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  • LLBLGEN: Linq to LLBGEN don't work

    - by StreamT
    I want to make custom select from the database table using Linq. We use LLBGEN as ORM solution. I can't do LINQ query to Entities Collection Class unless I call GetMulti(null) method of it. Is it possible to do LINQ query to LLBGEN without extracting all table first? BatchCollection batches = new BatchCollection(); BatchEntity batch = batches.AsQueryable() .Where(i => i.RegisterID == 3) .FirstOrDefault(); // Exception: Sequence don't contains any elements batches = new BatchCollection(); batches.GetMulti(null); // I don't want to extract the whole table. BatchEntity batch = batches.AsQueryable() .Where(i => i.RegisterID == 3) .FirstOrDefault(); //Works fine

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  • Nhibernate many to many criteria query with subselect

    - by Max
    I have a simple example of a blog: a Post table, a Tag table and a Post_Tag_MM lookup table linking the two tables. I use this hql query in order to fetch all posts, that DONT have some tags: var result = session .CreateQuery(@" select p from Post p join p.Tags t where (select count(ti) from p.Tags ti where ti.Uid in (:uidList)) = 0 ") .SetParameterList("uidList", uidList) .SetResultTransformer(new DistinctRootEntityResultTransformer()) .List<Post>(); How can this many-to-many query and the subselect translated into a criteria query? I dont quite understand the DetachedCriteria API yet and could not get it to return the right resultset. Thank you very much in advance. Regards, Max

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  • SQL: Gather right hand values from a join

    - by Max Williams
    Let's say a question has many tags, via a join table called taggings. I do a join thus: SELECT DISTINCT `questions`.id FROM `questions` LEFT OUTER JOIN `taggings` ON `taggings`.taggable_id = `questions`.id LEFT OUTER JOIN `tags` ON `tags`.id = `taggings`.tag_id I want to order the results according to a particular tag name, eg 'piano', so that piano is at the top, then by all the other tags in alphabetical order. Currently i'm using this order clause: ORDER BY (tags.name = 'piano') desc, tags.name Which is going completely wrong - the first results i get back aren't even tagged with 'piano' at all. I think my problem is that i need to group the tag names somehow and do my ordering test against that: i think that doing it against the straight tags.name isn't working due to the structure of the resultant join table (it does work if i just do a simple select on the tags table) but i can't get my head around how to fix it. grateful for any advice, max

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  • XML output from MySQL

    - by NumberFour
    Hi, is there any chance of getting the output from a MySQL query directly to XML? Im referring to something like MSSQL has with SQL-XML plugin, for example: SELECT * FROM table WHERE 1 FOR XML AUTO returns text (or xml data type in MSSQL to be precise) which contains an XML markup structure generated according to the columns in the table. With SQL-XML there is also an option of explicitly defining the output XML structure like this: SELECT 1 AS tag, NULL AS parent, emp_id AS [employee!1!emp_id], cust_id AS [customer!2!cust_id], region AS [customer!2!region] FROM table FOR XML EXPLICIT which generates an XML code as follows: <employee emp_id='129'> <customer cust_id='107' region='Eastern'/> </employee> Do you have any clues how to achieve this in MySQL? Thanks in advance for your answers.

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  • NHibernate ICriteria with a bag

    - by plunk
    Hi, Just a quick question. If I've got 2 tables that are joined in a 3rd table with a many-to-many relationship, is it possible to write an ICriteria with expressions in one of the tables and the join table? Lets say the mapping file looks something like: <bag name ="Bag" table="JoinTable" cascade ="none"> <key column="Data_ID"/> <many-to-many class="Data2" column="Data2_ID"/> </bag> Is it then possible to write an ICriteria like the following? ICriteria crit = session.CreateCriteria(typeof(Data)); crit.Add(Expression.Eq("Name", name)); crit.Add(Expression.Between("Date", startDate, endDate)); crit.Add(Expression.Eq("Bag", data2IDNumber)); When I try this, it tells me I the expected type is IList, whereas the actual type is Bag. Thanks.

