Search Results

Search found 956 results on 39 pages for 'querying'.

Page 14/39 | < Previous Page | 10 11 12 13 14 15 16 17 18 19 20 21  | Next Page >

• what does synchronization mean in hibernate..

  - by abc

  i read that upon session.flush() The data will be synchronized (but not committed) when session.flush() is called what is synchronized with what.. whether it is DB state that will come to memory by querying or memory state will be copied to Db ? clarify this plz..

  Read the article

• sizeof(class) c++

  - by badkya

  How is it possible for sizeof(class) to return two different values depending on context? The class itself should have the same size right irrespective of where I ask this question? I see a smaller value when querying class size from main() and another when I query class size from an extended class.

  Read the article

• Where Does Temporary Tables Gets stored in sql server.

  - by Shantanu Gupta

  Where does temporary tables gets stored in database. I want to drop a temporary table if it already exists. I can do this for securable table by querying at information schema but i done know where temporary tables are stored

  Read the article

• SSAS Cube Availability While Being Rebuilt

  - by MasterMax1313

  Is a SSAS 2008 cube available to be queried while it's being rebuilt? If yes, then are there implications to querying it during a rebuild?

  Read the article

• MS Access: index optimisation

  - by Patrick Honorez

  Let's say we have a [Valuations] table containing several values per date and per fund: -FundId -ValDate -Value1 -Value2... The Primary key is obviously FundId+ValDate. I have also indexed the ValDate field since I often query for values on a specific date. My question is: should I also create a specific index for the FundId, or is MsAccess clever enough to use the Primary key when querying on a specific FundId ?

  Read the article

• Oracle Merge vs Select then Insert or Update

  - by DRTauli

  What is faster? the Merge statement MERGE INTO table USING dual ON (rowid = 'some_id') WHEN MATCHED THEN UPDATE SET colname = 'some_val' WHEN NOT MATCHED THEN INSERT (rowid, colname) VALUES ('some_id', 'some_val') or querying a select statement then using an update or insert statement. SELECT * FROM table where rowid = 'some_id' if rowCount == 0 INSERT INTO table (rowid,colname) VALUES ('some_id','some_val') else UPDATE table SET colname='some_val' WHERE rowid='some_id'

  Read the article

• Using a user-defined type as a primary key

  - by Chris Kaminski

  Suppose I have a system where I have metadata such as: table: ====== key name address ... Then suppose I have a user-defined type described as so: datasource datasource-key A) are there systems where it's possible to have keys based on user-defined types? B) if so, how do you decompose the keys into a form suitable for querying? C) is this a case where I'm just better off with a composite primary key?

  Read the article

• How to use the IN operator in linq

  - by Hallaghan

  I'm querying a view and filtering the results with a column named status. I'd like to query it so I can search for rows with different status, by using the IN operator as I'd do in SQL. As so: SELECT * FROM VIEW WHERE Status in ('....', '.....') How can I achieve this?

  Read the article

• How can I get FOUND_ROW()s from an active record object in rails?

  - by Justin Tanner

  When querying the database with: @robots = Robot.all(:limit => 50, :offset => 0) What is the best way to get the total number of rows without the :limit? In raw MySQL you could do something like this: SELECT SQL_CALC_FOUND_ROWS * FROM robots LIMIT 0, 50 SELECT FOUND_ROWS();

  Read the article

• Language independent logic question

  - by Sam

  If one has three fields in a db that they are querying an object by.... One of these fields must always be an associations id. Concerning the other two fields "only one needs to be true" What interpretation do you take or make of "only one needs to be true"?

  Read the article

• Filtering Linux command output

  - by Raajkumar

  Hi, I need to get a row based on column value just like querying a database. I have a command output like this, Name ID Mem VCPUs State Time(s) Domain-0 0 15485 16 r----- 1779042.1 prime95-01 512 1 -b---- 61.9 Here I need to list only those rows where state is "r". Something like this, Domain-0 0 15485 16 r----- 1779042.1 I have tried using "grep" and "awk" but still I am not able to succeed. Please help me on this issue. Regards, Raaj

  Read the article

• Assign query results to MySQL variable

  - by 5un5

  I'm querying a big mysql database with only read privileges, and I'd like to set some slow query results to a variable, 'foo', so I can use them again in other queries. I get, ERROR 1193 (HY000): Unknown system variable '$foo' when I enter: set $foo := (select * from table1 join table2 where bar = 0 group by id); Is there a way to do this with variables, since I don't have privileges to create temporary tables?

  Read the article

• LDAP user data caching on local database

  - by Eduardo

  I am integrating LDAP authentication in my web enterprise application. I would like to show listing of people name and email. Instead of querying the LDAP server for the name and email each time a listing containing several users I thought about caching the data locally in the database. Do you guys know about caching LDAP data best practices? Should I cache LDAP user data? When should I insert and refresh the data?

