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• Get top rated item using AVG mysql

  - by user1876234

  I want to find top rated item using AVG function in mysql, right now my query looks like this: SELECT a.title, AVG(d.rating) as rating FROM in8ku_content a JOIN in8ku_content_ratings d ON a.id = d.article_id ORDER BY rating DESC Problem is that it takes AVG of all items and the result is not accurate, what should be changed here to get correct result ? Tables: in8ku_content [id, title] in8ku_content_ratings [id, article_id, rating]

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• select records from table in the order in which i inserted

  - by echo

  consider a tale is as follows, EmployeeId | Name | Phone_Number Now, i insert 10 records... When i query them back, select * from myTable they are not selected in the order i inserted. I can obviously keep an autoincrement index and ORDER BY index. But i dont want to alter the table. How can i do this without altering the table?

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• Hibernate (JPA) Entity with Static collection as a member

  - by Kyle Partridge

  Is it possible to have a static collection as a member of a hibernate entity? Say I have an object Question: public class Question { private String category; ... } Would it be possible to populate a static Set<String> that is a distinct set of all categories in the Database? I know I could just query this, but I was wondering if there was a more elegant solution, as it seems like something that other people may have come across.

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• Copying an entire table with Postgres

  - by NudeCanalTroll

  Hello, I'm trying to copy the contents of one table into another in Postgres, however it appears some rows aren't being copied correctly: ActiveRecord::StatementInvalid: PGError: ERROR: column "email_date" is of type timestamp without time zone but expression is of type character varying HINT: You will need to rewrite or cast the expression. Is there any way I can have it automatically skip (or ignore) invalid rows? Here's the query I'm using: SET statement_timeout = 0; INSERT INTO emails3 SELECT * FROM emails

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• Resultset To List

  - by Gnaniyar Zubair

  I want to convert my Resultset to List in my JSP page. and want to display all the values. This is my query: SELECT userId, userName FROM user; I have executed that using preparedstatement and got the Resultset. But how to convert it as a List and want to display the result like this: userID userName ------------------ 1001 user-X 1006 user-Y 1007 user-Z

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• R equivalent of SELECT DISTINCT on two or more fields/variables

  - by wahalulu

  Say I have a dataframe df with two or more columns, is there an easy way to use unique() or other R function to create a subset of unique combinations of two or more columns? I know I can use sqldf() and write an easy "SELECT DISTINCT var1, var2, ... varN" query, but I am looking for an R way of doing this. It occurred to me to try ftable coerced to a dataframe and use the field names, but I also get the cross tabulations of combinations that don't exist in the dataset: uniques <- as.data.frame(ftable(df$var1, df$var2))

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• "Ambiguous column name" error on one particular server

  - by jazbit

  This simple query throws the "Ambiguous column name TaskID" error on one db-server only. This is ridiculous. We tested this with the same database structure on different servers and different versions of ms sql (2005/2008), and it's only THIS particular client's server that throws the error. I'm actually frustrated. SELECT Tasks.TaskID FROM Tasks INNER JOIN TaskHelpers ON TaskHelpers.TaskID = Tasks.TaskID order by TaskID Yes, I know I can put "Tasks.TaskID" into the order by clause, but for some reasons I can't.

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• Log of SVN activity for a certain user?

  - by Louis W

  Is it possible to query for all activity relating to a specific user across all repositories. Including any check out action? Thanks.

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• How to identify whether the table has identity column

  - by Shiny

  My Scenario is... I want to find out whether the table has an identity column or not.Table is unknown to me.I have not done the structure of the table.using Query? Im using Sql Compact.

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• Side-by-side comparison of data by month in SQL

  - by ScottR

  I have table similar to the following: Year | Product | Value 2006 A 10 2006 B 20 2006 C 30 2007 A 40 2007 B 50 2007 C 60 I would like a query that would return the following comparison Product | 2006 Value | 2007 Value A 10 40 B 20 50 C 30 60 What are the options to do so? Can it be done without joins? I'm working with DB2, but answers in all SQL types would be helpful.

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• Confused about distinct/aggregate queries with (N)Hibernate

  - by nw

  I'm not sure how to approach queries that don't map 1:1 to my persistent entities - in other words, distinct and aggregate queries. For example, I need to retrieve a distinct list of property values for populating a drop-down list. Should I write a class and a mapping for the "entities" that are returned by this query? Or should I just use the native DB provider and work with native data sets instead?

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• Count # of links programmatically

  - by Duber

  You know how if you type links: "yourwebsite.com" into the normal google search box, it tells you the number of sites linking to you and their addresses. How can I do it programmatically with php? Does google provide an api that can I can programmatically query? What are my options?

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• Foreign keys - temporarily bypass?

