Search Results

Search found 17194 results on 688 pages for 'document databases'.

Page 344/688 | < Previous Page | 340 341 342 343 344 345 346 347 348 349 350 351  | Next Page >

• What Can A 'TreeDict' (Or Treemap) Be Used For In Practice?

  - by Seun Osewa

  I'm developing a 'TreeDict' class in Python. This is a basically a dict that allows you to retrieve its key-value pairs in sorted order, just like the Treemap collection class in Java. I've implemented some functionality based on the way unique indexes in relational databases can be used, e.g. functions to let you retrieve values corresponding to a range of keys, keys greater than, less than or equal to a particular value in sorted order, strings or tuples that have a specific prefix in sorted order, etc. Unfortunately, I can't think of any real life problem that will require a class like this. I suspect that the reason we don't have sorted dicts in Python is that in practice they aren't required often enough to be worth it, but I want to be proved wrong. Can you think of any specific applications of a 'TreeDict'? Any real life problem that would be best solved by this data structure? I just want to know for sure whether this is worth it.

  Read the article

• Conditional Batch file renaming with mysql data

  - by Paul Stevens

  Hello, I wonder if anyone knows how could I rename multiple files, all of them originally named with same structure, and add some data extracted from a mysql DB according to specifics rules. For example I have 500 files named with this vars: ID NAME ADDRESS PHONE.wav = 1234567 PAULSIMON WESTDR122 9942213456.wav Now I need to rename files taking some data from the databases for each file, and append the data from a query appended to the filename. For example add the data resulting from a query Where some conditions match, and the data to build the query is taked from original file name, as ID or NAME. i other words, lets say that I want to build a query taking ID & NAME from file 1234567 PAULSIMON WESTDR123 9942213456.wav as WHERE statements to take another value as BirthDATE and add this to new filename, so final result should be: ID NAME ADDRESS PHONE BIRTHDATE.wav I will appreciate any help on this. I need this to be done on a LINUX server.

  Read the article

• how can I get back /usr/local/bin/mysql on Snow Leopard?

  - by Ole Media

  From terminal and trying to uninstall macports, I ran a command, rm -rf / macports...., that erased bunch of stuff. I feel ashamed about this, not realizing the space after /. Since then, mysql is running but I cannot execute any of the mysql commands because it is not under /usr/local/bin/ I went ahead an reinstall mysql but without luck. What steps do you recommend on doing in order to be able to run mysql, mysqlduml, mysqladmin, from terminal? I can access databases from phpmyadmin, so mysql is running, don't ask me how.

  Read the article

• Dynamically Specify Linked Server and DB Names in Stored Procedure

  - by hgulyan

  I have the same query in a stored procedure that needs to be executed on different servers and databases according to parameters. How can I arrange this without exec or sp_executesql? I'm using SQL Server 2008. Thank you. UPDATE I've found some links http://www.eggheadcafe.com/software/aspnet/29397800/dynamically-specify-serve.aspx http://www.sommarskog.se/dynamic_sql.html Is using SYNONYM possible solution? If yes, than how? UPDATE 2 I forgot to mention that all this servers are linked to the server where stored procedure is stored.

  Read the article

• As a team should we develop locally and merge into the dev server, or develop on the dev server?

  - by CogitoErgoSum

  Hey, Recently I was tasked with writing up formal procedures for a team based development enviroment. We have several projects with multiple modules each. Right now there are only two programmers, however there are plans to expand to 4-6 programmers. Each programmer will be working on the same project and possibly pages which may cause over writing or error issues. So far the ideal solution I have thought up is: Local development (WAMP/VM or some virtual server instance on their own machine). Once a developer has finished their developments, they check it into the CVS Repository and merge it wih other fixes etc. The CVS version is then deployed to the primary dev server for testing by the devs. The MySQL DAtabases are kept on the primary dev server and users may remotely connect to it. Any Schema / Data alterations are run through a DB Admin who will notify all devs of any DB Changes (Which should be rare). Does anyone see an issue with this or have a better solution?

  Read the article

• File synck tool with network support (FTP or SSH) and decent GUI

  - by Álvaro G. Vicario

  Is there a decent GUI tool for Windows that allows to publish files from/to a remote FTP (or SFTP) server with the same ease of use that WinMerge offers in local discs? I'll basically use it to upload changes to web sites. I've tried like a dozen tools and they're all terrible. They have difficult interfaces, you need to spend ten minutes configuring absurdly complicate project settings, there's no simple way to ignore specific files or they use custom databases that break when someone else uploads files—not to mention deployment frameworks that force you to script everything in their custom language. I don't need or even want to schedule or automate. I want a manual process I can review. I'm tired of picking files one by one in Filezilla while reading the Subversion logs. I'd love an open source tool but...

