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• T-SQL: from rows to columns but not an actual pivot

  - by Matte

  Is there a T-SQL (SQL Server 2008R2) query to transform TABLE_1 into the expected resultset? TABLE_1 +----------+-------------------------+---------+------+ | IdDevice | Timestamp | M300 | M400 | +----------+-------------------------+---------+------+ | 3 | 2012-12-05 16:29:51.000 | 2357,69 | 520 | | 6 | 2012-12-05 16:29:51.000 | 1694,81 | 470 | | 1 | 2012-12-05 16:29:51.000 | 2046,33 | 111 | +----------+-------------------------+---------+------+ Expected resultset +-------------------------+---------+--------+---------+--------+---------+--------+ | Timestamp | 3_M300 | 3_M400 | 6_M300 | 6_M400 | 6_M300 | 6_M400 | +-------------------------+---------+--------+---------+--------+---------+--------+ | 2012-12-05 16:29:51.000 | 2357,69 | 520 | 1694,81 | 470 | 2046,33 | 111 | +-------------------------+---------+--------+---------+--------+---------+--------+

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• Question regarding MySQL indices and their functionality

  - by user281434

  Hi Say I have an ordinary table in my db like so ---------------------------- | id | username | password | ---------------------------- | 24 | blah | blah | ---------------------------- A primary key is assigned to the id column. Now when I run a Mysql query like this: SELECT id FROM table WHERE username = 'blah' LIMIT 1 Does that primary key index even help? If I am telling it to match usernames, then shouldn't the username column be indexed instead? Thanks for your time

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• Can I chain database links in Oracle?

  - by RenderIn

  I have 3 databases. 1 links to 2, 2 links to 3. I'd like to query tables in 3, from 1. I tried third_db_tab@3@2 and it did not work. Wondering if this is possible and if so, what the syntax is.

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• .Net Remote Log Querying

  - by jlafay

  I have a Win Service that I'm working on that consists of the service, WF Service (using WorkflowServiceHost), a Workflow (WorkflowApplication) that queries/processes data from a SQL Server DB, and a Comm Marshall class that handles data flow between the service and the WF. The WF does a lot of heavy data processing and the original app (early VB6) logged all the processing and displayed the results on the screen of the host machine. Critical events will be committed to eventlog because I strongly believe that should be common practice because admins naturally will look there and because it already has support for remote viewing. The workflow will also need to write logging events as it processes and iterates according to our business logic. Such as: records queried, records returned, processed records, etc. The data is very critical and we need to log actions as they occur. The logs are currently kept as text files on disk and I think that is ok. Ideally I would like to record log events in XML so it's easier to query and because it is less costly than a DB, especially since our DB servers do a lot of heavy processing anyways. Since we are replacing essentially a VB6 application with a robust windows service (taking advantage of WF 4.0), it has been requested that a remote client also be created. It receives callbacks from the service after subscribing to it and being added to a collection of subscribers. Basic statistics and summaries are updated client side after receiving basic monitoring data of what is going on with the service. We would like to also provide a way to provide details when we need to examine what is going on further because this is a long running data processing service and issues need to be addressed immediately. What is the best way to implement some type of query from the client that is sent to the service and returned to the client? Would it be efficient to implement another method to expose on the service and then have that pass that off to some querying class/object to examine the XML files by whichever specification and then return it to the client? That's the main concern. I don't want the service to processing to bottleneck much while this occurs. It seems that WF already auto-magically threads well for the most part but I want to make sure this is the right way to go about it. Any suggestions/recommendations on how to architect and implement a small log querying framework for a remote service would be awesome.

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• Smart way to search an array of arrays

  - by iFloh

  I have an array of arrays with objects and now want to get all objects for a certain date (which is an object property). what's the best way to query it?

