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Search found 17003 results on 681 pages for 'multi index'.

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• when to index on multiple keys in mongodb

  - by Evan

  say I have an Item document with :price and :qty fields. I sometimes want to find all documents matching a given :price AND :qty, and at other times it will be either :price on its own or :qty on its own. I have already indexed the :price and :qty keys, but do I also need to create a compound index on both together or are the single key indexes enough?

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• oracle using index even though there is no filter criteeria specified

  - by Kaushik

  In this query: SELECT WTTEMPLATE.TEMPLATEuID, MAX (WTTRX.VALUEDATE) AS template_last_use_date FROM wttemplate, wttrx WHERE WTTEMPLATE.TEMPLATEID = WTTRX.TEMPLATEID(+) AND WTTEMPLATE.CUSTID = WTTRX.CUSTID GROUP BY WTTEMPLATE.TEMPLATEuID The explain plan shows:index fast full scan using indexes on WTTEMPLATE.TEMPLATEID and (WTTRX.TEMPLATEID,WTTRX.CUSTID). My question is this: I have not specified any filter criteria , so how can it use indexes? It should do full scan...right?

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• 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 ?

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• Can I have both index and create actions in the index view?

  - by cravr

  Hi all, Using the perennial example of a Blog webapp (and all resources are currently automatically mapped in routes.rb): I have a simple index page that lists all my Post titles. I would like to add a form at the bottom of this page to quickly create new Posts. I'm new to Rails and can't seem to figure this out! Please help!

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• how to echo/access the 'get' index of the given array in PHP syntax

  - by OM The Eternity

  I have the array variable say $value, and it has the below given array [navigation] => navigationHistory Object ( [path] => Array ( [0] => Array ( [page] => order_form.php [mode] => NONSSL [get] => Array ( [id] => 31 ) ) ) ) how to echo/access the 'get' index of the given array in PHP syntax

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• How to renumber primary index.

  - by Kamil Mroczek

  I have got a simple MySQL table and primary index (id) is not numbered one by one (1, 31, 35, 100 etc.). I want them to be numbered like (1, 2, 3, 4). Please tell me how to do it. I would also like to point that I am aware of possible consequences of the operation, but I just want to tidy up the table.

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• mysql: difference between primary key and unique index?

  - by every_answer_gets_a_point

  i need to change one of the fields of a table to auto increment and to be the primary key. what does unique index mean?

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• Checking for a dirty index or untracked files with Git

  - by Robert Munteanu

  How can I check if I have any uncommitted changes in my git repository: Changes added to the index but not committed Untracked files from a script? git-status seems to always return zero with git version 1.6.4.2.

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• Filter assemblies/namespaces out of Visual Studio 2005 Documentation index

  - by PunctuallyChallenged

  Is there any way to remove certain assemblies or namespaces from the index of (or entirely from) the Visual Studio 2005 Documentation? System.Web.UI and System.Windows.Forms contain many identical class names and I'd like to eliminate those in System.Web.UI that are irrelevant to me.

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• How would Sphinx Search index / handle JSON files?

  - by ming yeow

  I have a mysql database that stores mainly JSON objects. I am thinking of using Sphinx to search through it - but i was wondering how would i index and retrieve these json objects?

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• how to remove node index when delete a node

  - by anru

  Hi All: When I am remove a node from drupal , I also am want to remove index for that node. how can I do that. I am use drupal 6.

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• TableView with section & Index

  - by iavian

  could anyone point me to some examples on how to achieve Tableview with section and Index on Section. Similar to one it's in iPhone = http://www.iphonesdkarticles.com/2009/01/uitableview-indexed-table-view.html

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• terminating index process for search engine

  - by Sadegh

  hi, i am working on a small search-engine app with asp.net 4.0. the indexing process can index each URL founded in each document and this recursively performed for each other. now how i can terminate this process when i want or when user clicked on stop browser button?

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• Why does searching an index have logarithmic complexity?

  - by Lieven Cardoen

  Is an index not similar to a dictionary? If you have the key, you can immediately access it? Apparently indexes are sometimes stored as B-Trees... why is that?

