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  • sql - datetime variable versus string representation of datetime variable

    - by BhejaFry
    Hi folks, I have a query that takes too long to respond when the search parameter happens to be a varchar datatype with date. However, if i convert varchar to datetime variable, the query runs fine. For ex: This takes too long. select count(id) from names where updateddate '1/5/2010' This runs fine. declare @dateparam datetime set @dateparam = convert(datetime, '1/5/2010',102) select count(id) from names where updateddate @dateparam What's the reason one runs fine but the other doesn't? TIA

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  • SQL Rounding Problems in 2005 and 2000

    - by azamsharp
    I have a value in the database which is 2.700000002. When I run a query in Management studio in SQL SERVER 2005 I get 2.7. But when I run in SQL SERVER 2000 query analyzer it comes 2.700000002. 2.70000002 is correct why is SQL SERVER 2005 trying to change the value by rounding it or selecting the floor value?

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  • unable to make out use of BETWEEN in oracle

    - by Ankit Sachan
    I am not able to make this out: Between eliminates use of = and <= ...but when i tried this query: SELECT * FROM names WHERE name >= 'Ankit' AND name <= 'P' ...it gives output: name ------ Ankit Mac Bob When I tried: SELECT * FROM names WHERE name BETWEEN 'Ankit' AND 'P' ...it gives output: name ------ Ankit Can you explain this why?

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  • Appending data to Datatable

    - by Sathish
    I am adding data to a dataset using the below code cmdExcel.CommandText = "SELECT * FROM Table11" dr = cmdExcel.ExecuteReader(); DataTable dtExcel = new DataTable("WK11"); dtExcel.Load(dr); ds.Tables.Add(dtExcel); Now i want to add the content from Table2 to the same datatable WK11. Is it possible? cmdExcel.CommandText = "SELECT * FROM Table12" dr = cmdExcel.ExecuteReader(); dtExcel.Append(.....

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  • Nhibernate - How to get rid of unwanted text cast

    - by Nicolas Cornu
    Hello, I am using Nhibernate 2 and PostgreSql The above code generate a query with a cast on expression res = _session.CreateCriteria(typeof(C)) .Add(Restrictions.Eq("Exp", Exp)) .AddOrder(new Order("Fr", false)) .SetMaxResults(MW) .List<C>(); Exp is a character varying(30) In the query: SELECT ... FROM table WHERE Exp = 'text':: text ... I want to get rid of cast 'text":: text beacause the index is not used. Nicolas

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  • FQL: Facebook application php

    - by user341879
    Hello I have implemented the following $fql = "SELECT uid2 FROM friend WHERE uid1=" . $uid; $param = array( 'method' = 'fql.query', 'query' = $fql, 'callback' = '' ); $fqlResult = $facebook-api($param); Now I need to fetch elements from $ fqlResult. How should I do this??

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  • Creating notes on facebook through FBConnect in iPhone application

    - by Vin
    Hi All, I have tried FBConnect for iPhone and am able to create/manage sessions and upload pictures successfully. What I can't sort out is, how to create and edit notes. The Facebook documentation says that notes.create query takes three arguments:title, content and uid. It seems I am unable to form the right request for the required query. Please help me on this. Thanks in advance.

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  • Generic function that accept a table and column name and returns all the primary key values that mat

    - by nashr rafeeg
    i have functions that look like this that is littered through out the code def get_M_status(S): M_id = merital.select(merital.c.marital_status_description == S).execute().fetchone() if M_id == None: print "Warning: No Marital id found for %s Merital status to Single" % S M_id = merital.select(merital.c.marital_status_description == "Single").execute().fetchone() return M_id[0] i was wondering if their is a way to write a generic function where i can pass the relevant values ie: table name primary key column filter column and filter value cheers

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  • NHibernate and mysql timestamp

    - by HeavyWave
    I am trying to do versioning with NHibernate and everything works fine, however right after the insert NHibernate tries to pull the generated timestamp by executing the following query: SELECT profileloc_.Updated as Updated14_ FROM profile_locale profileloc_ WHERE profileloc_.id=?p0 and profileloc_.culture=?p1;?p0 = 16, ?p1 = 1033 Which is totally wrong, as it will pull out all versions starting with the first one. How do I make it add ORDER BY Updated DESC to this query? I am using Fluent NHibernate for mappings.