  Read the article

• Seeking free ODBC database optimization tool for non-experts

  - by mawg

  I'm a database n00b and am reading as many books as I can. I have been given responsibility for an ODBC tool where the databases were designed by a hardware engineer with some VB experience - which made him a s/w guru in the small firm at that time. Things are running slowly and I suspect that the db could have been designed better. I hope to learn enough to use Explain/Describe, etc maybe add some indices, but, in the meantime, is there any free for commercial use tool which can examine an ODBC database and suggest improvements. I'm just talking about db schema here, but maybe I should also be looking at optimizing Selects with Joins? Is there a tool for that? ODBC compliant.

  Read the article

• How to implement automatic reflection of direct SQL Updates of the underlying database, in an ActiveRecord in Ruby on Rails ?

  - by Vadim Eisenberg

  Hello ! I am new to Ruby on Rails and I have a (maybe naive) question: I want to implement reflection of direct SQL Updates of the underlying database in an ActiveRecord (and finally in the generated html). By "direct updates" I mean updating the database bypassing the ActiveRecord methods, for example by MySQL console. I guess here MySQL triggers could be used that would call some stored procedure that would cause the appropriate ActiveRecord to be reloaded. Is there some automatic handling of this scenario in ActiveRecord/Ruby on Rails ? Did somebody implement this scenario ? Can somebody recommend using other MVC frameworks to reflect direct changes in mapped databases ?

  Read the article

• FlockDB - What is it? And best cases for it uses.

  - by Guru

  Just came across FlockDB graph database. Details at github /flockDB. Twitter claims it uses FlockDB for the following: Twitter runs FlockDB on a large cluster of machines. we use it to store social graphs (who follows whom, who blocks whom) and secondary indices at twitter. At first glance, setup and trying it doesn't look straight forward. Have anyone already used it / setup this? If so, please answer the following general queries. What kind of applications is it better suited for? (Twitter claims it is simple and very rough, it remains to see what it meant though) How is FlockDB better than other graph db / noSQL db. Have you setup FlockDB, used it for a application? Early advices any? Note: I am evaluating the FlockDB and other graph databases mainly for learning them. Perhaps, I will build an application for that.

  Read the article

• Stored Procedure or calculations via IQueryable?

  - by Shawn Mclean

  This is a question that is based on choosing performance over design practices. If I have a method that will be executed many times a second; public static IQueryable<IPerson> InRadius(this IQueryable<IPerson> query, Coordinate center, double radius) { return (from u in query where CallHeavyMathFormula(u, center, radius) select u); } This extension method for IQueryable generates a SQL that does some heavy maths calculation (Cosine, Sine, etc). This would mean the application sends 1-2KB of sql to the server per call. I've heard of placing all application logic, in your application. I also would like to change to a database such as azure or one of those scalable databases in the future. How do I handle something like this? Should I leave it as it is now or write stored procedures? How do applications like twitter or facebook do it?

  Read the article

• Create Mssql database from c# - using Parameters

  - by Alon M

  i am trying to put up a code to create a databases from my c# code (asp.net website). this is my code - SqlCommand myCommand = new SqlCommand("CREATE DATABASE @dbname", nn); myCommand.Parameters.Add("dbname", dbname); myCommand.ExecuteNonQuery(); nn.Close(); well, its not working. its giveing me an error - this one : incoreect syntex near '@dbname'. BUT. if i wont use parameters, peolpe can sql inj to my database. do you have any idea how can use anything, to get the database name from a textbox. and that peolpe cant sql inj me db?

  Read the article

• Escaping Problem in bash using isql

  - by latz

  Hi there, I am currently working on a little backup script from some firebird databases and I've come up with a weird escaping problem that I don't seem to be able to solve. Here's the thing in my script I create a variable called sqllog in which I would like to put the output of a chain of commands, here it is. sqllog=echo "SELECT * FROM RDB\$DATABASE;" | isql -u SYSDBA -pass mypasswd localhost:mydatabase | tail -n 2 | head -n 1 | wc -l if I try to execute this in shell I get the following error Statement failed, SQLCODE = -204 Dynamic SQL Error -SQL error code = -204 -Table unknown -RDB -At line 1, column 15. Table unknown RDB means it didn't take my try to escape the $. thx for any help :)

  Read the article

• PHP 5.3, using old authentication?

