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  • cross tab query

    - by reggie
    Hi guys, I have a project table with the following columns ProjectID, ProjectDescription and a list data table which has the following columns ProjectID ListType Date Memo Every project has many list type entries in the ListType Table. What I want to do is run a query which will return something like this ProjectID, ProjectDescription, ListType1, ListType1.date, Listtype1.Memo, ListType2, ListType2.date, ListType.Memo Againg, Every Project is coonected to a number of list type data. I am using Microsoft SQL 2000. so the Pivot keyword doesnot work

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  • Dynamic JPA 2.0 query using Criteria API

    - by rrrrrrrrrrrrr
    Hello all, I am a bit stucked constructing a dynamic query using the CriteriaBuilder of JPA 2.0. I have quite a common use case I guess: User supplies a arbitrary amount of search parameters X to be and / or concatenated: like : select e from Foo where (name = X1 or name = X2 .. or name = Xn ) The Method or of CriteriaBuilder is not dynamic: Predicate or(Predicate... restrictions) Ideas? Samples?

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  • SQL Query for inserting multi column values in to single column

    - by SARAVAN
    I have Table "MultiCol" as below Name LibraryID RegisterID EngineerID Rahul 1002 4521 4854 Ajay 5072 3151 4833 Vimal 4532 4531 4354 I want to insert the Rahul's all IDs in the "SingleCol" table(shown below) which is having only one Column named "IDS" So I want the Result as shown below Table "SingleCol" IDS 1002 4521 4854 Which query pattern will be most efficient in terms of time and space?

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  • How to optimize Core Data query for full text search

    - by dk
    Can I optimize a Core Data query when searching for matching words in a text? (This question also pertains to the wisdom of custom SQL versus Core Data on an iPhone.) I'm working on a new (iPhone) app that is a handheld reference tool for a scientific database. The main interface is a standard searchable table view and I want as-you-type response as the user types new words. Words matches must be prefixes of words in the text. The text is composed of 100,000s of words. In my prototype I coded SQL directly. I created a separate "words" table containing every word in the text fields of the main entity. I indexed words and performed searches along the lines of SELECT id, * FROM textTable JOIN (SELECT DISTINCT textTableId FROM words WHERE word BETWEEN 'foo' AND 'fooz' ) ON id=textTableId LIMIT 50 This runs very fast. Using an IN would probably work just as well, i.e. SELECT * FROM textTable WHERE id IN (SELECT textTableId FROM words WHERE word BETWEEN 'foo' AND 'fooz' ) LIMIT 50 The LIMIT is crucial and allows me to display results quickly. I notify the user that there are too many to display if the limit is reached. This is kludgy. I've spent the last several days pondering the advantages of moving to Core Data, but I worry about the lack of control in the schema, indexing, and querying for an important query. Theoretically an NSPredicate of textField MATCHES '.*\bfoo.*' would just work, but I'm sure it will be slow. This sort of text search seems so common that I wonder what is the usual attack? Would you create a words entity as I did above and use a predicate of "word BEGINSWITH 'foo'"? Will that work as fast as my prototype? Will Core Data automatically create the right indexes? I can't find any explicit means of advising the persistent store about indexes. I see some nice advantages of Core Data in my iPhone app. The faulting and other memory considerations allow for efficient database retrievals for tableview queries without setting arbitrary limits. The object graph management allows me to easily traverse entities without writing lots of SQL. Migration features will be nice in the future. On the other hand, in a limited resource environment (iPhone) I worry that an automatically generated database will be bloated with metadata, unnecessary inverse relationships, inefficient attribute datatypes, etc. Should I dive in or proceed with caution?

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  • PostgreSQL Crosstab Query

    - by schone
    Hi all, Does any one know how to create crosstab queries in PostgreSQL? For example I have the following table: Section Status Count A Active 1 A Inactive 2 B Active 4 B Inactive 5 I would like the query to return the following crosstab: Section Active Inactive A 1 2 B 4 5 Is this possible? Thanks!

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  • How to evaluate query by DBMS?

    - by Kevinniceguy
    Sorry...I mean what question will be for this query? SELECT SUM(price) FROM Room r, Hotel h WHERE r.hotelNo = h.hotelNo and hotelName = 'Paris Hilton' and roomNo NOT IN (SELECT roomNo FROM Booking b, Hotel h WHERE (dateFrom <= CURRENT_DATE AND dateTo >= CURRENT_DATE) AND b.hotelNo = h.hotelNo AND hotelName = 'Paris Hilton');

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  • what is the purpose of this mysql query ?

    - by Harbhag
    SELECT id, CONCAT(lastname,', ',firstname) AS fullname, lastname, firstname FROM " . TABLE_CONTACT . " WHERE CONCAT(firstname,' ', lastname) LIKE '%$goTo%' OR CONCAT(firstname,' ', middlename,' ', lastname) LIKE '%$goTo%' OR nickname LIKE '%$goTo%' ORDER BY fullname"; Can anyone please tell me what is purpose of above query ? I am new to mysql so unable to understand it. Thanks

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  • MongoDB Norm query nested objects

    - by Howard
    Does anyone have a sample of how to query for nested/inner objects in MongoDB using NORM (C#)? For example, if a typical document in a collection looks like Order/OrderItems, how can I look up a specific OrderItem by OrderItem.Quantity 10.

