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  • Is it possible to write syntax like - ()() ?

    - by dotnetdev
    I read in an ebook somewhere (which I'm desperate to find again), that, by using delegates, it is possible to write code which has syntax as follows: ()(); // where delegate proceeds this. Can anyone provide any details how this would be possible/in what situation this would occur? Thanks

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  • Powershell SQL query--connection string

    - by sean
    I am trying to query several different SQL servers and run a command on each of them. I am unable to get the connection string right. Code, below. I receive the following error:Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. I thought if I passed it the credentials it wouldn't care about the domain. How do I get around this? Thanks in advance. $serverList = @(Get-Content "c:\AllServers.txt") $query = "SELECT COUNT(thing) AS [RowCount] FROM My_table" $Database = "My_DB" # Read a file foreach ( $svr in $serverList ) { $conn=new-object System.Data.SqlClient.SQLConnection $ConnectionString = "Server={0};Database={1};User ID=sa;Password=Password;Integrated Security=True" -f $svr, $Database $conn.ConnectionString=$ConnectionString $conn.Open() $cmd=new-object system.Data.SqlClient.SqlCommand($Query,$conn) $conn.Close() }

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  • ActiveDirectory - LDAP query for objectCategory unexpected results

    - by FinalizedFrustration
    AD is at 2003 functional level, some of our DC's are running Windows Server 2003, some are 2008, some are 2008 R2. When using the following query: (objectCategory=user) I do not expect to see any result where the objectCategory attribute is equal to 'CN=Person,CN=Schema,CN=Configuration,DC=Contoso' I expect only objects where the objectCategory attribute is equal to 'CN=User,CN=Schema,CN=Configuration,DC=Contoso' However, the query does indeed return all objects with the objectCategory attribute equal to 'CN=Person,CN=Schema,CN=Configuration,DC=Contoso' My question then is this: Why do I see the search results that I do? Does AD actively translate queries that include (objectCategory=user) to (objectCategory=Person)? I have looked at the schema definitions for both the Person and the User class, but I cannot see any reason for the query results as I am experiencing them. I know that the User class is a subclass of the organizationalPerson class, which is a subclass of Person, but I can't see an attribute value that would explain this translation.

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  • How SSD hard drive affected speed of your website (asp.net/linq/ms sql database)

    - by Sergey Osypchuk
    I have a small database (<1G) But we have a lot of complex logi? in website and client complains on render time, which is 3-5 seconds. We are not google, and thousands of users a day is our dream, so size is not a problem, but speed is important. Can anybody share with experience with SSD drives for ASP.NET (MVC)/LINQ/MS SQL based application ? How you performance increased? UPDATE: this whitepaper states that it will be 20 times faster. http://www.texmemsys.com/files/f000174.pdf

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  • MS Access Query Criteria Issue

    - by xxl3ww
    Currently I have a MS Access database query that has a field named FedEXDetTotal that totals 9 FedEX charge fields. I have another field that is from our inhouse system called "Total Charge". This is just a normal number field. I have created another Field in this query Diff: [FedEXDetTotal]-[Total Charge] This tells me the difference between the Fedex charge and what we actually charged. Everything works OK with this, but when I try to put the criteria 5 for the Diff field, when I run the query, I get a prompt saying "Enter Parameter Value FedEXDetTotal". Why is Access doing this? How do I get around this? I'm trying to start out with something simple(5), but what I really want is [Forms]![Dis].[txtbox_Diff].

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  • why SET timestamp in Slow query logs?

    - by user79483
    I use mysql Ver 14.12 Distrib 5.0.86, for unknown-linux-gnu (x86_64) using readline 5.1, I am seeing below query in the slow query logs: # Time: 110907 7:00:09 # User@Host: XXX[XXX] @ [10.1.10.1] # Query_time: 3 Lock_time: 0 Rows_sent: 1 Rows_examined: 347519 SET timestamp=1315378809; # administrator command: Quit; # User@Host: XXX[XXX] @ [10.1.10.1] # Query_time: 3 Lock_time: 0 Rows_sent: 0 Rows_examined: 0 use XXX; SET timestamp=1315378809; # administrator command: Quit; # User@Host: XXX[XXX] @ [10.1.10.1] # Query_time: 3 Lock_time: 0 Rows_sent: 1 Rows_examined: 1 use XXX; SET timestamp=1315378809; # administrator command: Quit; It is on a master, with one slave attached. why SET timestamp in Slow query logs ? anyone can help me.

