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  • creating a table based on fields from three different tables

    - by ozlem
    Hi, I am using MS-Access 2003. I have three tables containing values of w,Q and L. In the Q table I have three fields: country_name, ISIC_code, and Q value. In the L table, there are three fields, country_name, ISIC_code, and L value. And in the w table there are two fields; country_name and w value. Country_names, and ISIC_code might be different for each table. What I want to do is create a new table with the values b(j)=w(i)L(ij)/Q(ij), where i is the country and j is the ISIC_code. So first I will check if the country name and ISIC_code are the same in L and Q tables. If they are equal I will calculate L/Q and then multiply this with w value of the same country if it exists. I appreciate any help.

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  • [SQL] Getting the sum of several columns from two tables

    - by romaintaz
    I want to get the sum of several columns from 2 different tables (these tables share the same structure). If I only consider one table, I would write this kind of query: SELECT MONTH_REF, SUM(amount1), SUM(amount2) FROM T_FOO WHERE seller = XXX GROUP BY MONTH_REF; However, I would like to also work with the data from the table T_BAR, and then have a select query that return the following columns: MONTH_REF SUM(T_FOO.amount1) + SUM(T_BAR.amount1) SUM(T_FOO.amount2) + SUM(T_BAR.amount2) everything grouped by the value of MONTH_REF. Note that a record for a given MONTH_REF can be found in one table but not in the other table. In this case, I would like to get the sum of T_FOO.amount1 + 0 (or 0 + T_BAR.amount1). How can I write my SQL query to get this information? For information, my database is Oracle 10g.

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  • Extract Bullets and Tables information in Word doc from c#

    - by Siva
    Hi All, I need to create an word document based on the template in c#. I have tags for only the paragraphs. Is there any way to replace the bullets and tables that are already available in the template based on the user input. I was able to replace the paragraph with input text using the Replace command in the Word InterOp. Need help to do the rest of the items. Replace the bullets based on the user input Fill the tables with the input values Code for replacing the Paragraph based on the tag: FindAndReplace(wordApplication, "/date/", DateTime.Now.Date.ToString("MMM dd, yyyy")); FindAndReplace(){ wordApplication.Selection.Find.Execute(ref findText, ref matchCase, ref matchWholeWord, ref matchWildCards, ref matchSoundsLike, ref matchAllWordsForms, ref forward, ref wrap, ref format, ref replaceWithText, ref replace, ref matchKashida, ref matchDiacritics, ref matchAlefHamsa, ref matchControl); } Thanks in Advance. ASAP

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  • HELP with sql query involving two tables and a max date

    - by wes
    hello all....firstly any help is greatly appreciated! i have been searching for a solution to my problem for a while and haven't found exactly what i am looking for. i have two tables notifications and mailmessages. notifications has fields( notifytime, notifynumber, and accountnumber). mailmessages has fields(id, messagesubject, messagenumber, accountnumber) my goal is to create a single sql query to retrieve distinct rows from mailmessages WHERE the accountnumber is a specific number AND the notifynumber=messagenumber AND ONLY the most recent notifytime from the notifications table where the accountnumbers match in both tables. i am using sqlexpress2008 as a backend to an asp.net page....this query should return distinct messages for an account with only the most recent date from the notifications table..please help! i'll buy you a beer!!!

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  • fetch some data from two tables

    - by user1753971
    i have site like imdb and we provide movie information sin site..and our website have option to rate all movies for every users. I have two tables 1 . imdb (its for store movie details) id,name,actors,vote 2. ratings (its for store users rating details) id,rating_id(its same as id from first table),rating_num,IP now what am doing is..when anyone rating a movie take the avg of that movie rating by using rating tables (total ratings/number of ratings) and insert that value into "vote" column in first table..my demands this..thats why done like this.. Now my problem is..i want to fetch top rated movies..i mean in vote column which movie have top rating which want to list and one more condition is that that movie should rated by 10 users(use ratings table for that) thanks in advance

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  • need to find differences between 2 identical sql tables

    - by balalakshmi
    I need to find differences between 2 identical sql tables Each table is being uploaded from a 3rd paty tool into sqlserver database. The table structure is: Issue ID-status-Who Issue ID will not repeated within a table, though its not defined explicitly as primary Key There could be additions/deletions/Updations between any 2 tables. What I need Number of rows added & their details Number of rows deleted & their details Number of rows deleted & their details How do I do this 1) is it better to use sql 2) or use datatables

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  • One-to-many relationship related to many tables

    - by Andrey
    I have a scenario where: there are two (or more) tables that represent independent items. lets say Users and Companies Both of these tables need addresses stored. Each one can have one or more address In a normal 1 to many scenario Addresses table woudl just have a UserId or a CompanyId creating a normal 1 to many relationship. In this case i have a few approaches i can think of the Addresses table could have both a UserId and a CompanyId and only one would be used for each record. 2 keys could be used ObjectId and ObjectType So Object id would have a UserId or a CompanyId, and ObjectType woudl be User or Company Create an ObjectTable and add ObjectId to Users and Companies. Addresses would then have an OjbectId I do not really like any of these solutions. i am wondering what is the best approach here. On another note i will most likely user linqtosql for my data access layer.