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  • Correlated SQL Join Query from multiple tables

    - by SooDesuNe
    I have two tables like the ones below. I need to find what exchangeRate was in effect at the dateOfPurchase. I've tried some correlated sub queries, but I'm having difficulty getting the correlated record to be used in the sub queries. I expect a solution will need to follow this basic outline: SELECT only the exchangeRates for the applicable countryCode From 1. SELECT the newest exchangeRate less than the dateOfPurchase Fill in the query table with all the fields from 2. and the purchasesTable. My Tables: purchasesTable: > dateOfPurchase | costOfPurchase | countryOfPurchase > 29-March-2010 | 20.00 | EUR > 29-March-2010 | 3000 | JPN > 30-March-2010 | 50.00 | EUR > 30-March-2010 | 3000 | JPN > 30-March-2010 | 2000 | JPN > 31-March-2010 | 100.00 | EUR > 31-March-2010 | 125.00 | EUR > 31-March-2010 | 2000 | JPN > 31-March-2010 | 2400 | JPN costOfPurchase is in whatever the local currency is for a given countryCode exchangeRateTable > effectiveDate | countryCode | exchangeRate > 29-March-2010 | JPN | 90 > 29-March-2010 | EUR | 1.75 > 30-March-2010 | JPN | 92 > 31-March-2010 | JPN | 91 The results of the query that I'm looking for: > dateOfPurchase | costOfPurchase | countryOfPurchase | exchangeRate > 29-March-2010 | 20.00 | EUR | 1.75 > 29-March-2010 | 3000 | JPN | 90 > 30-March-2010 | 50.00 | EUR | 1.75 > 30-March-2010 | 3000 | JPN | 92 > 30-March-2010 | 2000 | JPN | 92 > 31-March-2010 | 100.00 | EUR | 1.75 > 31-March-2010 | 125.00 | EUR | 1.75 > 31-March-2010 | 2000 | JPN | 91 > 31-March-2010 | 2400 | JPN | 91 So for example in the results, the exchange rate, in effect for EUR on 31-March was 1.75. I'm using Access, but a MySQL answer would be fine too. UPDATE: Modification to Allan's answer: SELECT dateOfPurchase, costOfPurchase, countryOfPurchase, exchangeRate FROM purchasesTable p LEFT OUTER JOIN (SELECT e1.exchangeRate, e1.countryCode, e1.effectiveDate, min(e2.effectiveDate) AS enddate FROM exchangeRateTable e1 LEFT OUTER JOIN exchangeRateTable e2 ON e1.effectiveDate < e2.effectiveDate AND e1.countryCode = e2.countryCode GROUP BY e1.exchangeRate, e1.countryCode, e1.effectiveDate) e ON p.dateOfPurchase >= e.effectiveDate AND (p.dateOfPurchase < e.enddate OR e.enddate is null) AND p.countryOfPurchase = e.countryCode I had to make a couple small changes.

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  • Query with Two Different DSN

    - by morant
    I have a query: The "X" tables are from one data source and the "Y" table is from another...but there is join between the data sources. I can't seem to figure out how to enter the two different connection strings for this to run. ConnectionString="Dsn=Xdb;uid=xxx;pwd=xxxxxxx" ProviderName="System.Data.Odbc" ConnectionString="Dsn=Ydb;uid=xxx;pwd=xxxxxxx" ProviderName="System.Data.Odbc" Is this possible...am I just missing something?

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  • hibernate query cache specify cache duration

    - by cometta
    below is how i do query cache getHibernateTemplate().setCacheQueries(true); List<IssSection> result = (List<IssSection>) getHibernateTemplate().findByCriteria(crit); getHibernateTemplate().setCacheQueries(false); may i know how to specify duration of maximum time to cache this method? let say i want to clear cache after 5 mins expirated

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  • Query JSON String

    - by Theofanis Pantelides
    Hi, Is there a way to query a JSON (String) for a specific item? ie: String jSon = "{\"a\":{\"b\":27472483,\"c\":\"123\"}}"; such that: Int32 bob = (Int32)getFromJSON("a.b", jSon); // bob == 27472483 Thank you, -Theo

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  • mod rewrite and query strings

    - by all-R
    Hi all, I'm trying to rewrite some query strings I have in my URL like this : foo.com/index.php?page=admin&view=news&action=edit&id=3 to foo.com/admin/news/edit/3 But can't figure it out... it should also works if I only have the 'page' parameters for example, since I don't always have these 4 parameters (page,view,action,id) in my urls, of course. any suggestions?

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  • Continuation - Viewing FIRST_ROWS before query completes.

    - by Frank Developer
    I have identified the query constructs my users normally use. would it make sense for me to create composite indexes to support those constructs and provide FIRST_ROWS capability? If I migrate from SE to IDS, I will loose the ability to write low-level functions with c-isam calls, but gain FIRST_ROWS along with other goodies like: SET-READS for index scans (onconfig USE_[KO]BATCHEDREAD), optimizer directives, parallel queries, etc?

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  • linq get sum of two columns in one query

    - by Axarydax
    Hi, let's say that I have a table called Items (ID int, Done int, Total int) I can do it by two queries: int total = m.Items.Sum(p=>p.Total) int done = m.Items.Sum(p=>p.Done) But I'd like to do it in one query, something like this: var x = from p in m.Items select new { Sum(p.Total), Sum(p.Done)}; Surely there is a way to call aggregate functions from LINQ syntax...?

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  • Load parent and child table in one query linq to entitiy

    - by parminder
    Hi Experts, I have a following tables/classes structure in Linq to entities. ` Books { bookId, Title } Tags { TagId Tag } BooksTags { BookId TagId } ' Now I need to write a query which gives me result like this Class Result { bookId, Title Tags } Tags should be comma separated text from the tags table by joining all three tables. How to get it done. Thanks Parminder

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  • Hibernate Criteria query on association

    - by DD
    Hi There, How would I go about executing the following Hibernate query using the criteria API. I have an object Parent with List children. I would like to search through all parents and find which parents contain a specified child. i.e. List findParent(Child child); Thanks.

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