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  • What is faster in MySQL? WHERE sub request = 0 or IN list

    - by Nicolas Manzini
    Hello I was wondering what is better in MySQL. I have a SELECT querry that exclude every entry associated to a banned userID currently I have a subquerry clause in the WHERE statement that goes like AND (SELECT COUNT(*) FROM TheBlackListTable WHERE userID = userList.ID AND blackListedID = :userID2 ) = 0 Which will accept every userID not present in the TheBlackListTable Would it be faster to retrieve first all Banned ID in a previous request and replace the previous clause by AND creatorID NOT IN listOfBannedID Thank you!

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  • Retrieving multiple rows in SQL Server but distinct filtering only on one

    - by Nicklas
    I have this: SELECT Product.ProductID, Product.Name, Product.GroupID, Product.GradeID, AVG(tblReview.Grade) AS Grade FROM Product left Join tblReview ON Product.GroupID = tblReview.GroupID WHERE (Product.CategoryID = @CategoryID) GROUP BY Product.ProductID, Product.Name, Product.GroupID, Product.GradeID I would like to return only the rows where Product.Name is unique. If I make a SELECT DISTINCT the ProductID is different on every row so all the rows are unique.

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  • Kohana 3 - Query builder gives 0 rows

    - by pigfox
    The following query returns one row as expected when run from phpmyadmin. SELECT units . * , locations . * FROM units, locations WHERE units.id = '1' AND units.location_id = locations.id LIMIT 0 , 30 But when I try to do it in Kohana 3: $unit = DB::select('units.*', 'locations.*') ->from('units', 'locations') ->where('units.id', '=', $id)->and_where('units.location_id', '=', 'locations.id') ->execute()->as_array(); var_dump($unit); It prints array(0) { } What am I doing wrong?

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  • ui.datepicker.js form validation (solved)

    - by lena
    Hi, I'm using ui.datepicker.js and I want to validate the date field to make sure the user select a date. I have tried function allow_submit() { var f = document.all.frm; if (f.date.value == "") { jAlert("Please select a date"); return false; } //if return true; } and also have try if (f.date.value == "0000-00-00") { without succes Any clue?

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  • count and fetch rows in php

    - by Mac Taylor
    hey guys i have a table in my mysql database named (names) now everyone can save their real names now i want to query this table and find out how many times these names used forexample the output should be : Jakob (20) Jenny (17) now this is my own code : list($usernames) =mysql_fetch_row(mysql_query('SELECT name FROM table_user GROUP BY name ORDER BY COUNT(name) DESC LIMIT 50 ')); list($c) =mysql_num_rows(mysql_query('SELECT COUNT(name) FROM table_user GROUP BY name ')); print $usernames.'('.$c.')' is this a correct approach ?!

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  • SQL Server: How to iterate over function arguments

    - by atricapilla
    I'm trying to learn SQL and for demonstration purposes I would like to create a loop which iterates over function arguments. E.g. I would like to iterate over SERVERPROPERTY function arguments (propertynames). I can do single select like this: SELECT SERVERPROPERTY('ProductVersion') AS ProductVersion, SERVERPROPERTY('ProductLevel') AS ProductLevel, SERVERPROPERTY('Edition') AS Edition, SERVERPROPERTY('EngineEdition') AS EngineEdition; GO but how to iterate over all these propertynames? Thanks in advance.

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  • Folder Browser Dialog.

    - by Harikrishna
    I am using Folder Browser Dialog in my application to select a folder. Now I want such a thing that in the folder there should be only html files nothing else to be selected. Like if we have open file dialog and only we want to display html file then we use filter property of openfiledialog.So how can I do that in folder browser dialog to remain or select only html files in the folder ? That is how can I filter files in the folder browser dialog ?

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  • Selecting all but one field?

    - by gsquare567
    instead of SELECT * FROM mytable, i would like to select all fields EXCEPT one (namely, the 'serialized' field, which stores a serialized object). this is because i think that losing that field will speed up my query by a lot. however, i have so many fields and am quite the lazy guy. is there a way to say... `SELECT ALL_ROWS_EXCEPT(serialized) FROM mytable` ? thanks!