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  • Using preg_replace in mysql

    - by Roshan
    I have a CMS content in database. The content contains '<img src= .............../>' also. I want to retrieve this content using mysql query and show on frontend but with all '<img src='.........../>' removed from the content. How can it be done using query in mysql?

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  • Why does this pdo::mysql code crash on windows??

    - by user154107
    Why does this pdo::mysql code crash on windows??? <?php $username = "root"; $password = ""; try { $dsn = "mysql:host=localhost;dbname=employees"; $dbh = new PDO($dsn, $username, $password); $dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, FALSE); $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); echo "Connected to database<br />" ; $dbh->exec("DROP TABLE IF EXISTS vCard;"); $dbh->exec("DROP TABLE IF EXISTS emp;"); $table = "CREATE TABLE vCard( id INT(4) NOT NULL PRIMARY KEY, firstName VARCHAR (255), lastName VARCHAR (255), office VARCHAR (255), homePh VARCHAR (13), mobilePh VARCHAR (13))"; $dbh->exec($table); $dbh->beginTransaction(); $dbh->exec("INSERT INTO vCard(id, firstName, lastName, office, homePh, mobilePh) VALUES (4834, 'Randy', 'Lewis', 'SR. Front End Developer', '631-842-3375', '917-435-2245');"); $dbh->exec("INSERT INTO vCard(id, firstName, lastName, office, homePh, mobilePh) VALUES (0766, 'Frank', 'LaGuy', 'Graphic Designer', '631-789-8244', '917-324-9897');"); $dbh->exec("INSERT INTO vCard(id, firstName, lastName, office, homePh, mobilePh) VALUES (6684, 'Donnie', 'Dolemite', 'COO', '631-789-9482', '917-234-1222');"); $dbh->exec("INSERT INTO vCard(id, firstName, lastName, office, homePh, mobilePh) VALUES (8569, '', 'McLovin', 'Actor', '631-842-9786', '917-987-8944');"); $dbh->commit(); echo "Data entered successfully<br/><br/>"; $sql = "SELECT * FROM vCard"; // WHERE firstName = 'Donnie'"; $results = $dbh->query($sql); foreach ($results as $id){ echo "SSN: ". $id['id']." "; echo "First Name: ". $id['firstName']." "; echo "Last Name: ". $id['lastName']."<br/>"; } } catch (PDOException $e) { echo "Failed: " . $e->getMessage(); $dbh->rollback(); } ?> basically this line of code is what triggers Apache to crash.. $sql = "SELECT * FROM vCard"; If I try to select one value like 'id' it'll ... when I try to select more than one value "*" it crashes??????

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  • Updating Checked Checkboxes using CodeIgniter + MySQL

    - by Tim
    Hello I have about 8 check boxes that are being generated dynamically from my database. This is the code in my controller //Start Get Processes Query $this->db->select('*'); $this->db->from('projects_processes'); $this->db->where('process_enabled', '1'); $data['getprocesses'] = $this->db->get(); //End Get Processes Query //Start Get Checked Processes Query $this->db->select('*'); $this->db->from('projects_processes_reg'); $this->db->where('project_id', $project_id); $data['getchecked'] = $this->db->get(); //End Get Processes Query This is the code in my view. <?php if($getprocesses->result_array()) { ?> <?php foreach($getprocesses->result_array() as $getprocessrow): ?> <tr> <td><input <?php if($getchecked->result_array()) { foreach($getchecked->result_array() as $getcheckedrow): if($getprocessrow['process_id'] == $getcheckedrow['process_id']) { echo 'checked'; } endforeach; }?> type="checkbox" name="progresscheck[]" value="<?php echo $getprocessrow['process_id']; ?>"><?php echo $getprocessrow['process_name']; ?><br> </td> </tr> <?php endforeach; ?> This generates the checkboxes into the form and also checks the appropriate ones as specified by the database. The problem is updating them. What I have been doing so far is simply deleting all checkbox entries for the project and then re-inserting all the values into the database. This is bad because 1. It's slow and horrible. 2. I lose all my meta data of when the check boxes were checked. So I guess my question is, how do I update only the checkboxes that have been changed? Thanks, Tim