  Read the article

• Query scope within a table trigger in an Oracle database

  - by sisslack

  I'm been trying to write a table trigger the queries another table that is outside the schema where the trigger will reside. Is this possible? It seems like I have no problem querying tables in my schema but I get: Error: ORA-00942: table or view does not exist when trying trying to query tables outside my schema. The documentation seems to elude to this notion, but it's not 100% clear to me.

  Read the article

• Using SQL Server Views with NHibernate

  - by colinramsay

  I have a site that sells cars. On the frontend, I want to only show cars that are published, and on the backend I want to show all cars. Whether a car is published or not depends on a number of factors, so I wanted to create a view to simplify this. My question is, can I reduce duplication by dynamically telling NHibernate to sometimes use the "PublishedCar" view and something use the "AllCar" view when querying/fetching Car entities?

  Read the article

• Amazon API library for Python?

  - by Kevin

  What Python libraries do folks use for querying Amazon product data? (Amazon Associates Web Service - used to be called E-Commerce API, or something along those lines). Based on my research, PyAWS (http://pyaws.sourceforge.net/) seems okay, but still pretty raw (and hasn't been updated in a while). Wondering if there's an obvious canonical library that I'm just missing.

  Read the article

• MySQL using function IN with variable

  - by misanov

  I have problem querying table with variable in IN function. SELECT s.date, (SELECT GROUP_CONCAT(value) FROM value WHERE id_value IN(s.ref_values) ) AS vals FROM stats s ORDER BY s.date DESC LIMIT 1 Where s.ref_values is '12,22,54,15'. I get only one return for first number (12). When I insert that value directly in IN(12,22,54,15) it finds all 4. So, there must be problem with using variable in IN. What am I doing wrong?

  Read the article

• PHP - get MySQL query results as their native data type?

  - by redidas

  I've tried fetching MySQL query results using mysql_fetch_row() mysql_result() and numeric values are being returned as strings. Is there any way to fetch the data as its datatype stored in the table? The application will be querying many different queries so I will be unable to cast the values as the intended datatype on a 1 by 1 basis.

  Read the article

• Good book for sql

  - by Uday

  I always considered database as a storage . but never thought it can be used for querying across tables etc. Which is a good book for sql for a developer. not just the syntax. How to write a query in different ways How internally queries are executed.etc especially related to microsoft sql server

  Read the article

• sqlalchemy natural sorting

  - by teggy

  Currently, i am querying with this code: meta.Session.query(Label).order_by(Label.name).all() and it returns me objects sorted by Label.name in this manner ['1','7','1a','5c']. Is there a way i can have the objects returned in the order with their Label.name sorted like this ['1','1a','5c','7'] Thanks!

  Read the article

• Comparison of IPEndPoint objects not working

  - by Martin Mizzell

  I have an IPEndPoint a and b, whose IPAddress and Port are exactly the same, but the == operator is on the IPEndPoint not returning true. To make things even stranger, I tried to circumvent the problem by simply comparing the IPAddress and Port individually and it is STILL not returning true. Has anyone encountered this before? If so, I am all ears to performant solutions. We have collections of as many as 10k IPEndPoints and are querying into them via LINQ (PLINQ pretty soon).

  Read the article

• Primary key in MySQL: INT(n) or UUID as varchar(36)

  - by SODA

  Does it make sense to use UUID as primary key in MySQL? What would be pros and cons of using UUID instead of regular INT, beside trouble of hand querying?

  Read the article

• Most efficient way to move a few SQL Server tables to SQLite?

  - by wom

  I have a fairly large SQL Server database; I'd like to pull 4 tables out and dump them directly into an sqlite.db for remote querying (via nightly batch). I was about to write a script to step through(most likely on a unix host kicked off via cron); but there should be a simpler method to export the tables directly (SQLite not an option in the included DTS Import/Export wizard) What would the most efficient method of dumping the SQL Server tables to SQLite via batch be?

  Read the article

• Is there an efficient way to query a document database?

  - by Zubair

  Since document databases store records in tree like structures the fields will never be at set positions. Does this make querying a document database inefficient, or would indexes just be used as with a normal relational database?

  Read the article

• jquery quering the database

  - by mazhar

  the thing is that there are number of items in the html select list,what i want to do is to click on any of the item, then query the database on the id of that item. retrieve the value and then display that in the textbox, how would i query the database? I would really appreciate that if someone provides the code sample for querying the database

  Read the article

< Previous Page | 10 11 12 13 14 15 16 17 18 19 20 21  | Next Page >