  - by Geir

  Hi. We're setting up a new webserver with PHP5.3 and are getting the "Error: could not connect: mysqlnd cannot connect to MySQL 4.1+ using old authentication ?" error message. After some google'ing I've found that we should set old passwords = 0 in my.cnf and reset the password(s). But we still have webservers running php 4.x & 5.2 that access the same mysql server (different users & databases), how will these be affected by this ? Will the mysql server be compatible with all the different PHP versions ? Thanks.

  Read the article

• Is there a size limitation for an Access DB destination in SSIS?

  - by Adam V

  I'm creating an SSIS package, which will read through a user's SQL database and populate the tables in an Access database. However, for the largest user databases, I start getting errors around the time the Access file reaches approx. 2 GB. Has anyone run into this problem? Is this a size limitation for this operation? More information: I'm getting the error code 0xC020907B, but no additional information that I can see. Error: 0xC0209029 at , [733]: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR. The "input "OLE DB Destination Input" (746)" failed because error code 0xC020907B occurred, and the error row disposition on "input "OLE DB Destination Input" (746)" specifies failure on error. An error occurred on the specified object of the specified component. There may be error messages posted before this with more information about the failure.

  Read the article

• How to solve 'Badly constructed integrity constraints' in doctrine

  - by Carson

  When I execute the command './doctrine build-all-reload' It comes out the following output: build-all-reload - Are you sure you wish to drop your databases? (y/n) y build-all-reload - Successfully dropped database for connection named 'doctrine' build-all-reload - Generated models successfully from YAML schema build-all-reload - Successfully created database for connection named 'doctrine' Badly constructed integrity constraints. Cannot define constraint of different f ields in the same table. Here is the source code of Doctrine that outputs the error: here What causes the error? How can I debug where the error comes from?

  Read the article

• Is there a combination of "LIKE" and "IN" in SQL?

  - by Techpriester

  Hi folks. In SQL I (sadly) often have to use "LIKE" conditions due to databases that violate nearly every rule of normalization. I can't change that right now. But that's irrelevant to the question. Further, I often use conditions like WHERE something in (1,1,2,3,5,8,13,21) for better readability and flexibility of my SQL statements. Is there any possible way to combine these two things without writing complicated sub-selects? I want something as easy as WHERE something LIKE ('bla%', '%foo%', 'batz%') instead of WHERE something LIKE 'bla%' OR something LIKE '%foo%' OR something LIKE 'batz%' I'm working with MS SQl Server and Oracle here but I'm interested if this is possible in any RDBMS at all.

  Read the article

• SEO Url Redirect/Rewrite Using Database Managed Links

  - by user204245

  I have searched left and right. And i am trying to find a script or a method on how I can store links in database and use them for redirection. This is an E-commerce project and I am looking for something to manage Product and system URL from database. Something Similar like magneto dose. Basically anything after the domain say like domain.com/demo/12/my_iphone so now demo/12/my_iphone will be sent to database for querry and in databases there will be a destination URL which could be productlisting.php?searchstring=iphones so the user will see link domain.com/demo/12/my_iphone but actualy he will be seeing productlisting.php?searchstring=iphones basically demo/12/my_iphone = productlisting.php?searchstring=iphones and tomorrow if the user want to edit demo/12/my_iphone to demo/12/myiphone he can just do so using simple form which will update in the database. How can i achieve this ?

  Read the article

• Database Schema Validation - deployable/compilable

  - by boomhauer

  Looking for a tool that will allow building database schema validation that can be compiled into a standalong tool or as a module to be used in another application. The scenario is - a client/server application that is sold to customers, and maintained through service releases. The service releases include database scripts to updated the database with any schema changes etc. However, since this is a database and the customer could either run upgrade scripts incorrectly, or tinker around and mess up something in the DB I would like to have this tool available with each release so we can verify the struture, and possibly some data, is valid. Also to have it available for remote debugging when a customer has a service ticket. Schema compare tools I've researched work great for comparing local databases, but I haven't seen something that can generate something that is deployable with our application. Thanks!

  Read the article

• Errors with large data sources

  - by The Sheek Geek

  I'm doing some benchmarking on large data sources and binding/exporting data for reporting. I started with using a data set, filling it with 100000 rows and then attempting to open a crystal report with the retrieved data. I noticed that the data set filled just fine (took about 779 milliseconds) however, when attempting to export the data to the report or even bind to a gridview the application would fail with an OutOfMemoryException. Does anyone experienced this before or have an idea of how to get around it? It is very possible that clients will run reports for years worth of data and 100000 rows are not inconceivable. The application and the benchmark code are written in C# using ORACLE and SQL Server databases. I still have some data sources to test, but would like to know how to get around this just in case I don't find a better solution.