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• SQL: Recursive Path

  - by Chris

  Is it possible to create a "tree resolver" in SQL? I have a table: ID Name Parent 1 a 2 b 1 3 c 1 4 d 3 Now I want a SQL query that returns: ID PATH 1 /a 2 /a/b 3 /a/c 4 /a/c/d Is this possible with SQL? It would make many things easier for me. Any help would really be appreciated!

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• Display sql results in groups

  - by ktsixit

  Hi all, I have an sql query here and it returns a number of results. I'd like to show these results in groups. What I mean is, show the first 20 results in some part of the page, show the next 20 results in another part of the page etc... How can I do that?

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• Visual Basic 6 ADO Update question...

  - by Dave

  Hi, I've been working with a Legacy application which interacts with a database through ADODB, and most of the changes to records follow a fairly straightforward pattern of: Create a Recordset from a query Make various change to the recordset call .Update on the recordset. What I'm wondering is, with ADODB recordsets, is there anyway to extract the 'changes'. The logic which changes the recordset is scattered about, and all I need is the changes, not how it was changed... Any suggestions for tracking changes in a recordset (in code, a trigger on the DB or similar is no use here) Thanks in advance

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• SQL Count in View as column

  - by alex

  I'm trying to get the result of a COUNT as a column in my view. Please see the below query for a demo of the kind of thing I want (this is just for demo purposes) SELECT ProductID, Name, Description, Price, (SELECT COUNT(*) FROM ord WHERE ord.ProductID = prod.ProductID) AS TotalNumberOfOrders FROM tblProducts prod LEFT JOIN tblOrders ord ON prod.ProductID = ord.ProductID This obviously isn't working... but I was wondering what the correct way of doing this would be?

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• How to remove a certain row from DataTable ?

  - by eugeneK

  How do i achieve simple sql query like delete from Users where userCity='Munich' with DataTables ? p.s. without using Linq or something like that simply because i do not use it though project.

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• Sending @reply in curl

  - by willwill

  I'm writing an identi.ca client, and seems that @reply isn't working. After investigation I found that @ prefix is used by curl to indicate file upload, and escaping with \@reply doesn't work; curl doesn't remove the \ at the front. I also can't format the postfields to query string, as I need to send files on that request too. Is there any method to send both @reply and file upload in the same request?

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• selecting when an aggregate column has two or more items

  - by blockhead

  Let's say I had a query like this: SELECT * FROM ( SELECT 'a' AS a, '1' AS b UNION SELECT 'a' AS a, '2' AS b UNION SELECT 'b' AS a, '1' AS b) AS a GROUP BY a.a In this case "a".b is an aggregate of 1,2 while "b".b is only an aggregate of 1. How can I select only "a"?

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• When to use which search technique in sharepoint developement? means...read once...

  - by Lalit

  When I have to use KyewordSearchQuery, When to use FullTextSearchQuery, When to Use Query in development of search webpart in visual studio for the sharepoint site?

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• MySQL: how to keep top 1000 rows for each value of a column

  - by Patrick

  hi, I need some help with this query: I want to delete the following rows from my table. The table has 4 columns: UserID, UserName, Tag, Score. I want to keep only the top 1000 users with highest score, for each Tag. So I need to order by score, and to keep the first 1000 users for each tag. Thanks

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• How to retrive the value passed in post method

  - by praveenjayapal

  Hi friends, i would like to retrive the value from post method.. I know its possible to retrive the get method value - from query string.. So how possible it for post method ? Thanks, Praveen jayapal

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• Parse multiple filters in SQL

  - by Jeff Meatball Yang

  I have a problem parsing a stored procedure parameter in the form: declare @S varchar(100) set @S = '4=2,24=1534' Here's the query: select cast(idx as varchar(100)) 'idx' , value , SUBSTRING(value, 1, charindex(value, '=')+1) 'first' , SUBSTRING(value, charindex(value, '=')+1, LEN(value)-charindex(value, '=')-1) 'second' from Common.SplitToTable(@S, ',') -- returns (idx int, value varchar(max)) where len(value) > 0 But here is the result I get: idx value first second 0 4=2 4 4= 1 24=1534 2 24=153 Here's what I expected: idx value first second 0 4=2 4 2 1 24=1534 2 1534 Help?

