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方法
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实例公共方法

index_name_length()

返回索引名称的最大长度。

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 21
def index_name_length
  max_identifier_length
end

table_alias_length()

返回表别名的最大长度。

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 16
def table_alias_length
  max_identifier_length
end

table_name_length()

返回表名的最大长度。

# File activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb, line 11
def table_name_length
  max_identifier_length
end