  Read the article

• Customizing Bugzilla 4.0.2 Bug ID numbers

  - by Marcus Polk

  Is it possible to customize Bugzilla bug numbers and add a letter designator, to immediately know it came from Bugzilla? My company is evaluating Bugzilla and has now added many new bugs. We also use 2 other bug databases. This wasn't my decision and I believe they were trying to incorporate better reporting, etc. I read an answer here about "seeding" Bugzilla bug numbers, by setting the "AUTO_INCREMENT" field in the "bugs" table to a different value. I wish I would've thought about this sooner and found this board. Setting that value to start at 9000 or some extraordinary value would have ensured that we knew exactly which bugs came from Bugzilla. However, would it be possible to change the field in the "bugs" table to accept letters, as well? Of course that would probably just mess up the whole auto incrementing of the numbers. Any help or advice is greatly appreciated. Thank you.

  Read the article

• Looking for alternatives to the database project.

  - by Dave

  I've a fairly large database project which contains nine databases and one database with a fairly large schema. This project takes a large amount of time to build and I'm about to pull my hair out. We'd like to keep our database source controlled, but having a hard getting the other devs to use the project and build the database project before checking in just because it takes so long to build. It is seriously crippling our work so I'm look for alternatives. Maybe something can be done with Redgate's SQL Compare? I think maybe the only drawback here is that it doesn't validate syntax? Anyone's thoughts/suggestions would be most appreciated.

  Read the article

• IF/ELSE makes stored procedure not return a result set

  - by Brendan Long

  I have a stored procedure that needs to return something from one of two databases: IF @x = 1 SELECT @y FROM Table_A ELSE IF @x = 2 SELECT @y FROM Table_B Either SELECT alone will return what I want, but adding the IF/ELSE makes it stop returning anything. I tried: IF @x = 1 RETURN SELECT @y FROM Table_A ELSE IF @x = 2 RETURN SELECT @y FROM Table_B But that causes a syntax error. The two options I see are both horrible: Do a UNION and make sure that only one side has any results: SELECT @y FROM Table_A WHERE @x = 1 UNION SELECT @y FROM Table_B WHERE @x = 2 Create a temporary table to store one row in, and create and delete it every time I run this procedure (lots). Neither solution is elegant, and I assume they would both be horrible for performance (unless MS SQL is smart enough not to search the tables when the WHERE class is always false). Is there anything else I can do? Is option 1 not as bad as I think?

  Read the article

• After getting the 'It worked!' page with Djangoappengine, what do I do next?

  - by Jacques Bosch

  I followed the Djangoappengine instructions. I used their django-testapp and copied the following folders in the django-testapp folder according to what I understood the instructions to say: django djangoappengine djangotoolbox I then started the dev server by running: manage.py runserver Then navigated to http://localhost:8000/ and got the "It worked!" page, which is great, but it says the following at the bottom: You're seeing this message because you have DEBUG = True in your Django settings file and you haven't configured any URLs. Get to work! I am an absolute beginner with Django and App Engine and Djangoappengine and Django-nonrel, so I am pretty lost. How do I configure URLs? Or a link to the how to will help. I took a look at the Django tutorial, but am unsure how much of it is relevant to Djangoappengine and Django-nonrel as a lot of the starting steps have to do with SQL databases. Basically some direction on how to get my app running will be great. Thanx much.

  Read the article

• SQL script to show addition to tables

  - by andreas

  Hey all I have a 2 MS SQL 2005 databases,a TEST and DEV database. Now our developer added some extra columns,tables etc in the DEV database.This created differences in the TEST database.is there a script i can write tha can tell me what the changes where in the DEV database between certain dates...i found a couple of tools but they are quite basic and dont really generate change scripts etc. Also tried the change script function in management studio but it seems to be working when the change is first made and not later. Appreciate your thoughts. A.

  Read the article

• MySQL User AutoIncrement Permissions Restriction

  - by psayre23

  I have two databases that need to have their auto increment ids on various tables synced. Right now, I have a PHP function that checks the current auto increment id for both tables and then sets the lowest to the highest. If there is a better way to do this, I'm all ears. I really don't want to give the web user alter permissions, as a SQL injection could clear all passwords (or something else silly). Is there any way to restrict a MySQL user to changing auto increment without opening it up to alter statements?

  Read the article

< Previous Page | 340 341 342 343 344 345 346 347 348 349 350 351  | Next Page >