Also added change_column_null to both mysql and sqlite to keep the api features closer to postgresql.

[#617 state:resolved]

Also fixed ability to run migration_test.rb alone

[#616 state:resolved]

MySQL: treat integer with :limit => 11 as a display width, not byte size, for backward-compatibility.

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Signed-off-by: NMichael Koziarski <michael@koziarski.com>

Fix migrations when migrating to a specified version number with a fresh database [#1 state:resolved]
Signed-off-by: NJoshua Peek <josh@joshpeek.com>

Add support for interleaving migrations by storing which migrations have run in the new schema_migrations table. Closes #11493 [jordi]

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Switched to UTC-timebased version numbers for migrations and the schema. This will as good as eliminate the problem of multiple migrations getting the same version assigned in different branches. Also added rake db:migrate:up/down to apply individual migrations that may need to be run when you merge branches (closes #11458) [jbarnette]

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test_native_types expects DateTime.local_offset instead of DateTime.now.offset; fixes test breakage due to dst transition

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Fix issue where Table#references doesn't pass a :null option to a *_type attribute for polymorphic associations.  Closes #10753 [railsjitsu]

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* TestCase: introduce declared setup and teardown callbacks. Pass a list of methods and an optional block to call before setup or after teardown. Setup callbacks are run in the order declared; teardown callbacks are run in reverse.  [Jeremy Kemper]


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Honor Ruby's default calendar reform setting when creating DateTime objects via ActiveRecord's Time -> DateTime overflow, Time#time_with_datetime_fallback, Time#to_datetime, Date#to_datetime and String#to_datetime. Closes #10201

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Test harness for Sexy Migrations. [Koz]
Closes #9775


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