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  • please help me to find out where i am doing mistake in this code? i wnat retieve the value that i am

    - by user309381
    function reload(form) { var val = $('seltab').getValue(); new Ajax.Request('Website.php?cat=' +escape(val), { method:'get', onSuccess: function(transport){ var response = transport.responseText ; $("MyDivDB").innerHTML = transport.responseText ; alert("Success! \n\n" + response); }, onFailure: function(){ alert('Something went wrong...') } }); } </script> </head> title author pages $con = mysql_connect($dbhostname,$dbuserid,$dbpassword); if(!$con) { die ("connection failed".mysql_error()); } $db = mysql_select_db($dbname,$con); if(!$db) { die("Database is not selected".mysql_error()); } $query ="SELECT * FROM books NATURAL JOIN authors" ; $result = mysql_query($query); if(!$query) { die("Database is not query".mysql_error()); } while($row = mysql_fetch_array($result,MYSQL_ASSOC)) { $title = $row["title"]; $author = $row["author"]; $page = $row["pages"]; echo "<tr>"; echo "<td>$title</td>"; echo "<td>$author</td>"; echo "<td>$page</td>"; echo "</tr>"; } print "</table>"; echo "<select id = seltab onchange = 'reload(this.form)'>"; $querysel = "SELECT title_id,author FROM authors NATURAL JOIN books"; $result1 = mysql_query($querysel) ; while($rowID = mysql_fetch_assoc($result1)) { $TitleID = $rowID['title_id']; $author = $rowID['author']; print "<option value = $author>$author\n"; print "</option>"; } print "</select>"; ? Wbsite.php

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  • SQL optimization: deletes taking a long time

    - by Will
    I have an Oracle SQL query as part of a stored proc: DELETE FROM item i WHERE NOT EXISTS (SELECT 1 FROM item_queue q WHERE q.n=i.n) AND NOT EXISTS (SELECT 1 FROM tool_queue t WHERE t.n=i.n); A bit about the tables: item contains about 10k rows with an index on the n column item_queue contains about 1mil rows also with index on n column tool_queue contains about 5mil rows indexed as well I am wondering if the query/subqueries can be optimized somehow to make them run faster, I thought that deletes were generally fairly fast

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  • Joins and subqueries in LINQ

    - by Brian
    I am trying to do a join with a sub query and can't seem to get it. Here is what is looks like working in sql. How do I get to to work in linq? SELECT po.*, p.PermissionID FROM PermissibleObjects po INNER JOIN PermissibleObjects_Permissions po_p ON (po.PermissibleObjectID = po_p.PermissibleObjectID) INNER JOIN Permissions p ON (po_p.PermissionID = p.PermissionID) LEFT OUTER JOIN ( SELECT u_po.PermissionID, u_po.PermissibleObjectID FROM Users_PermissibleObjects u_po WHERE u_po.UserID = '2F160457-7355-4B59-861F-9871A45FD166' ) used ON (p.PermissionID = used.PermissionID AND po.PermissibleObjectID = used.PermissibleObjectID) WHERE used.PermissionID is null

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  • How to solve following issue in java?

    - by lakshmi
    Im getting following error while running the query. org.hibernate.hql.ast.QuerySyntaxException: expecting CLOSE, found 'LIMIT' near line 1, column 194 [from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' and gpsdate in (select id.gpsdate from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' ORDER BY id.gpsdate DESC LIMIT 1 ) and gpsstatus='true'] This is my Query.Please give the suggession what is the mistake in this query? data=session.createQuery[from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' and gpsdate in (select id.gpsdate from com.claystone.db.Gpsdata where id.mobileunitid = '2090818044' ORDER BY id.gpsdate DESC LIMIT 1 ) and gpsstatus='true']

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  • In SQL, can we always write an inner join statement as a main query and subquery if we only want to

    - by Jian Lin
    In SQL, can we always write an inner join statement as a main query and subquery or vice versa if we only want to find the intersection? For example, select * from gifts g where g.giftID in (select giftID from sentGifts); can do a join and show the gifts sent in the sentGifts table, but it won't be able to show the sentTime because that is inside the subquery. But if all we care is to find the intersection, without caring what is being displayed, then we can always convert one to the other?

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  • c# change global cursor

    - by andySF
    Hi, it is possible to change global mouse cursor from c#? the thing is i use a global hook shortcut key to capture a window like spywindow and i want to change mouse cursor globally when i select my handle and restore it when i click left mouse. Another question is about the click itself. When I'm in capture mode can i take click just for my purpose?it will be nice if i didn't press stuff on screen when i select my window!. Thanks!

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  • Contains performs MUCH slower with variable vs constant string MS SQL Server

    - by Greg R
    For some unknown reason I'm running into a problem when passing a variable to a full text search stored procedure performs many times slower than executing the same statement with a constant value. Any idea why and how can that be avoided? This executes very fast: SELECT * FROM table WHERE CONTAINS (comments, '123') This executes very slowly and times out: DECLARE @SearchTerm nvarchar(30) SET @SearchTerm = '123' SET @SearchTerm = '"' + @SearchTerm + '"' SELECT * FROM table WHERE CONTAINS (comments, @SearchTerm) Does this make any sense???