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  • INSTEAD OF triggers do not support direct recursion

    - by senzacionale
    ALTER TRIGGER [dbo].[TRG_DeleteUser] ON [dbo].[Users] INSTEAD OF DELETE AS BEGIN SET NOCOUNT ON DECLARE @AspNetUserGuid UniqueIdentifier DECLARE @UserId NVARCHAR(36) BEGIN SET @AspNetUserGuid = (SELECT AspNetUserGuid FROM deleted) SET @UserId = (SELECT UserId FROM dbo.Users WHERE AspNetUserGuid = @AspNetUserGuid) IF @AspNetUserGuid IS NOT NULL AND @UserId IS NOT NULL BEGIN EXECUTE [dbo].UsersDelete @AspNetUserGuid, @UserId END END SET NOCOUNT OFF END problem is here: EXECUTE [dbo].UsersDelete @AspNetUserGuid, @UserId i need to call triger before row is actually deleted-

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  • Performing dynamic sorts on EF4 data

    - by Jaxidian
    I'm attempting to perform dynamic sorting of data that I'm putting into grids into our MVC UI. Since MVC is abstracted from everything else via WCF, I've created a couple utility classes and extensions to help with this. The two most important things (slightly simplified) are as follows: public static IQueryable<T> ApplySortOptions<T, TModel, TProperty>(this IQueryable<T> collection, IEnumerable<ISortOption<TModel, TProperty>> sortOptions) where TModel : class { var sortedSortOptions = (from o in sortOptions orderby o.Priority ascending select o).ToList(); var results = collection; foreach (var option in sortedSortOptions) { var currentOption = option; var propertyName = currentOption.Property.MemberWithoutInstance(); var isAscending = currentOption.IsAscending; if (isAscending) { results = from r in results orderby propertyName ascending select r; } else { results = from r in results orderby propertyName descending select r; } } return results; } public interface ISortOption<TModel, TProperty> where TModel : class { Expression<Func<TModel, TProperty>> Property { get; set; } bool IsAscending { get; set; } int Priority { get; set; } } I've not given you the implementation for MemberWithoutInstance() but just trust me in that it returns the name of the property as a string. :-) Following is an example of how I would consume this (using a non-interesting, basic implementation of ISortOption<TModel, TProperty>): var query = from b in CurrentContext.Businesses select b; var sortOptions = new List<ISortOption<Business, object>> { new SortOption<Business, object> { Property = (x => x.Name), IsAscending = true, Priority = 0 } }; var results = query.ApplySortOptions(sortOptions); As I discovered with this question, the problem is specific to my orderby propertyName ascending and orderby propertyName descending lines (everything else works great as far as I can tell). How can I do this in a dynamic/generic way that works properly?

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  • SQL Logic Operator Precedence: And and Or

    - by nc
    Are the two statements below equivalent? SELECT [...] FROM [...] WHERE some_col in (1,2,3,4,5) AND some_other_expr and SELECT [...] FROM [...] WHERE some_col in (1,2,3) or some_col in (4,5) AND some_other_expr Is there some sort of truth table I could use to verify this? Thanks.

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  • SQL: Daily Average of Logins Per Hour

    - by jerrygarciuh
    This query is producing counts of logins per hour: SELECT DATEADD(hour, DATEDIFF(hour, 0, EVENT_DATETIME), 0), COUNT(*) FROM EVENTS_ALL_RPT_V1 WHERE EVENT_NAME = 'Login' AND EVENT_DATETIME >= CONVERT(DATETIME, '2010-03-17 00:00:00', 120) AND EVENT_DATETIME <= CONVERT(DATETIME, '2010-03-24 00:00:00', 120) GROUP BY DATEADD(hour, DATEDIFF(hour, 0, EVENT_DATETIME), 0) ORDER BY DATEADD(hour, DATEDIFF(hour, 0, EVENT_DATETIME), 0) ...with lots of results like this: Datetime COUNT(*) ---------------------------------- 2010-03-17 12:00:00.000 135 2010-03-17 13:00:00.000 129 2010-03-17 14:00:00.000 147 What I need to figure out is how to query the average logins per hour for a given day. Any help?