  - by Industrial

  Hi, I have just started to learn about the pros of foreign keys in database design (mySQL / innoDB) and I wonder if there's any way to temporarily bypass the foreign key when doing a specific delete query, to just delete in the parent table, and not from the linked child tables. Thanks

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• Is it possible to execute the two update queries in phpmyadmin together?

  - by Parth

  Is it possible to execute the two update queries in phpmyadmin together? Like wise UPDATE jos_menu SET home = 0 WHERE 1; UPDATE jos_menu SET home = 1 WHERE id = 9; Now can we copy both these queries together and Run it on phpmyadmin sql query panel? will it be executed?

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• MySQL grouping by a previously declared alias, what do I wrap it in? ' OR `

  - by cgmojoco

  I have an SQL query that has an alias in the SELECT statement SELECT CONCAT(YEAR(r.Date),_utf8'-',_utf8'Q',QUARTER(r.Date)) AS 'QuarterYear' Later, I want to refer to this in my group by statement. I'm a little confused...should I wrap this with backticks, single quote or just leave it unwrapped int he group by GROUP BY `QuarterYear ` or should I do this?: GROUP BY 'QuarterYear' or just this?: GROUP BY QuarterYear

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• ListView: Display data divided into groups?

  - by jawonlee

  I would like to display the contents of a DataTable, divided into several groups depending on the value of one of the columns. So, if I have a DataTable (from SQL query) with: GroupID Name Description 1 foo bar 1 one two 2 some thing I would like to place all records containing GroupID 1 in one div, all records with GroupID 2 in another div, and so on. How can I do this? I'm writing in ASP.NET 4.0, with C# codebehind.

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• Php function within SQL statement syntax

  - by Vafello

  I have the following code. I would like username to take the value of the getUserName function however I am fighting with syntax. Can anybody tell me what should be the correct one? $query = "SELECT user FROM users_entity WHERE username = getUserName()";

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• c# update xml file

  - by Pila

  I want to replace a xml node that is not a child of the root element. how can I do it - not in .Net 3.5? I don't know the exact path to the node I want to replace, I get the node by XPath query like : XmlElement root = doc.DocumentElement; oldItem = root.SelectSingleNode("//Node1[@name='aaa']//Node2[Item='bbb']/Value"); how can I replace this olditem?

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• what is a candidate row in SQL?

  - by JuiceBerry123

  What is a candidate row when talking about Oracle and SQL? Using it in a sentence would be as such: "The candidate row is fetched from the table specified in the outer query."

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• sql delete from rows value

  - by gloris

  The database includes a table with a rows: html/css/java/php How with sql query delete "java"? The result would be: html/css/php

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• How to select distinct in SQl Server 2008 but for only one field out of many?

  - by bakerjr

  I have a query: SELECT Content.content_name, Language2.Name, Language2.language_id, Content.id, Content.content_description, FROM Language AS Language2 LEFT JOIN contents AS Content ON (Language2.language_id = Content.language_id) How do I select only the distinct content_name?

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• Navigate through .Net Grid

  - by SH

  is there a way to navigate through gird found on this page by passing parameters in query string? http://pubrec3.hillsclerk.com/oncore/search.aspx?bd=01/01/2008&ed=12/31/2008&bt=O&lb=1000000&ub=1000000000&d=5/6/2010&pt=-1&dt=D,%20MTG&st=consideration Or any code suggestion? All example could i need in C#.

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• How to index small words (3 letters) with SQL Full-text search?

  - by Sly

  I have an Incident table with one row that has the value 'out of office' in the Description column. However the following query does not return that row. SELECT * FROM Incident WHERE CONTAINS( (Incident.Description), '"out*"' ) The word 'out' is not in the noise file (I cleared the noise file completely). Is it because SQL Full-text search does not index small words? Is there a setting for that? Note: I'm on SQL 2005.

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• Problem with sql like

  - by phenevo

  Hi, I'm writing sql query to my SqlCommand, and some part of them looks like: WHERE Path like N'+(select top 1 path from [Paths] where objectcode=@objectCode and objecttype=@objectType)+%' order by path desc,objecttype desc I get no records , bu when I wrote the same in sql server 2005 i have plenty rows... where path like (select top 1 path from [Paths] where objectcode='eg' and objecttype='0')+'%' order by path desc What's wrong ?? @objectType is 'eg'

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• SQL Server 2008 2mb Limit for XML??

  - by Nai

  I am trying to output a long XML result from SMSS. When I right click on the results and 'save results as...', I can only get a 2mb file? I have changed the settings in SMSS via Tools - Options - Query Results - SQL Server - Results to Grid, for XML data to be unlimited. Forever, it still seems to be truncating my XML results? So, how can I bypass this problem and output my XML result to a file? Thanks

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