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  • Consolidate data from many different databases into one with minimum latency

    - by NTDLS
    I have 12 databases totaling roughly 1.0TB, each on a different physical server running SQL 2005 Enterprise - all with the same exact schema. I need to offload this data into a separate single database so that we can use for other purposes (reporting, web services, ect) with a maximum of 1 hour latency. It should also be noted that these servers are all in the same rack, connected by gigabit connections and that the inserts to the databases are minimal (Avg. 2500 records/hour). The current method is very flakey: The data is currently being replicated (SQL Server Transactional Replication) from each of the 12 servers to a database on another server (yes, 12 different employee tables from 12 different servers into a single employee table on a different server). Every table has a primary key and the rows are unique across all tables (there is a FacilityID in each table). What are my options, these has to be a simple way to do this.

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  • SQL Server v.Next ("Denali") : How a columnstore index is not like a normal index

    - by AaronBertrand
    At the end of my Denali presentation at SQL Saturday #65 in Vancouver, a member of the audience asked, "What makes a columnstore index different from a regular nonclustered index?" At the end of a busy day, I was at a loss for an answer, and I'll explain why. First, I'll briefly explain the basic, core, high-level functionality of a columnstore index (you can read a lot more details in this white paper ). Basically, instead of storing index data together on a page, it divvies up the data from each...(read more)

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  • JPA @TableGenerator shared between multiple entities

    - by Mauricio
    Hi Guys, I have a 'dog' Entitiy with an @Id and a @TableGenerator ... @TableGenerator(table = "seq", name = "dog_gen", pkColumnName = "seq_name", valueColumnName="seq_val") @Id @GeneratedValue(strategy = GenerationType.TABLE, generator = "dog_gen") private Long id; ... Is there a way to reuse the same table generator (dog_gen) in other entity? I want to keep the same id sequence in two independent Entities, say dog=1, dog=2, dog=3, cat=4, cat=5, dog=6 and so on... Both entities don't share a common superclass to implement some kind of inheritance with the id property. If I add the @GeneratedValue( generator="dog_gen") on my cat entity, omitting the @TableGenerator declaration throws an Exception saying it can't find the generator when starting the context. Caused by: org.hibernate.AnnotationException: Unknown Id.generator: dog_gen at org.hibernate.cfg.BinderHelper.makeIdGenerator(BinderHelper.java:413) at org.hibernate.cfg.AnnotationBinder.bindId(AnnotationBinder.java:1795) at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1229) at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:733) at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:498) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:277)

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  • Microsoft Semantic Search

    - by sqlartist
    This is something I really get excitied about - Microsoft Semantic Search. There is an excellent PDC demo and presentation here - http://microsoftpdc.com/Sessions/SVR32 . Intially I didn't think this was SQL related but I read that it may be included in future versions of SQL Server. For many years I have written linguistic, semantic, text extraction & clustering code in SQL Server for fun - now finally I can throw that all away and use this tool :) It reminds me of the Microsoft Research...(read more)

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  • Policy Implementation is Damaging Organizations: Economist Intelligence Unit

    - by michael.seback
    Read new research revealing the hidden risks of inefficient policy implementation The frenetic pace of regulatory and legislative change means public and private sector organizations must continuously update internal policies - in particular, as associated with decision making and disbursements. Yet with policy management efforts alarmingly under-resourced and under-funded, the risk and cost of non-compliance - and their associated implications - are growing daily. To find out how inefficient policy management could be putting your business at risk, read your complimentary copy of the full EIU paper - Enabling Efficient Policy Implementation - today.

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  • How to generate two XML files from a single HL7 file and insert both into two different columns as a single record?

    - by Vivek Ratnaparkhi
    I have Source Connector Type as 'File Reader' which is reading HL7 files and Destination Connector Type as 'Database Writer'. My database table has two columns Participant_Information SPR_Information I want to transform a single HL7 file into two XML files one for Participant_Information column and other for SPR_Information column and need to insert both as a single record into the database table. I'm able to insert one XML at a time but not able to find the way to insert both the XMLs as a single record into the database table. Any help is really greatly appreciated!

