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module ActiveRecord
module ConnectionAdapters
module MySQL
module ColumnDumper
def column_spec_for_primary_key(column)
spec = super
if column.type == :integer && !column.auto_increment?
spec[:default] = schema_default(column) || "nil"
end
spec[:unsigned] = "true" if column.unsigned?
spec
end
def prepare_column_options(column)
spec = super
spec[:unsigned] = "true" if column.unsigned?
spec
end
def migration_keys
super + [:unsigned]
end
private
def default_primary_key?(column)
super && column.auto_increment?
end
def schema_type(column)
if column.sql_type == "tinyblob"
:blob
else
super
end
end
def schema_precision(column)
super unless /time/.match?(column.sql_type) && column.precision == 0
end
def schema_collation(column)
if column.collation && table_name = column.table_name
@table_collation_cache ||= {}
@table_collation_cache[table_name] ||= select_one("SHOW TABLE STATUS LIKE '#{table_name}'")["Collation"]
column.collation.inspect if column.collation != @table_collation_cache[table_name]
end
end
end
end
end
end
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