Top "Indexing" questions

Script for rebuilding and reindexing the fragmented index?

Can anyone provide the script for rebuilding and re-indexing the fragmented index when 'avg_fragmentation_in_percent' exceeds certain limits (…

sql-server indexing fragmentation

What does the KEY keyword mean?

In this MySQL table definition: CREATE TABLE groups ( ug_main_grp_id smallint NOT NULL default '0', ug_uid …

mysql indexing

PHP reindex array?

I have array that i had to unset some indexes so now it looks like $myarray [0] a->1 [1] a-7 b-&…

php arrays indexing

Create or update mapping in elasticsearch

I am new to Elasticsearch and am currently working on implementing a geo_distance filter for searching. As of now …

indexing elasticsearch geocoding

Remove empty strings from array while keeping record Without Loop?

This question was asked here: Remove empty strings from array while keeping record of indexes with non empty strings If …

javascript arrays indexing string removeall

Get index of array element faster than O(n)

Given I have a HUGE array, and a value from it. I want to get index of the value in …

ruby arrays performance indexing

pandas loc vs. iloc vs. ix vs. at vs. iat?

Recently began branching out from my safe place (R) into Python and and am a bit confused by the cell …

python pandas performance indexing lookup

creating a new list with subset of list using index in python

A list: a = ['a', 'b', 'c', 3, 4, 'd', 6, 7, 8] I want a list using a subset of a using a[0:2],a[4], a[6:], …

python list indexing subset

Rails: Adding an index after adding column

Suppose I created a table table in a Rails app. Some time later, I add a column running: rails generate …

ruby-on-rails indexing migration

start index at 1 for Pandas DataFrame

I need the index to start at 1 rather than 0 when writing a Pandas DataFrame to CSV. Here's an example: In [1]: …

python pandas csv dataframe indexing