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  • HBase schema help

    - by Jody Powlette
    Coming from a SQL Server background, I'm a newbie with regard to HBase, but the technology looks to be a good fit for what we're doing and the cost is definitely right! I need to maintain a list of log entries which normally I would create in an RDBS as: create table Log ( UserID int, SiteID int, Page varchar(50), Date smalldatetime ) where one user may have 0 or 1000 rows in this simple table. Typical queries would be to find all the rows for one user or all the rows for one user on one site. How does this translate into a "map" in HBase where there is no "row key" AND the same (SiteID,Page) may appear many times. My first thought is that UserID is a row key, but I still don't understand "column families" and the other terminology well enough to understand how to setup the table to hold this data where the one UserID can have many (SiteID,Page,Date) "rows". Any direction is appreciated!

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  • SQL to retrieve aggregated data with computed columns

    - by Remnant
    I have a table that looks like this for about ~30 students: StudentID Course* CourseStatus 1 Math Pass 1 English Fail 1 Science Pass 2 Math Fail 2 English Pass 2 Science Fail etc. *In my actual database the 'Course' column is a CourseID e.g. (1 = Math; 2 = English etc.) which references a 'CourseName' table. I amended the table above just to make it clear the nature of the problem. I want to write a query (stored procedure) in SQL that summarises performance for a given course and returns the following: EXEC usp_GetCourseSummary 'Math' Total Students Total Pass % Pass Total Fail % Fail 25 15 60 10 40 Have been scratching my head on this one for some time. Any ideas?

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  • upgrading to worpdress 3.5 erased all posts and pages, wiped database

    - by James
    So I have upgraded to wordpress 3.5 and that seemed to have erased all posts and custom post types, media images, sliders etc' I have made a backup using both pressbackup and backupbuddy but when I try to restore the database (or everything). when it is done, if I look at the front end, everything is back and looks great but then when I go to the back end it says the database needs to be upgraded and doesn't let me bypass that. if i click ok it prompts the following message and after that everything is wiped again: WordPress database error: [Table 'db446353270.wp_categories' doesn't exist] SELECT * FROM wp_categories ORDER BY cat_ID WordPress database error: [Table 'db446353270.wp_post2cat' doesn't exist] SELECT post_id, category_id FROM wp_post2cat GROUP BY post_id, category_id WordPress database error: [Table 'db446353270.wp_linkcategories' doesn't exist] SELECT cat_id, cat_name FROM wp_linkcategories WordPress database error: [Unknown column 'link_category' in 'field list'] SELECT link_id, link_category FROM wp_links please advise. Thanks

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  • how to use found_rows in oracle package to avoid two queries

    - by Omnipresent
    I made a package which I can use like this: select * from table(my_package.my_function(99, 'something, something2', 1, 50)) I make use of the package in a stored procedure. Sample stored procedure looks like: insert into something values(...) from (select * from table(my_package.my_function(99, 'something, something2', 1, 50))) a other_table b where b.something1 = a.something1; open cv_1 for select count(*) from table(my_package.my_function(99, 'something, something2', 1, 50)) So I am calling the same package twice. first time to match records with other tables and other stuff and second time to get the count. Is there a way to get the count first time around and put it into a variable and second time around I just pick that variable rather than calling the whole query again? Hope it makes sense.

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  • Unable to list windows shares from terminal.

    - by karthick87
    I am unable to list windows shares from terminal. I am getting the following error, root@ITSTA2:~# smbclient -L 172.XX.XX.XX -U john params.c:Parameter() - Ignoring badly formed line in configuration file: # Samba config file WARNING: The "Share modes" option is deprecated Unknown parameter encountered: "read Size" Ignoring unknown parameter "read Size" Enter john's password: Unknown socket option SO_KEEPLIVE session setup failed: NT_STATUS_LOGON_FAILURE Someone sort out the problem pls..

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  • speed up a sql query to mysql?