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• How to validate Login Details using Google apps API ?

  - by Pari

  Hi, I am using below code to to create Contact Service and to Validate login Details: ContactsService obj_ContactService = new ContactsService(""); obj_ContactService.setUserCredentials(userEmail, password); But even if user enters invalid detail above code does not throw any exception. User get verified only when i call "Insert" query after adding whole contact details. But in my application i want to notify user immediately after user enters login details. Thanx

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• mysqli_stmt_bind_param SQL Injection

  - by profitphp

  Is there still an injection risk when using prepared statements and mysqli_stmt_bind_param? For example: $malicious_input = 'bob"; drop table users'; mysqli_stmt_bind_param($stmt, 's', $malicious_input); Behind the scenes does mysqli_stmt_bind_param pass this query string to mysql: SET @username = "bob"; drop table users"; Or does it perform the SET command through the API, or use some type of protection to keep this from happening?

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• How can I make MySQL multiple search words and multiple fields to search correctely

  - by newbie

  If user inserts search query "john doe new york", then search should find all those words form searched fields, if not all fields are not found, then that row shouldn't be selected at all, only rows that contain all those words should be included in search. How can I do that in MySQL?

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• users in a domain with NO login scripts.

  - by robd

  I'm trying to write an LDAP query for find all users in a domain with NO login scripts. The following works for users with a login script = db.bat: (&(objectCategory=user)(ScriptPath=DA.BAT)) However, what i thought will be the obvious logic for a Null ScriptPath field returns no values: (&(objectCategory=user)(ScriptPath="")) I'll appreciate any assistance. Robd

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• cakePHP and GROUP BY

  - by Lizard

  I am trying to solve a hopefully simple problem here is the query I am trying produce: SELECT `categories`.*, COUNT(`entities`.id) FROM `categories` LEFT JOIN `entities` ON (`categories`.`id` = `entities`.`category_id`) GROUP BY `categories`.`id` I am really struggling to do this is in cakePHP 1.2 How would/should I go about doing this... (I am using 'Containable' if that helps) Thanks in advance

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• How to bind DataGrid to display only 25 records of a table having more than 1000 records ..??

  - by Devashri

  I have a datagrid control which is bound to a table which containing more than 1000 records. And i want to show only 25 records once a time. I have used paging in datagrid. But each time the next page index is set, query is fired again. This takes lots of time. So what is the easiest way to bound data in this case to improve performance..??

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• How to get all the descendants of a given instance of a model in google app engine?

  - by M.A. Cape

  Using parent child relationship where a parent can have children while each child has only one parent, does using Children.all().ancestor(parent.key) a good solution where a child is constructed by setting parent=parent.key in the constructor? Is the 1000 limit applies with this kind of query?

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• MySQL: Is it possible to compute MAX( AVG (field) )?

  - by Brad

  My current query reads: SELECT entry_id, user_id, cat_id, AVG( rating ) as avg_rate FROM entry_rate WHERE 1 GROUP BY entry_id cat_id relates to different categories: 1, 2, 3 or 4 Is there a way I can find the maximum average for each user in each category without setting up an additional table? The return could potentially be 4 maximum avg_rate for each user_id Visit the link below for example: http://lh5.ggpht.com/_rvDQuhTddnc/S8Os_77qR9I/AAAAAAAAA2M/IPmzNeYjfCA/s800/table1.jpg

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• I need to insert multiple rows at once in sql server ..based on an iterative value

  - by sajad

  Hi friends, I want to insert 3 rows at a time in a table based on select statement.. consider the query insert into tblTemp ( a,b ) select a, b from tblTemp2 This lets me insert one row in tblTemp.. my requirement is to add 3 rows with iterative values a,a+1,a+2 for each b inserted.

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