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  • how to populate the tables within xmlDataDocument.DataSet

    - by alex
    Hi all: I am working on a C# application that involves using XML schema file as databases for message definitions and XML file as databases for message data. I was following the example I found:http://msdn.microsoft.com/en-us/library/system.xml.xmldatadocument.dataset%28v=VS.100%29.aspx I wrote my own xsd and XML file. I used the same approach in the example, read the xsd file and then load the xml file. But I don't have any "Rows" created for my DataTable. I used debugger to step through my codes. When I am get my DataTable use xmlDataDocument.DataSet.Tables["name of the table"], the Rows property of that tables is 0. Does anybody know what might cause the DataSet tables not get populated after I loaded the xmlDataDocument with XML file? Here is a fragment of XSD file: <?xml version="1.0" encoding="utf-8"?> <xs:schema id="test" targetNamespace="http://tempuri.org/test.xsd" elementFormDefault="qualified" xmlns="http://tempuri.org/test.xsd" xmlns:mstns="http://tempuri.org/test.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" > <xs:element name="reboot_msg"> <xs:complexType> <xs:complexContent> <xs:extension base="header_s"> <xs:sequence> <xs:element name="que_name"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:minLength value="4"/> <xs:maxLength value="8"/> </xs:restriction> </xs:simpleType> </xs:element> <xs:element name="priority" type="xs:unsignedShort"/> </xs:sequence> </xs:extension> </xs:complexContent> </xs:complexType> </xs:element> and here is a fragment of the XML file: <?xml version="1.0" standalone="yes"?> <test xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" > <reboot_msg> <message_length>16</message_length> <message_type>7</message_type> <message_sequence>0</message_sequence> <que_name>NONE</que_name> <priority>5</priority> </reboot_msg> It could be the XML and XSD file I created missed something. Please help. Thanks

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  • MySQL Full-text Search Workaround for innoDB tables

    - by Rob
    I'm designing an internal web application that uses MySQL as its backend database. The integrity of the data is crucial, so I am using the innoDB engine for its foreign key constraint features. I want to do a full-text search of one type of records, and that is not supported natively with innoDB tables. I'm not willing to move to MyISAM tables due to their lack of foreign key support and due to the fact that their locking is per table, not per row. Would it be bad practice to create a mirrored table of the records I need to search using the MyISAM engine and use that for the full-text search? This way I'm just searching a copy of the data and if anything happens to that data it's not as big of a deal because it can always be re-created. Or is this an awkward way of doing this that should be avoided? Thanks.

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  • select from multiple tables with different columns

    - by Qaiser Iftikhar
    Say I got this sql schema. Table Job: id,title, type, is_enabled Table JobFileCopy: job_id,from_path,to_path Table JobFileDelete: job_id, file_path Table JobStartProcess: job_id, file_path, arguments, working_directory There are many other tables with varying number of columns and they all got foreign key job_id which is linked to id in table Job. My questions: Is this the right approach? I don't have requirement to delete anything at anytime. I will require to select and insert mostly. Secondly, what is the best approach to get the list of jobs with relevant details from all the different tables in a single database hit? e.g I would like to select top 20 jobs with details, their details can be in any table (depends on column type in table Job) which I don't know until runtime. Thanks in advance. Regards,

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  • Dynamic access to tables from another database inside an user function

    - by Alberto Martinez
    I have an user defined table function in SQL Server that aggregate data from several tables including a couple of tables of another database. That is done hardcoding the name of the database in the queries, but we want to make the database name configurable (because our databases usually share the server with the databases of other applications). I tried to construct a dynamic query string inside the function using the database name that is stored in a configuration table, but: When I tried exec(@sqlStatement) SQL Server said that execute string is not allowed inside a function. Then I tried exec sp_executesql @sqlStatement and the function was created, but when you execute it SQL Server says that inside a function you can only run extended functions and procedures. So the question is: is possible create a function or stored procedure that access a table in another database without having to recreate the function when the database name is different? TIA.

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  • How can an SQL query return data from multiple tables

    - by Fluffeh
    I would like to know how to get data from multiple tables in my database, what types of methods are there to do this, what are joins and unions and how are they different from one another? When should I use each one compared to the others? I am planning to use this in my (for example - PHP) application, but don't want to run multiple queries against the database, what options do I have to get data from multiple tables in a single query? Note: I am writing this as I would like to be able to link to a well written guide on the numerous questions that I constantly come across in the PHP queue, so I can link to this for further detail when I post an answer. The answers cover off the following: Part 1 - Joins and Unions Part 2 - Subqueries Part 3 - Tricks and Efficient Code

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  • Inserting Record into multiple tables No Common ID

    - by the_
    OK so I have two tables, MEDIA and BUSINESS. I want it set up so the forms to input into them are on the same page. MEDIA has a row that is biz_id that is the id of BUSINESS. So MEDIA is really a part of BUSINESS. HOW do I insert/add these into their tables without a common ID because I haven't yet made the record for business? I'm sorry I didn't really word this very much... You might need more clarification to answer properly and I'll be glad to give any more info. Any help would be greatly appreciated, thanks!