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  • Win32 API P-Invoke to bring a disk online, offline, and set unique ID

    - by Andy Schneider
    I am currently using Diskpart to accomplish these functions, but i would like to be able to use P-Invoke and not have to shell out to an external process in my C# app. The example Diskpart scripts are: //Online a disk Select disk 7 disk online // Reset GPT Identifier select disk 7 UNIQUEID DISK ID=baf784e7-6bbd-4cfb-aaac-e86c96e166ee I tried searching pinvoke.net but could only find functions that dealt with volumes, not disks. Any idea on how to accomplish these diskpart commands using Pinvoke?

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  • XSLT Document function returns empty result on Maven POM

    - by user328618
    Greetings! I want to extract some properties from different Maven POMs in a XSLT via the document function. The script itself works fine but the document function returns an empty result for the POM as long as I have the xmlns="http://maven.apache.org/POM/4.0.0" in the project tag. If I remove it, everything works fine. Any idea how the make this work while leaving the xmlns attribute where it belongs or why this doesn't work with the attribute in place? Here comes the relevant portion of my XSLT: <xsl:template match="abcs"> <xsl:variable name="artifactCoordinate" select="abc"/> <xsl:choose> <xsl:when test="document(concat($artifactCoordinate,'-pom.xml'))"> <abc> <ID><xsl:value-of select="$artifactCoordinate"/></ID> <xsl:copy-of select="document(concat($artifactCoordinate,'-pom.xml'))/project/properties"/> </abc> </xsl:when> <xsl:otherwise> <xsl:message terminate="yes"> Transformation failed: POM "<xsl:value-of select="concat($artifactCoordinate,'-pom.xml')"/>" doesn't exist. </xsl:message> </xsl:otherwise> </xsl:choose> And, for completeness, a POM extract with the "bad" attribute: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <!-- ... --> <properties> <proalpha.version>[5.2a]</proalpha.version> <proalpha.openedge.version>[10.1B]</proalpha.openedge.version> <proalpha.optimierer.version>[1.1]</proalpha.optimierer.version> <proalpha.sonic.version>[7.6.1]</proalpha.sonic.version> </properties> </project>

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  • TYPO3: Use TCA.php to build Frontend Forms?

    - by hunte
    Hi! I'm searching for a solution, to build a frontend form from the TCA.php of my TYPO3 extension. Is there any way, to select TCA.php values, from my extension Class? I want to build a select-element with values of the TCA.php file. Would be amazing, if someone could give me some advice :)

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  • SQL Joins on varchar fields timing out

    - by CL4NCY
    Hi, I have a join which deletes rows that match another table but the joining fields have to be a large varchar (250 chars). I know this isn't ideal but I can't think of a better way. Here's my query: DELETE P FROM dbo.FeedPhotos AS P INNER JOIN dbo.ListingPhotos AS P1 ON P.photo = P1.feedImage INNER JOIN dbo.Listings AS L ON P.accountID = L.accountID WHERE P.feedID = @feedID This query is constantly timing out even though there are less than 1000 rows in the ListingPhotos table. Any help would be appreciated.

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  • mysql index optimization for a table with multiple indexes that index some of the same columns