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  • Add WhereParameters to LinqDataSource in Selecting event

    - by Steven
    I have a repeater using a LinqDataSource as a data source. When a query string is entered, I'd like to filter the results, but ONLY when a query string is entered. If there is no query string, the results should not be filtered, all results should be returned. I'm trying to add a WhereParameter to my LinqDataSource in the Selecting event of the LinqDataSource, but it's not working. Here's my code: protected void ldsImages_Selecting(object sender, LinqDataSourceSelectEventArgs e) { if (Request.QueryString["id"] != null) { e.WhereParameters.Add("ImageTypeID", Request.QueryString["id"]); } }

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  • IEnumerable<> to IList<>

    - by nachid
    I am using Linq to query my database and returning a generic IList. Whatever I tried I couldn't convert an IQueryable to an IList. Here is my code. I cannot write simpler than this and I don't understand why it is not working. public IList<IRegion> GetRegionList(string countryCode) { var query = from c in Database.RegionDataSource where (c.CountryCode == countryCode) orderby c.Name select new {c.RegionCode, c.RegionName}; return query.Cast<IRegion>().ToList(); } This returns an list with the right number of items but they are all empty Please help, I am bloqued with this for a couple of days now

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  • What can cause legit MySql INSERT INTO command to fail?

    - by Makis
    I can't figure out what's causing my INSERT INTO's to fail to certain table in MySql. I can manage them to other tables. The table looks like: CREATE TABLE IF NOT EXISTS `Match` ( `id` int(11) NOT NULL AUTO_INCREMENT, `match_no` int(11) NOT NULL, `season` int(11) NOT NULL, `hometeam` int(11) NOT NULL, `awayteam` int(11) NOT NULL, PRIMARY KEY (`id`), KEY `match_no` (`match_no`), KEY `season` (`season`), KEY `hometeam` (`hometeam`), KEY `awayteam` (`awayteam`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ; And the command is INSERT INTO Match (`match_no`, `season`, `hometeam`, `awaytem`) VALUES (1, 1, 2, 3) All I get is: 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Match (match_no, season, hometeam, awaytem) VALUES (1, 1, 2, 3)' at line 1 I have checked the manual and half-a-dozen examples from the web and whatnought and tried all sorts of changes to the syntax in case there is some MySql specific oddity, but nothing seems to work.

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  • How can you increase timeout in Linq2Entities?

    - by Russell Steen
    I'm doing a basic select against a view. Unfortunately the result can be slow and I'm getting timeout errors intermittently. How can I increase the timeout? Using .NET 3.5, Sql Server 2000, Linq2Entities I'm using the very basic query List<MyData> result = db.MyData.Where(x.Attribute == search).ToList(); Fixing the query so that it's faster on the DB side is not an option here. Exact Error: "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding." Update: I'd prefer to just change it for this one query.

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  • ASP.Net Custom Field From Query In DataSet

    - by boruchsiper
    I added a new query to a table adapter in a DataSet. This query adds another field to the query whcih is a sum from another table. Here is the full query: SELECT (SELECT COUNT(donationID) AS Expr1 FROM Donations AS da WHERE (dn.donorID = donorID)) AS Count, Solicitor, address1, address2, city, companyName, country, donorID, email, first, last, phoneHome, phoneMobile, phoneWork, state, webURL, zip, (select sum(amount) from Donations as dna where dna.donorID = dn.donorID) as SumDonations FROM Donors AS dn order by last The new field is represented in the last part of the query: (select sum(amount) from Donations as dna where dna.donorID = dn.donorID) as SumDonations I can preview the data in the xsd but the last field "SumDonations" is not showing up as a field I can add to my gridview. I rebuilt the website but no luck. What am I missing?

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  • change url or query string wihout reloading using jquery plugin

    - by Pradyut Bhattacharya
    Hi I want to change the url or query string without reloading the page... I have used the QUERY STRING OBJECT plugin for jquery I have this example page in which on click of a album it should change the query string... Now i can change the url using the code window.location.href = $.query.set('aid', a_id); but it goes for reloading the page... and this code does not have any effect var newUrl = $.query.set('aid', a_id); How can do without reloading the page... how can i do without reloading the page... Thanks Pradyut India

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  • How do I write this as an expression?

    - by itchi
    I'm trying to rewrite a linq to entities query to an expression. My model is a School can have many Persons where Persons are inherited out to teachers, students, etc. The following query works for me: IQueryable<DAL.TEACHER> teacher = from p in School select p.PERSON as ESBDAL.TEACHER; How would I write this as a query expression? I thought something like: IQueryable<DAL.TEACHER> teacher = School.Select(x=>x.PERSON) as IQueryable<DAL.TEACHER>; ...but it does not. Am I misunderstanding the .Select()?