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  • Can hash tables really be O(1)

    - by drawnonward
    It seems to be common knowledge that hash tables can achieve O(1) but that has never made sense to me. Can someone please explain it? A. The value is an int smaller than the size of the hash table, so the value is its own hash, so there is no hash table but if there was it would be O(1) and still be inefficient. B. You have to calculate the hash, so the order is O(n) for the size of the data being looked up. The lookup might be O(1) after you do O(n) work, but that still comes out to O(n) in my eyes. And unless you have a perfect hash or a large hash table there are probably several items per bucket so it devolves into a small linear search at some point anyway. I think hash tables are awesome, but I do not get the O(1) designation unless it is just supposed to be theoretical.

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  • reterview data from two tables using inner join in cakephp

    - by user3593884
    I two tables from database one as user(id,first_name,last_name) and the second table location(id,country). I need to perform inner join with this two tables and the list should display first_name,last_name,country with condition user.id=location.id I have written sql queries in cakephp $this->set('users',$this->User->find('list', array( 'fields' => array('User.id', 'User.first_name','location.country'), array('joins' => array(array('table' => 'location', 'alias' => 'location', 'type' => 'INNER', 'conditions' => array('User.id = location.id'))))))); i get error -Unknown column 'location.country' in 'field list' Please help!

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  • Some websites to learn about MySQL tables and creating databases (The Do's and Don'ts)

    - by redsoxmaniac
    I am venturing on making a website with a database for baseball games for an intramural league. I have made databases before, but this project seems to have many fields that will require at least 3 tables. I want to make the tables correct, so that I can sort and gather information from multiple fields properly ( such as the team table querying total goals scored ). Is there a website where there is a MySQL tutorial on do's and don'ts for making somewhat complex databases? Not intro tutorials, but more around where you get into combining multiple pieces of information correctly. Any source would be helpful, thanks!

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  • Some tables mixed together

    - by DJPython
    Hello. I have 2 different tables in my database. They have some variables common and some different. For example: Table1: ID Date Name Address Fax Table2: ID Date Name e-mail Telephone number I want to display data together sorted by date & ID but from both tables. For example, first displayed will be the newest record from first table, but the second one will be the record from another table posted right after first one. Hope everybody understand, sorry for my English. Cheers.

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  • R statistics, change ranked tables to paired

    - by cousin_pete
    I have data for many tables like: event_id player finish 1 a 1 1 b 2 1 c 3 1 d 4 2 b 1 2 e 2 2 f 3 2 a 3 2 g 5 Many event_id's, each from 5 to 20 players, finish may be tied. In order to use conditional logistic regression in R I would like to reformat the tables to be like: event_id player1 player2 result 1 a b 1 1 a c 1 1 a d 1 1 b c 1 1 b d 1 1 c d 1 2 b e 1 2 b f 1 2 b a 1 2 b g 1 2 e f 1 2 e a 1 2 e g 1 2 f a 0.5 2 f g 1 2 a g 1 An event_id of 4 players will have 4*3/2 = 6 records in the new table, 5 players will have 5*4/2 = 10 records and so on. If player "a" has "finish" less than player "b" the "result" is 1. If "finish" is equal the "result" is 0.5. If player "a" has finish greater than player "b" then the "result" would be 0. Any help appreciated!

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  • Testing for Active Directory Schema modification (not upgrade)

    - by Darktux
    I am trying to test a schema modification. That is i need to add one of the attributes to global catalog by modifying schema , initially in a lab which is exact replica.My questions are below; - What tests need to be done post schema change to determine if its safe for production? - Apart from measuring changes in DIT size post change, is there a way to find the whole size increase for adding an attribute to GC pre change? please let me know if any extra questions or info required.

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  • Testing performance from around the world - how do I get a linux shell easily in multiple countries?

    - by Matthew O'Riordan
    We are building a socket based service where latency is paramount, and as such we have servers distributed into 7 data centres around the world. However, whilst we know we're bringing the servers closer to the clients, it's very difficult to know how effective this is, and importantly, what difference this makes compared to our competitors. As such, we want to run simple scripts that test latency and throughput for both our service and our competitors, which is easy enough using Amazon, however Amazon only have 7 data centres. We would like to know for example how we perform in locations all over the world such as South Africa, Australia, China, Peru etc. Does anyone know of any service where we could piggy back off their global infrastructure and run some scripts to test this performance? The obvious contenders are people like Monitis, but I don't think they would allow us to run custom scripts, only standard protocol monitors. Thanks for your help. Matt

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