limitation stated in the MySQL documentation: A session that requires locks must acquire all the locks that it needs in a single LOCK TABLES statement. While the locks thus obtained are held, the session can access only the locked tables. For example, in the following sequence of statements, an error occurs for the attempt to access t2 because it was not locked in the LOCK TABLES statement: So to access the table I want to insert rows into, I NEED to lock it, which is causing me performance problems. Any suggestions of how to get around this?

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• Querying Two Tables At Once

  - by John

  Hello, I am trying to do what I believe is called a join query. First, in a MySQL table called "login," I want to look up what "loginid" is in the record where "username" equals $profile. (This will be just one record / row in the MySQL table). Then, I want to take that "loginid" and look up all rows / records in a different MySQL table called "submission," and pull data that have that "loginid." This could possibly be more than one record / row. How do I do this? The code below doesn't seem to work. Thanks in advance, John $profile = mysql_real_escape_string($_GET['profile']); $sqlStr = "SELECT l.username, l.loginid, s.loginid, s.submissionid, s.title, s.url, s.datesubmitted, s.displayurl FROM submission AS s, login AS l WHERE l.username = '$profile', s.loginid = l.loginid ORDER BY s.datesubmitted DESC";

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• Loading tables dynamically with NHibernate

  - by Trevor Goertzen

  I'm working on a project that requires me to load tables based on table names stored in another table. More tables will be added to the DB (and by someone else), so creating NHibernate mapping files for each table isn't an option. Does anyone know if it is possible to load tables dynamically using NHibernate? Edit: I should add that I'm on .NET 2.0, so I can't use Fluent NHibernate. Thanks for the suggestion though guys. I will use that as evidence in convincing my associates to upgrade.

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• Concatenating databases with Squeryl

  - by Pengin

  I'm trying to use Squeryl to take the contents of a table from one database, and append it to the equivalent table in another database. The primary key will have to be reassigned in the process, but I'm getting the error NULL not allowed for column "SIMID". Why is this? object Concatenator { def main(args: Array[String]) { Class.forName("org.h2.Driver"); val seshA = Session.create( java.sql.DriverManager.getConnection("jdbc:h2:file:data/resultsA", "sa", "password"), new H2Adapter ) val seshB = Session.create( java.sql.DriverManager.getConnection("jdbc:h2:file:data/resultsB", "sa", "password"), new H2Adapter ) using(seshA){ import Library._ from(sims){s => select(s)}.foreach{item => using(seshB){ sims.insert(item); } } } } case class Simulation( @Column("SIMID") var id: Long, val date: Date ) extends KeyedEntity[Long] object Library extends Schema { val sims = table[Simulation] on(sims)(s => declare( s.id is(unique, indexed, autoIncremented) )) } }

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• Any good GUI tool to easily create stored procs SQL server 2008 ?

  - by Munish Goyal

  The templates for stored-procs in SSMS do not auto-populate all input columns, again there is manual work involved. I am looking for something like right-click on table and say CREATE stored-proc, and then it allows to pick a template, based on which it can populate the parameters etc. and give check-box in GUI (like table designer, you can easily add/remove a column). Some support for change management with table undergoing alter or otherwise would also be helpful. Currently we manually write all stored-procs, which i think we should be able to save time and labor with automation. Any suggestion on other free 3rd party tools ?

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• how to invoke function writen in a validation.php and stroe all function name in database.

  - by saint

  Respected all, i'm in trouble. I created a file with name validation.php and store all my validation functionality in this file with different function names like, check_textbox(parm1, pram2, pram3, pram4) { // Definition here } check_chkBox(parm1, pram2) { // Definition here } and so on.....! then i created a table in mysql with the name tbValidation and stored all the function name with parameters in a table. the record stored in table look like as: interfaceid---------- functionNameWithReturnValue 1 ------------ check_textbox(parm1, pram2, pram3, pram4) = 1 2 ------------ check_textbox(parm1, pram2, pram4) = 0 3 ------------ check_textbox(parm1, pram2, pram4) = 1) AND (check_chkBox(parm1, pram2)=0) when i fetch record from database i want to invoke those functions that store in validation.php $data = mysql_fetch_array($drow); if($db->row_count > 0) { // when i fetch row one from database. I used this one but not working // @ $data[0] have value "check_textbox(parm1, pram2, pram3, pram4) = 1" if($data[0]) { // Do this } } How i can do this task...? :(

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• Help creating a ColumnName Convention using FluentNHibernate

  - by Rafael E. Belliard

  I've been trying to specify a custom naming convention for my database table columns. So far, I have been able to setup a convention for the table's name, but not the actual columns. I've seen a few guides on the internet, but they're not working using the latest Fluent NHibernate (1.0.0 RTM). public class CamelCaseSplitNamingConvention : IClassConvention, IComponentConvention { public void Apply(IClassInstance instance) { instance.Table(instance.EntityType.Name.ChangeCamelCaseToUnderscore()); } public void Apply(IComponentInstance instance) { // is this the correct call for columns? If not, which one? } } Please help.

