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  • Help to choose NoSQL database for project

    - by potapuff
    There is a table: doc_id(integer)-value(integer) Approximate 100k doc_id and 27?? rows. Majority query on this table - searching documents similar to current document: select 10 documents with maximum of (count common to current document value)/(count ov values in document). Nowadays we use PostgreSQL. Table weight (with index) ~1,5 GB. Average query time ~0.5s. Should I transfer all this to NoSQL base, if so, what?

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  • stored procedures, error #1312, CLIENT_MULTI_RESULTS flag

    - by aadersh patel
    i am writing stored procedures in MySQL that return values; CREATE PROCEDURE getCustomerById (id int) BEGIN SELECT * FROM customer WHERE customer.id = id; END; and i get the error that the results cannot be shown in the given context. after some googling, i think that i need to set the flag "CLIENT_MULTI_RESULTS" - i am connecting the database from JDBC using a java app, but cant find where to set it! any suggestions?

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  • Updating a *.CSPROJ using MSBUILD API.

    - by BENBUN Coder
    Based on question : Reading a *.CSPROJ file in C# I have code to extract some properties out of a *.csproj file, along the lines of : Project project = new Project(); var Property001= from pg in project.PropertyGroups.Cast<BuildPropertyGroup>() from item in pg.Cast<BuildProperty>() where item.Name == "Property001" select item.Value.ToString(); This works fine, but the next question is how do I update the property using LINQ as well?

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  • C# code for viewev tables

    - by simon
    Can somebody write me a code, how to view data from tables in c# (using select statement)? I tried it myself and posted the code here, but i didn't get it right. Please help!

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  • how to refresh/reload dhtmlx grid

    - by steve
    I am using dhtmlx grid.I have two grids named grid1,grid2. I have loaded the two grids using json object. If i select one record in the grid1 and click on the button that record has to load in the second record.I am able to load that selected record in the second grid using document.location.reload(true);with this, the total page is refreshing.but i want to refresh grid2 only. I want to refresh grid2 only after click on the button.how can i refresh/reload grid2.

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  • ASP SQL Error Handling

    - by J Harley
    Hello, I am using Classic asp and SQL Server 2005. This is code that works (Provided by another member of Stack Overflow): sqlStr = "USE "&databaseNameRecordSet.Fields.Item("name")&";SELECT permission_name FROM fn_my_permissions(null, 'database')" This code checks what permissions I have on a given database - the problem being - if I dont have permission it throws an error and doesn't continue to draw the rest of my page. Anyone got any ideas on remedying this? Many Thanks, Joel

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  • How to use regular expression in lxml xpath?

    - by Arty
    I'm using construction like this: doc = parse(url).getroot() links = doc.xpath("//a[text()='some text']") But I need to select all links which have text beginning with "some text", so I'm wondering is there any way to use regexp here? Didn't find anything in lxml documentation

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  • Database schema for multiple category/product relationship

    - by sree01
    I want to design a database for an e-commerce application with category/subcategory management. Please suggest a database schema where we can create categories and subcategories and add products to those categories. Each product can have multiple categories and we can select products belong to multiple categories using a boolean database query Thanks

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  • sql server optional parameters: syntax for between clause

    - by Aseem Gautam
    @FromDate datetime = null @ToDate datetime = null SELECT * FROM TABLE WHERE .... AND [PI].Date BETWEEN @FromDate AND @ToDate When any date is null, the records are not displayed. What is the correct syntax so that I can get all records if any of the dates are null. I have thought of this: @FromDate datetime = '01/01/1901', @ToDate datetime = '12/31/9999' Thanks.

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  • Corner Cases, Unexpected and Unusual Matlab

    - by Mikhail
    Over the years, reading others code, I encountered and collected some examples of Matlab syntax which can be at first unusual and counterintuitive. Please, feel free to comment or complement this list. I verified it r2006a. set([], 'Background:Color','red') Matlab is very forgiving sometimes. In this case, setting properties to an array of objects works also with nonsense properties, at least when the array is empty. myArray([1,round(end/2)]) This use of end keyword may seem unclean but is sometimes very handy instead of using length(myArray). any([]) ~= all([]) Surprisigly any([]) returns false and all([]) returns true. And I always thought that all is stronger then any. EDIT: with not empty argument all() returns true for a subset of values for which any() returns true (e.g. truth table). This means that any() false implies all() false. This simple rule is being violated by Matlab with [] as argument. Loren also blogged about it. Select(Range(ExcelComObj)) Procedural style COM object method dispatch. Do not wonder that exist('Select') returns zero! [myString, myCell] Matlab makes in this case an implicit cast of string variable myString to cell type {myString}. It works, also if I would not expect it to do so. [double(1.8), uint8(123)] => 2 123 Another cast example. Everybody would probably expect uint8 value being cast to double but Mathworks have another opinion. a = 5; b = a(); It looks silly but you can call a variable with round brackets. Actually it makes sense because this way you can execute a function given its handle. a = {'aa', 'bb' 'cc', 'dd'}; Surprsisingly this code neither returns a vector nor rises an error but defins matrix, using just code layout. It is probably a relict from ancient times. set(hobj, {'BackgroundColor','ForegroundColor'},{'red','blue'}) This code does what you probably expect it to do. That function set accepts a struct as its second argument is a known fact and makes sense, and this sintax is just a cell2struct away. Equvalence rules are sometimes unexpected at first. For example 'A'==65 returns true (although for C-experts it is self-evident). About which further unexpected/unusual Matlab features are you aware?

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  • See images in SSMS?

