I'm in a situation where I want to add the equivalent of the sql statement
SET QUERY_GOVERNOR_COST_LIMIT
to my query I created with linq to entities.
How would I go about that?
Having a bit of difficulty figuring out how to create a named_scope from this SQL query:
select * from foo where id NOT IN (select foo_id from bar) AND foo.category = ? ORDER BY RAND() LIMIT 1;
Category should be variable to change.
What's the most efficient way the named_scope can be written for the problem above?
In my experience I have used many queries like select, order by, where clause etc.. in mysql, sql-server, oracle etc
For a moment i have thought,
1)how is this internally written to implement the above queries
2) which language do they use?
3) is that programming language? if yes which language?
4)what kind of environment required to implement this kind of complex database
Hey,
Am new to LINQ, and am trying to retrieve the top 50 rows of a particular table.
In SQL Server using an actual query i coudl say "Select TOP 50 from Transactions" , but not sure how i need to do that with LinQ
Any pointers that could help ?
Thanks !
Hello all ,
I am using this function SQLRTTESTCONNECTION2() to connect to SQL server.
Its returning me as value 1 ,which means failure to establish a connection.
What could be possible cause for this?Any ideas please?
We build a system that handling the billing analyse and what it does it just have a raw bill from vendor and process to "common" table and this is using SQL Server 2005 Integration Services.
At the moment, the batch has 300,000 rows and it took about 6 minutes to process. Now, the current spec are:
2 CPUs Intel Xeon E5345 @ 2.33 GHz
RAM 4GB
Is there anyway I can speed up this process?
What is the fastest and most stable non-sql database to store big data and process thousands requests during the day (it's for traffic exchange service)? I've found Kdb+ and Berkeley DB. Are they good? Are there other options?
I have found few links but could not decide which one is the best way.
http://fabiomaulo.blogspot.com/2009/06/localized-property-with-nhibernate.html
(This stores all localised language data in one field. Can be a problem if we query from Sql)
http://ayende.com/Blog/archive/2006/12/26/LocalizingNHibernateContextualParameters.aspx
(This one has a warning at the beginning that it is a hack and no longer supported)
http://www.webdevbros.net/2009/06/24/create-a-multi-languaged-domain-model-with-nhibernate-and-c/
(This does not describe how multilingual data will be structured in the database.)
Hi!
I have got model Team and I've got (i.e.) team = Team.first :offset => 20. Now I need to get number of position of my team in db table.
I can do it in ruby:
Team.all.index team #=> 20
But I am sure that I can write it onSQL and it will be less expensive for me with big tables.
I am building a web site similar to Craigslist. I would like to know how to store the html formatted text (bold / italics / font size etc) in a sql 2008 database?
In order words, the user would enter their text, format it with font size, bold etc and save the information. Whats the most efficient way to store that in a database?
I'm trying to build a rather specific query to find a set of user_ids based on topics they have registered to.
Unfortunately it's not possible to refactor the tables so I have to go with what I've got.
Single table with user_id and registration_id
I need to find all user_ids that have a registration_id of (4 OR 5) AND NOT 1
Each row is a single user_id/registration_id combination.
My SQL skills aren't the best, so I'm really scratching my brain. Any help would be greatly appreciated.
Hi
Is entity frameworth worth moving to for a new small app? About 10 tables and a WinForms app.
ie the alternative being DataTables/DataRows or Linq-to-SQL
I'm using iBATIS to create select statements. Now I would like to implement the following SQL statement with iBATIS:
SELECT * FROM table WHERE col1 IN ('value1', 'value2');
With the following approach, the statement is not prepared correctly and no result returns:
SELECT * FROM table WHERE col1 IN #listOfValues#;
iBATIS seems to restructure this list and tries to interpret it as a string.
How can I use the IN clause correctly?
Hi All,
I am using mysql_real_escape_string($_REQUEST['page']) in my code. Is it able to prevent SQL Injection in my php code else i will have to do more protection ?
Thanks
I am a web developer and i would like to shift my field to data warehousing.
Can anyone please give me some idea , which langauges or stuff i need to learn like cogonos , datastage, etl
or IF anyone currently working can guide me how can i start , i will thankful to you.
DO i nned to do oracle because i know mysql , sql. My basic understanding with databse is good.
Any books
Hello to all,
what is the maximum value of data type INTEGER in sqlite3 ?
How do you store ip address in database ?
What is attached ?
How to create table which belongs to a specific database using sql ddl?
What is this error about ?
error while the list of system
catalogue : no such table: temp.sqlite_master
Unable to execute statement
Does sqlite3 text data type supoports unicode?
Thanks.
We need some simple ad-hoc reporting solution for our ASP.NET web-site.
Just an ability to build a query with user friendly interface, then show the result of this query in some table and maybe export it to Excel or print.
The solution must be quite easy for end users (our site visitors) who know nothing about databases, SQL and other tech stuff.
I have been searching for a while about how EF utilizes connections to SQL Server DB, and whether it is using Connection pools under the hood, but I couldn't find any details about that.
I've read lots about using local storage for android but how would I connect to an SQL database online to send and get data?
For example, if I was making a game and wanted to create a worldwide high score table, how would I store that online and make sure it was only available to that app?
Thanks, Jon
i have database table like this
+-------+--------------+----------+
| id | ip | date |
+-------+--------------+----------+
| 505 |192.168.100.1 |2010-04-03|
| 252 |192.168.100.5 |2010-03-03|
| 426 |192.168.100.6 |2010-03-03|
| 201 |192.168.100.7 |2010-04-03|
| 211 |192.168.100.10|2010-04-03|
+-------+--------------+----------+
how can i retirive data from this table where month=03 how to write sql to do that .
select * from table where month=03
something like that .
i have money field in sql table when i m extracting record by table and binding it to datagrid it show money as well 100.0000 four character from decimal i need only two .
Plz suggest.
Hello All
I have 2 tables Project and ProjectList like this
Project
ProjectID
Name
ProjectListID - allow null
In ProjectList
ProjectListID
ProjName
Now what i need here, i want only those recoed from ProjectList table which ProjectListID not in Project table.
I made a query but it is taking lot of time to execute.
select * FROM projectslist pl where pl.ProjectsListID not in (SELECT p.ProjectsListID FROM project p where (p.ProjectsListID is not null and p.ProjectsListID <>0))
Please help me to create optimize query. I am using My SQL.
The use case is to have an application store data on the client side when offline.
Is it advisable to use the Web SQL Database (which Chrome and Safari support, not FF though), or wait for the browsers to implement the Indexed Database API?
I am running unit tests and when I try to insert data in the database and getting it right after, I don't get anything (I have tried with DataAdapter and DataReader).
However when I put a 3 seconds sleep (even with 1 second it doesn't work...) between the insert and the select I get the result.
In SQL Server Profiler I can see the execution, the insert is well done and is completed about 10 miliseconds before the select begins.
I can't find out where this comes
How to store the file which is uploaded by the user to the database ? I want to store the file in the database how can we do that ? In the back-end I am using sql with c#.net application.