Consolidated different create and create! versions to call through to the base class with scope. This fixes inconsistencies, especially related to protected attribtues.


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find supports :lock with :include. Check whether your database allows SELECT ... FOR UPDATE with outer joins before using. Closes #6764.

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Add AssociationCollection#create! to be consistent with AssociationCollection#create when dealing with a foreign key that is a protected attribute


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Added counter optimization for AssociationCollection#any? so person.friends.any? won't actually load the full association if we have the count in a cheaper form [DHH]

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Change fixture_path to a class inheritable accessor allowing test cases to have their own custom set of fixtures. Closes #6672 [zdennis]



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Simplify query_attribute by typecasting the attribute value and checking whether it's nil, false, zero or blank. Closes #6659.

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validates_numericality_of uses \A \Z to ensure the entire string matches rather than ^ $ which may match one valid line of a multiline string. Closes #5716.

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MySQL: detect when a NOT NULL column without a default value is misreported as default ''.  Can't detect for string, text, and binary columns since '' is a legitimate default. Closes #6156.

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Simplify association proxy implementation by factoring construct_scope out of method_missing. Closes #6643.

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Oracle: to increase performance, prefetch 100 rows and enable similar cursor sharing. Both are configurable in database.yml. Closes #6607.

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Consistently use LOWER() for uniqueness validations (rather than mixing with UPPER()) so the database can always use a functional index on the lowercased column. Closes #6495.

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SQLite: count(distinct) queries supported in >= 3.2.6, fix calculations workaround, remove count(distinct) query rewrite, cleanup test connection scripts. Closes #6544.

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Oracle: resolve test failures, use prefetched primary key for inserts, check for null defaults. Factor out some common methods from all adapters. Closes #6515.

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Fix has_many :through to add the appropriate conditions when going through an association using STI. Closes #5783. [Jonathan Viney]  (sorry, forgot to commit the actual files)

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