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  • Need a mysql query to extract data from mm-forms

    - by Kirill
    http://cl.ly/201a11b430bf60ef9e97 is what the rows look like, after I clean them up a bit: SELECT fk_form_joiner_id,form_key,value FROM wp_contactform_submit_data WHERE form_key!='page_post_id' AND form_key!='captcha-802' AND form_key!='page_post_title' AND form_key!='user_ID' What I need is a query where it would transform this into a structure like: id | First-name | Surname-name | your-email | dob | address-1 | address-2 | county | postcode | phone ------------------------------------------------------------------------------------------------------- 88 | jack | Somethin | [email protected] | dob | (etc) I think I know a way to do this through php, but I think there must be a way to do it as a mysql query. Ultimately, I need to export this (into a csv), but if you could give me a query that would output this into a mysql table (or at least a workable select query, that I could then turn into an insert query loop, to create a table), I'd do it form there. Thank you.

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  • Prevent query string manipulation by adding a hash?

    - by saille
    To protect a web application from query string manipulation, I was considering adding a query string parameter to every url which stores a SHA1 hash of all the other query string parameters & values, then validating against the hash on every request. Does this method provide strong protection against user manipulation of query string values? Are there any other downsides/side-effects to doing this? I am not particularly concerned about the 'ugly' urls for this private web application. Url's will still be 'bookmarkable' as the hash will always be the same for the same query string arguments. This is an ASP.NET application.

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  • adding DATE_SUB to query to return range of values in mysql

    - by ian
    Here is my original query: $query = mysql_query("SELECT s.*, UNIX_TIMESTAMP(`date`) AS `date`, f.userid as favoritehash FROM songs s LEFT JOIN favorites f ON f.favorite = s.id AND f.userid = '$userhash' ORDER BY s.date DESC"); This returns all the songs in my DB and then joins data from my favorites table so I can display wich items a return visitors has clicked as favorites or not. Visitors are recognized by a unique has storred in a cookie and in the favorites table. I need to alter this query so that I can get just the last months worth of songs. Below is my attempt at adding DATE_SUB to my query: $query = mysql_query("SELECT s.*, UNIX_TIMESTAMP(`date`) AS `date`, f.userid as favoritehash FROM songs s WHERE `date` >= DATE_SUB( NOW( ) , INTERVAL 1 MONTH ) LEFT JOIN favorites f ON f.favorite = s.id AND f.userid = '$userhash' ORDER BY s.date DESC"); Suggestions?

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  • NHibernate Named Query Parameter Numbering @p1 @p2 etc

    - by IanT8
    A colleague recently ran into a problem where he was passing in a single date parameter to a named query. In the query, the parameter was being used twice, once in an expression and once in a GROUP BY clause. Much to our surprise, we discovered that NHibernate used two variables and sent the single named parameter in twice, as @p1 and @p2. This behaviour caused SQL to fail the query, with the usual "a column in the select clause is not in the group by clause" (I paraphrase ofcourse). Is this behaviour normal? Can it be changed? Seems to me that if you have a parameter name like :startDate, NHibernate only needs to pass in @p1 no matter how many times you might refer to :startDate in the query. Any comments? The problem was worked around by using another sub-query to overcome the SQL parsing error.

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  • SQL Query - 20mil records - Best practice to return information

    - by eqiz
    I have a SQL database that has the following table: Table: PhoneRecords ID(identity Seed) FirstName LastName PhoneNumber ZipCode Very simple straight forward table. This table has over 20million records. I am looking for the best way to do queries that pull out records based off area codes from the table. For instance here is an example query that I have done. SELECT phonenumber, firstname FROM [PhoneRecords] WHERE (phone LIKE '2012042%') OR (phone LIKE '2012046%') OR (phone LIKE '2012047%') OR (phone LIKE '2012083%') OR (phone LIKE '2012088%') OR (phone LIKE '2012841%') As you can see this is an ugly query, but it would get the job done (if I wasn't running into timeout issues) Can anyone tell me the best way for speed/optimization to do the above query to display the results? Currently that query above takes around 2 hours to complete on a 9gb 1600mhz ram, i7 930 quadcore OC'd 4.01ghz. I obviously have the computer power required to do such a query, but still takes too long for queries.

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  • Access is re-writing - and breaking - my query!