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• How to optimize this user ranking query

  - by James Simpson

  I have 2 databases (users, userRankings) for a system that needs to have rankings updated every 10 minutes. I use the following code to update these rankings which works fairly well, but there is still a full table scan involved which slows things down with a few hundred thousand users. mysql_query("TRUNCATE TABLE userRankings"); mysql_query("INSERT INTO userRankings (userid) SELECT id FROM users ORDER BY score DESC"); mysql_query("UPDATE users a, userRankings b SET a.rank = b.rank WHERE a.id = b.userid"); In the userRankings table, rank is the primary key and userid is an index. Both tables are MyISAM (I've wondered if it might be beneficial to make userRankings InnoDB).

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• Comparing two collection lists

  - by Eric

  I've been at this for few hors now and can't seem to find a solution. I have 2 invnetory lists, one a spreadsheet and the other data table. I need to match the spreadsheet agains the data table to find out if I have missing inventory. The spreadsheet should match with what I have in the db, ie the spreadsheet is like a master so when I have missing inventory in DB I need to add it an list and build a report. I thought by looping throught the spreadsheet and for each inventory in the spreadsheet loop through the data table I can achieve my goal but that proved to be wrong. Any ideas how I would do this? Thanks, Eric

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• Custom Filter on Dynamic Data Website

  - by Gerardo Gala

  Hi All! I want to able to search on a column that is a foreign key to another table. I don't want to type in the ID (which is the foreign key). I want to search by name. For example, you have a Product Table and a Manufacturer Table. On the Products gridview, I want to be able to search the Manufacturer Name - not Manufacturer Id. But the Products gridview has ProductID. Thanks!

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• Why does MySQL autoincrement increase on failed inserts?

  - by Sorcy

  A co-worker just made me aware of a very strange MySQL behavior. Assuming you have a table with an auto_increment field and another field that is set to unique (e.g. a username-field). When trying to insert a row with a username thats already in the table the insert fails, as expected. Yet the auto_increment value is increased as can be seen when you insert a valid new entry after several failed attempts. For example, when our last entry looks like this... ID: 10 Username: myname ...and we try five new entries with the same username value on our next insert we will have created a new row like so: ID: 16 Username: mynewname While this is not a big problem in itself it seems like a very silly attack vector to kill a table by flooding it with failed insert requests, as the MySQL Reference Manual states: "The behavior of the auto-increment mechanism is not defined if [...] the value becomes bigger than the maximum integer that can be stored in the specified integer type." Is this expected behavior?

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• PL/SQL bulk collect into associative array with sparse key

  - by Dan

  I want to execute a SQL query inside PL/SQL and populate the results into an associative array, where one of the columns in the SQL becomes the key in the associative array. For example, say I have a table Person with columns PERSON_ID INTEGER PRIMARY KEY PERSON_NAME VARCHAR2(50) ...and values like: PERSON_ID | PERSON_NAME ------------------------ 6 | Alice 15 | Bob 1234 | Carol I want to bulk collect this table into a TABLE OF VARCHAR2(50) INDEX BY INTEGER such that the key 6 in this associative array has the value Alice and so on. Can this be done in PL/SQL? If so, how?

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• can oracle types be updated like tables?

  - by Omnipresent

  I am converting GTT's to oracle types as explained in an excellent answer by APC. however, some GTT's are being updated based on a select query from another table. For example: UPDATE my_gtt_1 c SET (street, city, STATE, zip) = (SELECT src.unit_address, src.unit_city, src.unit_state, src.unit_zip_code FROM (SELECT mbr.ROWID row_id, unit_address, RTRIM(a.unit_city) unit_city, RTRIM(a.unit_state) unit_state, RTRIM(a.unit_zip_code) unit_zip_code FROM table_1 b, table_2 a, my_gtt_1 mbr WHERE type = 'ABC' AND id = b.ssn_head AND a.h_id = b.h_id AND row_id >= v_start_row AND row_id <= v_end_row) src WHERE c.ROWID = src.row_id) WHERE state IS NULL OR state = ' '; if my_gtt_1 was not a global temporary table but an oracle collection type then is it possible to do updates this complex? Or in these cases we are better off using the global temporary table?

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