Rails: Adding an index after adding column

Rails: Adding an index after adding column

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Index on multiple columns in Ruby on Rails

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Index for multiple columns in ActiveRecord

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Best SQL indexes for join table

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Need two indexes on a HABTM join table?

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ruby-on-rails

Mysql::Error: Specified key was too long; max key length is 1000 bytes

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adding index to email column culprit for unit tests failing

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Rails 3 Database Indexes and other Optimization

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add_index to Data Model - Ruby on Rails Tutorial

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Add unique constraint to an existing PostgreSQL index

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Rails Migration: indexes on a renamed table

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Rails: How to add add_index to existing table

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Rails and Postgres Hstore: Can you add an index in a migration?

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Changing Index Page - Ruby on Rails

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Should I joint-index an ActiveRecord polymorphic association?

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