    - by Sean
    I have a table that stores some basic data about visitor sessions on third party web sites. This is its structure: id, site_id, unixtime, unixtime_last, ip_address, uid There are four indexes: id, site_id/unixtime, site_id/ip_address, and site_id/uid There are many different types of ways that we query this table, and all of them are specific to the site_id. The index with unixtime is used to display the list of visitors for a given date or time range. The other two are used to find all visits from an IP address or a "uid" (a unique cookie value created for each visitor), as well as determining if this is a new visitor or a returning visitor. Obviously storing site_id inside 3 indexes is inefficient for both write speed and storage, but I see no way around it, since I need to be able to quickly query this data for a given specific site_id. Any ideas on making this more efficient? I don't really understand B-trees besides some very basic stuff, but it's more efficient to have the left-most column of an index be the one with the least variance - correct? Because I considered having the site_id being the second column of the index for both ip_address and uid but I think that would make the index less efficient since the IP and UID are going to vary more than the site ID will, because we only have about 8000 unique sites per database server, but millions of unique visitors across all ~8000 sites on a daily basis. I've also considered removing site_id from the IP and UID indexes completely, since the chances of the same visitor going to multiple sites that share the same database server are quite small, but in cases where this does happen, I fear it could be quite slow to determine if this is a new visitor to this site_id or not. The query would be something like: select id from sessions where uid = 'value' and site_id = 123 limit 1 ... so if this visitor had visited this site before, it would only need to find one row with this site_id before it stopped. This wouldn't be super fast necessarily, but acceptably fast. But say we have a site that gets 500,000 visitors a day, and a particular visitor loves this site and goes there 10 times a day. Now they happen to hit another site on the same database server for the first time. The above query could take quite a long time to search through all of the potentially thousands of rows for this UID, scattered all over the disk, since it wouldn't be finding one for this site ID. Any insight on making this as efficient as possible would be appreciated :) Update - this is a MyISAM table with MySQL 5.0. My concerns are both with performance as well as storage space. This table is both read and write heavy. If I had to choose between performance and storage, my biggest concern is performance - but both are important. We use memcached heavily in all areas of our service, but that's not an excuse to not care about the database design. I want the database to be as efficient as possible.

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  • Retrieving specific fixtures in Rails

    - by Bilal Aslam
    I have a YML file containing fixtures for a Rails model (Comment) which looks like this (pardon the formatting): comment_a: id: 1 text: 'foo' visible: false comment_b: id: 2 text: 'bar' visible: true comment_c: id: 3 text: 'baz' visible: true I know that I can select an individual Comment fixture like so: comments(:comment_a) In one of my acceptance tests, I want to find all the Comments which have visible = true. How do I select a set of Comments that meet certain criteria so I can iterate over them afterwards?

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  • Entity Framework in n-layered application - Lazy loading vs. Eager loading patterns

    - by Marconline
    Hi all. This questions doesn't let me sleep as it's since one year I'm trying to find a solution but... still nothing happened in my mind. Probably you can help me, because I think this is a very common issue. I've a n-layered application: presentation layer, business logic layer, model layer. Suppose for simplicity that my application contains, in the presentation layer, a form that allows a user to search for a customer. Now the user fills the filters through the UI and clicks a button. Something happens and the request arrives to presentation layer to a method like CustomerSearch(CustomerFilter myFilter). This business logic layer now keeps it simple: creates a query on the model and gets back results. Now the question: how do you face the problem of loading data? I mean business logic layer doesn't know that that particular method will be invoked just by that form. So I think that it doesn't know if the requesting form needs just the Customer objects back or the Customer objects with the linked Order entities. I try to explain better: our form just wants to list Customers searching by surname. It has nothing to do with orders. So the business logic query will be something like: (from c in ctx.CustomerSet where c.Name.Contains(strQry) select c).ToList(); now this is working correctly. Two days later your boss asks you to add a form that let you search for customers like the other and you need to show the total count of orders created by each customer. Now I'd like to reuse that query and add the piece of logic that attach (includes) orders and gets back that. How would you front this request? Here is the best (I think) idea I had since now. I'd like to hear from you: my CustomerSearch method in BLL doesn't create the query directly but passes through private extension methods that compose the ObjectQuery like: private ObjectQuery<Customer> SearchCustomers(this ObjectQuery<Customer> qry, CustomerFilter myFilter) and private ObjectQuery<Customer> IncludeOrders(this ObjectQuery<Customer> qry) but this doesn't convince me as it seems too complex. Thanks, Marco

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  • loop through HashMap Java jsp

    - by blub
    Hello, the related Questions couldn't help me very much. How can i loop through a HashMap in jsp like this example: <% HashMap<String, String> countries = MainUtils.getCountries(l); %> <select name="ccountry" id="ccountry" > <% //HERE I NEED THE LOOP %> </select>*<br/>

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