    - by Vaccano
    I was browsing around and found this blog post: http://erikej.blogspot.com/2010/04/version-3-of-exportsqlce-now-available.html (It is for a great add in if you user SQL Server CE.) On that post I saw an screen shot of SSMS with images in the results. How is this done? I have images in my database (PNG files that are serialized via memory stream), but I just see numbers when I select the image column.

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  • Query Results Not Expected

    - by E-Madd
    I've been a CF developer for 15 years and I've never run into anything this strange or frustrating. I've pulled my hair out for hours, googled, abstracted, simplified, prayed and done it all in reverse. Can you help me? A cffunction takes one string argument and from that string I build an array of "phrases" to run a query with, attempting to match a location name in my database. For example, the string "the republic of boulder" would produce the array: ["the","republic","of","boulder","the republic","the republic of","the republic of boulder","republic of","republic of boulder","of boulder"]. Another cffunction uses the aforementioned cffunction and runs a cfquery. A query based on the previously given example would be... select locationid, locationname, locationaliasname from vwLocationsWithAlias where LocationName in ('the','the republic','the republic of','republic','republic of','republic of boulder','of','of boulder','boulder') or LocationAliasName in ('the','the republic','the republic of','republic','republic of','republic of boulder','of','of boulder','boulder') This returns 2 records... locationid - locationname - locationalias 99 - 'Boulder' - 'the republic' 68 - 'Boulder' - NULL This is good. Works fine and dandy. HOWEVER... if the string is changed to "the republic", resulting in the phrases array ["the","republic","the republic"] which is then used to produce the query... select locationid, locationname, locationaliasname from vwLocationsWithAlias where LocationName in ('the','the republic','republic') or LocationAliasName in ('the','the republic','republic') This returns 0 records. Say what?! OK, just to make sure I'm not involuntarily HIGH I run that very same query in my SQL console against the same database in the cf datasource. 1 RECORD! locationid - locationname - locationalias 99 - 'Boulder' - 'the republic' I can even hard-code that sql within the same cffunction and get that one result, but never from the dynamically generated SQL. I can get my location phrases from another cffunction of a different name that returns hard-coded array values and those work, but never if the array is dynamically built. I've tried removing cfqueryparams, triple-checking my datatypes, datasource setups, etc., etc., etc. NO DICE WTF!? Is this an obscure bug? Am I losing my mind? I've tried everything I can think of and others (including Ray Camden) can think of. ColdFusion 8 (with all the latest hotfixes) SQL Server 2005 (with all the greatest service packs) Windows 2003 Server (with all the latest updates, service packs and nightly MS voodoo)

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  • C# Messagebox With ComboBox

    - by Goober
    How can I produce a messagebox in a C# Win Forms application that displays a combobox with a series of values to select as well as the usual "Ok" button? I would like to be able to trigger this on calling the MessageBox.Show() method. I am assuming some sort of override will be necessary, but I haven't seen any pre-existing examples for this.

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  • Convert query from native SQL to LINQ request

    - by mike
    Please, help me. How i can translate this SQL query to LINQ request? SELECT TOP (1) PERCENT DATEDIFF(DAY, dbo.PO.ORDER_DATE, GETDATE()) AS Age FROM dbo.ITEMS INNER JOIN dbo.X_PO ON dbo.ITEMS.ITEMNO = dbo.X_PO.ITEM_CODE INNER JOIN dbo.PO ON dbo.X_PO.ORDER_NO = dbo.PO.DOC_NO AND dbo.X_PO.STATUS = dbo.PO.STATUS WHERE (dbo.ITEMS.ITEMNO = 'MBIN001') AND (dbo.X_PO.STATUS = 3) ORDER BY Age

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  • How to call a scalar function in a stored procedure

    - by Luke101
    I am wacking y head over the problem with this code. DECLARE @root hierarchyid declare @lastchild hierarchyid SELECT @root = NodeHierarchyID from NodeHierarchy where ID = 1 set @lastchild = getlastchild(@root) it says it does not recognize getlastchild function. What am I doing wrong here

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  • NPGSQL seems to have a rather large bug?

    - by Mr Shoubs
    Hello, this is a weird one, when I run the following code all rows are returned from the db. Imagaine what would happen if this was an update or delete. Dim cmd As New NpgsqlCommand cmd.Connection = conn cmd.CommandText = "select * FROM ac_profiles WHERE profileid = @profileId" cmd.Parameters.Add("@profile", 58) Dim dt As DataTable = DataAccess2.DataAccess.sqlQueryDb(cmd) DataGridView1.DataSource = dt My question is why is this happening?

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  • Regex Query to get string value

    - by Alex
    Hi all, I am looking for a regex query that would allow me to retrieve a value from a string here are examples of my string: home.aspx?StudyID=0020101&aa=72 randompage.aspx?studyid=3023603&aa=40 myconfig.aspx?studyid=0021600&aa=40 I need to get the numerical value of the 'studyid' variable, please note that the name of the page will change so simply doing the substring and counting char spaces didn't work I unfortunately cannot use request.querystring method as this string is stored in the database and a select statement will be used for running this regex query Thanks

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  • Get sum of two columns in one LINQ 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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  • mysql query - blog posts and comments with limit

    - by Lemon
    Hi, I have 2 tables: comments and posts and I'd like to display a list of 15 posts and maximum 2 most recent comments under each blog post the database scheme looks like this posts_table: post_id, post_txt, post_timestamp comments_table: post_id, comment_txt, comment_timestamp how the mysql query should look like to select 15 posts and related comments (max 2 most recent ones per post) ??? thanks, Leo

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