Hi, I’m working on optimizing some of my queries and I have a query that states: select * from SC where c_id ="+c_id” The schema of ** SC** looks like this: SC ( c_id int not null, date_start date not null, date_stop date not null, r_t_id int not null, nt int, t_p decimal, PRIMARY KEY (c_id, r_t_id, date_start, date_stop)); My ...
Hi, How do we perform indexing on a datetime field in oracle. We should be able to search for a specific year Thanks ...
I'd like to get some community consensus on a good design to be able to store and query word frequency counts. I'm building an application in which I have to parse text inputs and store how many times a word has appeared (over time). So given the following inputs: "To Kill a Mocking Bird" "Mocking a piano player" Would store the fo...
Does dropping a MySQL table automatically drop that table's indices too? ...
I am sorry if this is a dumb question (cause it sounds unlikely). I have a table that is 20 Million rows. However, only about 300K of these rows get accessed regularly, and they can be identified in a column condition called "app_user=1" Is there anyway i can just index those rows, and when I call a select, i will be sure to pass in t...
Hi, I am running some queries in my database and want to increase the performance and have created some indexes but I still think that the response time is to great so I want to see if I can create a better or another index to increase the speed. My schema for the table I think has the biggest bottleneck look like this: R_D( **id** i...
So Google takes: http://www.mysite.com/mypage/#!pageState and converts it to: http://www.mysite.com/mypage/?_escaped_fragment_=pageState ...So... Would be it fair game to redirect that with a 301 status to something like: http://www.mysite.com/mypage/pagestate/ and then return an HTML snapshot? My thought is if you have an exis...
As an example, here is a way to get a matrix of all possible outcomes of rolling 4 (fair) dice. z <- as.matrix(expand.grid(c(1:6),c(1:6),c(1:6),c(1:6))) As you may already have understood, I'm trying to work out a question that was closed, though, in my opinion, it's a challenging one. I used counting techniques to solve it (I mean by...
My specific concern is related to the performance of a clustered index on a reference table that has many rapid inserts and deletes. Table 1 "Collection" collection_pk int (among other fields) Table 2 "Item" item_pk int (among other fields) Reference Table "Collection_Items" collection_pk int, item_pk int (combined primary key) Becaus...
Hi, from classic asp on Windows 2008, using an IXSSO.Query, when searching for a string of numbers, for example 10000000001, I receive results that also include variations to this, like 10000000002 10000000003 and so on. If I change the first digit so the search string is 20000000001 I dont get anything. If I keep moving the last digi...
Hi All, I am working on Solr in my application. I am using apache-solr-solrj-1.4.0.jar When I try to call add(SolrInputDocument doc) of CommonsHttpSolrServer I am getting following exception: org.apache.solr.common.SolrException: Internal Server Error Internal Server Error at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.requ...
I have a table in MySQL with 7 indexes, most of them are on more than one column. I think here is too much indexes. Is there any way to get statistics of what indexes are used more by all thousands of queries to this database and what are less worthy so I know what index to consider to remove in first place? ...
I'm trying to use a localized index for my UITableView same as iPhone's Contacts application . here is how I return an array of characters: - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView { return [[UILocalizedIndexedCollation currentCollation] sectionIndexTitles]; } I changes the language setting to a non-Eng...
I am working on a website and I want to make pretty urls. The urls are for certain extensions I am going to make. For example I want to have a url like this: http://www.mydomain.com/extensions/tester http://www.mydomain.com/extensions/worker http://www.mydomain.com/extensions/this-is-a-really-long-ext-name So the tester, worker, etc ar...
Hi every one im new to php im working on sphider search feature im not getting how to index pdf using sphider can ayone one pls help me out in this thanks in advance. ...
I have an entity with many-to-one mapping. (Product 1-* Regions, unidirectional association) What is the best way to store index of such relation? So it can be easily used to filter search query . ...
I have an app using an Oracle 11g database. I have a fairly large table (~50k rows) which I query thus: SELECT omg, ponies FROM table WHERE x = 4 Field x was not indexed, I discovered. This query happens a lot, but the thing is that the performance wasn't too bad. Adding an index on x did make the queries approximately twice as fast, ...
I'm using the tracker indexing tool to search for and in files on my Ubuntu 10.10 amd64 system. Having recently added some of files into a single folder I wondered how to force tracker to re-index this folder so I would be able to perform search-queries on these files. Any ideas? A terminal command would be completely sufficient. ...
how does indexing increases the performance of data retrieval? How indexing works? ...
What is index in SQL? Can you explain or reference to understand clearly? Where should I use an index? I searched in Stack Overflow, but it is still not clear to me. ...