sql

noSQL/SQL/RoR: Trying to build scalable ratings table for the game

I am trying to solve complex thing (as it looks to me). I have next entities: PLAYER (few of them, with names like "John", "Peter", etc.). Each has unique ID. For simplicity let's think it's their name. GAME (few of them, say named "Hide and Seek", "Jump and Run", etc.). Same - each has unique ID. For simplicity of the case let it be ...

MySQL unique clustered constraint not constraining as expected

I'm creating a table with: CREATE TABLE movies ( id INT AUTO_INCREMENT PRIMARY KEY, name CHAR(255) NOT NULL, year INT NOT NULL, inyear CHAR(10), CONSTRAINT UNIQUE CLUSTERED (name, year, inyear) ); (this is jdbc SQL) Which creates a MySQL table with a clustered index, "index kind" is "unique", and spans the t...

Combine 2 apps into one DB?

I'm debating whether to use the same DB for both my blog and my wiki. Since both are open source, and both install the required tables which is a very small number of tables for both apps, I'm thinking about just using one database to represent both sets of tables. Is this common and safe to do? I am hesitant because I always create a...

plpgsql function to generate random readable strings

I have written the following function but it's isn't returning anything when I run it. Can somebody help identify the issue? CREATE OR REPLACE FUNCTION GenerateReadableRandomString ( len INT ) RETURNS varchar AS $$ DECLARE validchars VARCHAR; randomstr VARCHAR; randint INT; i INT; BEGIN validchars := 'ABCEFHJKLMNPRTWXY3478'; i := 0; ...

postgresql table for storing automation test results

I am building an automation test suite which is running on multiple machines, all reporting their status to a postgresql database. We will run a number of automated tests for which we will store the following information: test ID (a GUID) test name test description status (running, done, waiting to be run) progress (%) start time of t...

Changing DBML, how to change SQL database?

Hi all, A have an app with that uses an SQL database. The application is already released, but now I'm working on an update. In the update I've added an extra column in a table of my database. I've create the database from my DMBL using DataContext.CreateDatabase() (not the other way around, as I found out to be the more common scenari...

I need some ideas on my algortihm for a Hit Counter (Group By Time Interval)

My algorithm is for a 'hit counter', I am trying to not count the same person twice if that person came to the site twice in a time interval (For example if he comes twice in 5 minutes, I want to count it as 1 hit for this person) Here's what my database looks like UserIp UserId Date of user came 127.0.0.1 new.user.akb ...

How can I connect to a principal database when a failover occurs in SQL server 2005?

How can I connect to a principal database when a failover occurs in SQL server 2005 using TSQL.....after failover a pricipal database becomes mirror but still how can i connect to the new pricipal using SQL command ...

SQl queries searching by date range

Hi, I have a table in an Access 2007 database. All fields are of type text. Can the following be done using the where clause? If so how? SELECT * from Table1 WHERE (ColumnDate is between 26th and 19th of march 2010) SELECT * from Table1 WHERE (ColumnAge is between 25 and 40) The usual < <= operators don't seem to work. Thanks, ...

Query on Vertical partitioning in Sybase

hi, Am working with sybase.In that i have a table A of some 2 million records containing some columns which i want to move out and make it as a separate table B. I have some questions in this process... 1. I have decided to use vertical partitioning.Is that ok? 2.Or what other technique can i go about using in this process? Please prov...

SQL Reporting Services Daylight saving time query (pt 2)

I posted a question a couple of days ago (SQL Reporting Services Daylight saving time query) which was I received an answer for (thanks very much) but did not elaborate on the whole problem I am experiencing. Not only did I require the returned date time format to account for day light saving but I also need the search parameter @StartDa...

Creating stored procedure having different WHERE clause on different search criteria without putting all in long string.

Is there any alternate way to create stored procedure without putting all query in one long string if criteria of WWHERE clause can be different. Suppose I have Orders table I want to create stored procedure on this table and there are three column on which I wnat to filter records. 1- CustomerId, 2- SupplierId, 3- ProductId. If user ...

How can I extend this SQL query to find the k nearest neighbors?

I have a database full of two-dimensional data - points on a map. Each record has a field of the geometry type. What I need to be able to do is pass a point to a stored procedure which returns the k nearest points (k would also be passed to the sproc, but that's easy). I've found a query at http://blogs.msdn.com/isaac/archive/2008/10/23/...

Searching Week-wise/Month-wise record counts(number) and the StartDate+EndDate(datetime) of the Week/Month with Search between two Dates

I have a question in connection to this question earlier posted by me:- http://stackoverflow.com/questions/2452984/daily-weekly-monthly-record-count-search-via-storedprocedure I want to have the Count of Calls on Weekly-basis and Monthly-basis, Daily-basis issue is resolved. ISSUE NUMBER @1:Weekly-basis Count of Calls and Start-Date a...

Error creating a table : "There is already an object named ... in the database", but not object with that name

Hi, I'm trying to create a table on a Microsoft SQL Server 2005 (Express). When i run this query USE [QSWeb] GO /****** Object: Table [dbo].[QSW_RFQ_Log] Script Date: 03/26/2010 08:30:29 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO SET ANSI_PADDING ON GO CREATE TABLE [dbo].[QSW_RFQ_Log]( [RFQ_ID] [int] NOT NULL...

error in the syntax of cmd parameters

hi guyz in this method i m just adding the values to the db. temp is a object. the field value and variables in the object re havin the same name.. dono y this error s comin plz help me out... public virtual void Save_input_parameter_details(Test_Unit_BLL temp ) { SqlConnection con; con = new SqlConne...

SQL Select * from multiple tables

Using PHP/PDO/MySQL is it possible to use a wildcard for the columns when a select is done on multiple tables and the returned array keys are fully qualified to avoid column name clash? example: SELECT * from table1, table2; gives: Array keys are 'table1.id', 'table2.id', 'table1.name' etc. I tried "SELECT table1.*,table2.* ..." but...

Linq-to-SQL: Ignore null parameters from WHERE clause

The query below should return records that either have a matching Id supplied in ownerGroupIds or that match ownerUserId. However is ownerUserId is null, I want this part of the query to be ignored. public static int NumberUnderReview(int? ownerUserId, List<int> ownerGroupIds) { return ( from c in db.Contacts ...

Creating an index with a where clause - SQL SVR 2005

I have recently discovered the ability to use WHERE clauses within indexes in SQL Server 2005. I would like to optimize some queries, and was hoping to get some feedback. The table of interest contains 2 float columns, [long] and [short]. These columns could be 0 in 20-40% of rows. There are several stored procs that query this table...

Replication in workgroup

I have configured transactional replication with Publisher and distributor which are on same and subscriber on different servers. Publisher and Distributor are running on MSSQL 2008 and the subscriber is running on MSSQL 2008. The both PC are running in the same workgroup. When I go to view synchronization status on Publisher, i am gett...