    - by FrustratedWithFormsDesigner
    I have a query in MS Access (2003) that makes use of a subquery. The subquery part looks like this: ...FROM (SELECT id, dt, details FROM all_recs WHERE def_cd="ABC-00123") AS q1,... And when I switch to Table View to verify the results, all is OK. Then, I wanted the result of this query to be printed on the page header for a report (the query returns a single row that is page-header stuff). I get an error because the query is suddenly re-written as: ...FROM [SELECT id, dt, details FROM all_recs WHERE def_cd="ABC-00123"; ] AS q1,... So it's Ok that the round brackets are automatically replaced by square brackets, Access feels it needs to do that, fine! But why is it adding the ; into the subquery, which causes it to fail? I suppose I could just create new query objects for these subqueries, but it seems a little silly that I should have to do that.

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  • Selecting a value from multiple dictionaries inside an enumeration

    - by johaanfaust
    If I have an enumeration of dictionaries IEnumerable<IDictionary<string, float>> enumeration can I perform a Linq query on it so that I can select by a value from each dictionary in the enumeration using the same key? I can do this in a loop: float f; foreach (var dictionary in enumeration) { if (dictionary.TryGetValue("some key", out f)) { Console.WriteLine(f); } } (The eventual plan is to compare the performance of the query verses the equivalent nested looping statements (the enumeration itself is formed from either another query or an equivalent set of loops).)

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  • Timeout Expire on INSERT Query

    - by Sachin Gaur
    I am trying to insert a row in a table using simple INSERT Query in a transaction. It works fine in SQL Server but I am not able to insert the data using my business object. I am calling a SELECT query using the Command as: Using cm As New SqlCommand With cm .Connection = tr.Connection .Transaction = tr .CommandType = CommandType.Text .CommandText = Some Select Query .ExecuteScalar() '' Do something .CommandText = Insert Query .ExecuteNonQuery() End With End Using I am getting the Timeout period expired error at ".ExecuteNonQuery()" line. Any other DML query is running perfectly fine at this point. Can anyone tell me the reason?

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  • if specific row = null, execute query

    - by fusion
    how do i check if the value of a column is null, and only then execute the query? for example: col1 col2 col3 01 abc i run a query which first checks if the record exists or not; if it exists, it should execute the update query and if it doesn't exist, it executes the insert query. how do i check if col3 is null and if it is null, it should execute the update query. . $sql = "SELECT uid FROM `users` WHERE uid = '" . $user_id . "'"; $result = mysql_query($sql,$conn) or die('Error:' .mysql_error()); $totalrows = mysql_num_rows($result); if($totalrows < 1) { insertUser($user_id,$sk, $conn); } else { updateSessionKey($user_id,$sk,$conn); }

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  • Passing report values to a query

    - by Beavis
    I'm a novice with Microsoft Access as my background is mostly .NET. I'm sure what I'm trying to accomplish is dead simple but I need some direction. I have a report and a query. The query returns a single numeric value based on a single numeric criteria. Select total from table where id = [topic] I have placed a text box on my report so I can feed the id to this query and in return get the total. It seems like DLookUp is what I want but no matter how I construct it, I get an "#Error" in the text box when I run the report. Currently my DLookUp looks like this (I just hard-coded now for simplicity): =DLookUp("[total]","myquery","[topic] = 3") How can I pass a value from a field on my report to a query so I can return the query's single numeric value? Thanks.

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  • Entity Framework with SQL Server 2000 (APPLY Operator) issue

    - by How Lun
    Hello, I have a simple Linq query below: var seq = (from n in GetObjects() select n.SomeKey) .Distinct() .Count(); This query works find with SQL Server 2005 and above. But, this start to give headache when I hooked the EF to SQL Server 2000. Because EF is using APPLY operator which only SQL Server 2005 and above can be supported. I do not know why the hell EF is using APPLy operator instead of sub queries. My current work around is: var seq = (from n in GetObjects() select n.SomeKey) .Distinct() .ToList() .Count(); But, I can forsee more problems to come. The above query is just a simple one. Did anyone come across such issue? And how you guys work around it? Or is there a way to force EF not to use APPLY operator? Any help will be very much appreciated. How Lun.

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  • iqueryable select/where not working

    - by Steve
    I have two tables Boxer and Prospect. Boxers has general stuff like name and and dob etc and a BoxerId While Prospect contains only one value (at the moment) which is a boxerId. If a boxer is a prospect(up and coming boxer) there Id will be in the prospect table. This works fine but now I want to select all boxers that are prospects public static IQueryable<Boxer> IsProspect(this IQueryable<Boxer> query) { //this does not filter down to only prospects!!! return query.Where(x => x.Prospect != null); } This is the function I call using: var repository = GetRepository<Boxer>(); var boxers = repository.Query().IsProspect(); I would hope this would filter my collection of all boxers down to just boxers that are prospects! Oddly it doesnt filter it but if i hover over my boxers object and look at each boxer during debugging I can see "IsProspect" true or false correctly

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