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• Index a mysql table of 3 integer fields

  - by Doori Bar

  I have a mysql table of 3 integer fields. None of the fields have a unique value - but the three of them combined are unique. When I query this table, I only search by the first field. Which approach is recommended for indexing such table? Having a multiple-field primary key on the 3 fields, or setting an index on the first field, which is not unique? Thanks, Doori Bar

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• Finding index inside a Javascript regular expression match.

  - by alex

  i had string like this in javascript var str = "This is my test string is Ingrédients"; the substring "Ingrédients" can be also as "Ingredients" how to get the index of substring "Ingrédients" from the above string by applying regular expression ( Ingr[ée]dients )

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• starting index from 1 not from 0

  - by M.H

  My question is simple (I think it is silly too) ,how can I start the index in an ArrayList from 1 instead of 0 ? is this possible directly (I mean is there a code for this ) ?. Actually a friend asked me this question today, first I thought that it is a silly question but after a while I thought if there is a direct way to do that and decided to ask it to you (maybe you have some brilliant ideas :) )

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• Index of arrays and strings in c++

  - by anurag18294

  I want to know from where the index of a string and an array starts from. I am getting a lot of confusion while making programs. While calculating string length of a string is the null character also counted.

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• [R] select values from list using Date as index

  - by Pieter

  Suppose I have a list as follows bar=c() bar["1997-10-14"]=1 bar["2001-10-14"]=2 bar["2007-10-14"]=1 How can I select from this list all values for which the index is within a specific date range? So, if I look for all values between "1995-01-01" and "2000-06-01", I should get 1. And similarly for the period "2001-09-01" and "2007-11-04", I should get 2 an 1.

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• for (Object object : list) [java] and index element

  - by EugeneP

  Is there a way to get an element id of a list to get it later through list.get(index) when using for(Object obj: o) construction Only define a local var and manually incrementing it? Anything simpler?

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• Search a full text index for 'c#'

  - by KKirk

  Hi I have a table (lets say it has one column called 'colLanguage') that contains a list of skills and has a full text index defined on it. One of the entries in the table is 'c#' but when I search for 'c#' (using the following SQL) I get no results back. select * from FREETEXTTABLE(tblList, colLanguage, 'c#') Can anyone help? Thanks K

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• WARNING: RubyGems 1.2+ index not found for: RubyGems will revert to legacy indexes degrading per

  - by Sam

  WARNING: RubyGems 1.2+ index not found for: RubyGems will revert to legacy indexes degrading performance. If anyone can walk me through this problem I will give them $50.00 I've exhausted google, have reinstalled everything. All i want to to is gem install ... that's it

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• How to make firefox to spellcheck in multiple languages simultaneously?

  - by Vi

  I want to it to assume that text may be in mixture of languages and words should be looked up in multiple dictionaries. (E.g. everything in en-GB, en-US, ru, be and be-classic should be consider as good, everything else should be underlined and corrections from all dictionaries should be offered). Is there an add-on for "multi-language spell-check"? Alternatively, can I merge all dictionaries into one big combined dictionary?

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• How to limit a process to a single CPU core?

  - by Jonathan

  How do you limit a single process program run in a Windows environment to run only on a single CPU on a multi-core machine? Is it the same between a windowed program and a command line program? UPDATE: Reason for doing this: benchmarking various programming languages aspects I need something that would work from the very start of the process, therefore @akseli's answer, although great for other cases, doesn't solve my case

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• Forcing a mixed ISO-8859-1 and UTF-8 multi-line string into UTF-8

  - by knorv

  Consider the following problem: A multi-line string $junk contains some lines which are encoded in UTF-8 and some in ISO-8859-1. I don't know a priori which lines are in which encoding, so heuristics will be needed. I want to turn $junk into pure UTF-8 with proper re-encoding of the ISO-8859-1 lines. Also, in the event of errors in the processing I want to provide a "best effort result" rather than throwing an error. My current attempt looks like this: $junk = &force_utf8($junk); sub force_utf8 { my $input = shift; my $output = ''; foreach my $line (split(/\n/, $input)) { if (utf8::valid($line)) { utf8::decode($line); } $output .= "$line\n"; } return $output; } While this appears to work I'm certain this is not the optimal solution. How would you improve my force_utf8(...) sub?

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