    - by fayer
    in my mysql database i've got the geonames database, containing all countries, states and cities. i am using this to create a cascading menu so the user could select where he is from: country - state - county - city. but the main problem is that the query will search through all the 7 millions rows in that table each time i want to get the list of children rows, and that is taking a while 10-15 seconds. i wonder how i could speed this up: caching? table views? reorganizing table structure somehow? and most important, how do i do these things? are there good tutorials you could link to me? i appreciate all help and feedback discussing smart ways of handling this issue!

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  • mySQL experts - need help with 'intersect'

    - by MTCreations
    I know that mySQL 5.x does not support INTERSECT, but that seems to be what I need. Table A: Products (p_id) Table B: Prod_cats (cat_id) - category info (name, description, etc) Table C: prod_2cats (p_id, cat_id) - many to many prod_2cats holds the many (1 or more) categories that have been assigned to Products (A). Doing a query/filter lookup, (user interactive) and need to be able to select across multiple categories the products that meet ALL the criteria. Ex: - 80 products assigned to Category X - 50 products assigned to Category Y - but only 10 products (intersect) are assigned to BOTH cat X AND cat Y This sql works for one category: SELECT * FROM products WHERE p_show='Y' AND p_id IN ( SELECT p_id FROM prods_2cats AS PC WHERE PC.cat_id =" . $cat_id ." <-$cat_id is sanitized var passed from query form . I can't seem to find the means to say ' give me the intersect of cat A and cat B' and get back the subset (10 records, from my example) Help!

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  • MySQL unique clustered constraint not constraining as expected

    - by igor
    I'm creating a table with: CREATE TABLE movies ( id INT AUTO_INCREMENT PRIMARY KEY, name CHAR(255) NOT NULL, year INT NOT NULL, inyear CHAR(10), CONSTRAINT UNIQUE CLUSTERED (name, year, inyear) ); (this is jdbc SQL) Which creates a MySQL table with a clustered index, "index kind" is "unique", and spans the three clustered columns: full size However, once I dump my data (without exceptions thrown), I see that the uniqueness constraint has failed: SELECT * FROM movies WHERE name = 'Flawless' AND year = 2007 AND inyear IS NULL; gives: id, name, year, inyear 162169, 'Flawless', 2007, NULL 162170, 'Flawless', 2007, NULL Does anyone know what I'm doing wrong here?

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  • Easy remote communication without WCF

    - by Ralf Westphal
    If you´ve read my previous posts about why I deem WCF more of a problem than a solution and how I think we should switch to asynchronous only communication in distributed application, you might be wondering, how this could be done in an easy way. Since a truely simple example to get started with WCF still is drawing quite some traffic to this blog, let me pick up on that and show you, how to accomplish the same but much easier with an async communication API. For simplicities sake let me put all...(read more)

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  • strange SqlAlchemy update behaviour

    - by Max
    I'm new to SqlAlchemy and Elixir, so I've started from tutorial and tried to create table, insert a record, and then update it as follows: #'elixir_test.py' from elixir import * metadata.bind = "postgresql://myuser:mypwd@localhost:5432/dbname" metadata.bind.echo = True class Movie(Entity): title = Field(Unicode(30)) year = Field(Integer) description = Field(UnicodeText) def __repr__(self): return '<Movie "%s" (%d)>' % (self.title, self.year) and in another file in the same directory: from elixir_test import * setup_all() #create table create_all() Movie(title=u"Blade Runner", year=1982) #add record session.commit() #get records Movie.query.all() #trying to update record and commit changes, BUT... movie = Movie.query.first() movie.year = 1983 session.commit() #now we have two records in our table, one #with year=1982 and one with year=1983 Movie.query.all() What did I missed?

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  • Need direction in creating an application which generates a crud form

    - by AlteredConcept
    Hi all, I was wondering if anyone knew of any way i can implement an application which will do the following. Allow a user to specifiy a connection string to a sql db Allow a user to specify a table in the db Allow a user to specify columns from the specified table Generate Views & a Controller with Crud methods on the fly for the specified table columns in a subdirectory on the current web app. I'm aware that there are apps that currently do this (such as sharepoints list creation stuff), but i'd like to see how this was accomplished and recreate it for my own learning purposes. Thanks alot for any help

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