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  • Can't get Sum() working in Northwind example

    - by Vince
    Hi, The following code is generating a runtime error and I have no idea why. from o in Orders group o by o.Employee into employeeOrders select new { employeeOrders.Key.EmployeeID, employeeOrders.Key.FirstName, Orders = from eord in employeeOrders orderby eord.OrderID select new { eord.OrderID, eord.OrderDate, OrderTotal=eord.OrderDetails.Sum (od => od.UnitPrice) } } The error is Member access 'System.Decimal UnitPrice' of 'LINQPad.User.OrderDetails' not legal on type 'LINQPad.User.Orders I've also tried this in VS2010 with a standard drag and drop data context and same thing. Thanks in advance

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  • flash cs4 file reference. Event.COMPLETE not called on a MAC,

    - by jobbie jones
    Hi, I am working with a fileReference, however I'm having issues running on Safari on a MAC... EDIT The below example also doesnt work on Safari on a MAC... http://www.permadi.com/blog/2010/06/flash-as3-using-filereference-to-load-files-example-for-flash-cs4-and-above/ # The workflow on a PC runs as such: 1) Create file reference 2) attach addEventListener's for Event.SELECT and Event.COMPLETE 3) call the browse() method On a PC, Event.SELECT is fired when a file has been selected. Event.COMPLETE is fired when the file data is available to flash. If I select an 500meg file, it takes a few seconds before Event.COMPLETE is fired. If I attempt to access the file data properties (such as reading the data stream) before Event.COMPLETE is fired, I receive null reference errors... So far so good. However, on a MAC (speficially Safari, not tested other browsers), the Event.COMPLETE is not fired. I have checked the Adobe docs, which say Event.COMPLETE is fired when the upload is completed. So why does it get fired on windows when the fileReference has parsed the file, but the upload method has not yet been called... Can anyone help? Here's snippets of the code I am working on: public function browseFile(target:Object):void { var imagesFilter:FileFilter = new FileFilter("Allowed files", "*.jpg;*.bmp;*.flv;"); fileReference.browse([imagesFilter]); fileReference.addEventListener(Event.SELECT, fileSelect); fileReference.addEventListener(Event.COMPLETE, fileSelectComplete); } private function fileSelect(event:Event):void { // update label - IMPORTANT for large files as there's a delay while flash parses file, before control is handed back to this script... setStatusLabel("...loading file"); var fileReference:FileReference = event.target as FileReference; fileReference.addEventListener(Event.COMPLETE, fileSelectComplete); // load the file into the fileReference object fileReference.load(); } // Called when upload file has been processed by flash (a few secs for large files, or fileRef.data is null...) private function fileSelectComplete(event:Event):void { var fileReference:FileReference=event.target as FileReference; trace("ready to do things - but not fired on Safari on a MAC "); }

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  • increase a field value based on the radio button selection

    - by sts
    <% count = 1 % <% for question in @questions % <%=count%. <%= question.title if question.title% <% for response in @response % <% if response.question_id.eql?(question.id) % <%=radio_button(count, :voting, :count_modification) % <%= response.nomination % <% end % <% end % <% count += 1 % <% end % This is my whole code to implment the survey in views. if i give the count as third argument in radio button i cant select answer for each question. i can select only one answer for the whole survey.

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  • How to keep current selection for jqGrid pulldown edit

    - by WildBill
    When editing cells in jqGrid, specifically using a select pull-down to edit a cell, how does one make the current selection the current choice for that cell? In my page I have a cell where edittype:'select' is set but when one clicks on that row the value for that cells automatically changes to the first entry that my AJAX call returns. Is there something within JQGrid that needs to be set or does the object I send to jqGrid have to be of a certain format to do so?

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  • jQuery UI datepicker customization

    - by Chad
    I have the jQuery datepicker working, but I need to be able to select more than just dates. I need to be able to select between some strings as well "Yesterday" and "Today" to be precise. So, the underlying input can contain any date as well as the strings "Yesterday" or "Today". Is there some way I can do this by tweaking the existing jQuery UI datepicker?

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  • UITabbarController problem

    - by vinoth
    I Have two xib files named firstView and SecondView ........ I implemented these into tabbarcontroller items...Now its work fine.. When i select firsttabbaritem firstView was loaded also select second tabbaritem its loaded secondview... i have back button in the SecondView ...If some one clicked these back button means how can i load firstView?.... Can anyone help me? Thanks in advance........

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  • When do I need to use, or not use, .datum when appending an svg element

    - by Bobby Gifford
    svg = d3.select("#viz").append("svg").datum(data) //I often see .datum when an area chart is used. Are there any rules of thumb for when .datum is needed? var area = d3.svg.area() .x(function(d) { return x(d.x); }) .y0(height) .y1(function(d) { return y(d.y); }); var svg = d3.select("body").append("svg") .attr("width", width) .attr("height", height); svg.append("path") .datum(data) .attr("d", area);

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