Sha256: 19fa00fb88d096564dfcbd0a7caf7b83766bf09fe9780f66798e4fdb727b5df6

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Size: 1.56 KB

Versions: 35

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Stored size: 1.56 KB

Contents

module ActiveRecord
  module ConnectionAdapters # :nodoc:
    module DatabaseLimits

      # Returns the maximum length of a table alias.
      def table_alias_length
        255
      end

      # Returns the maximum length of a column name.
      def column_name_length
        64
      end

      # Returns the maximum length of a table name.
      def table_name_length
        64
      end

      # Returns the maximum allowed length for an index name. This
      # limit is enforced by \Rails and is less than or equal to
      # #index_name_length. The gap between
      # #index_name_length is to allow internal \Rails
      # operations to use prefixes in temporary operations.
      def allowed_index_name_length
        index_name_length
      end

      # Returns the maximum length of an index name.
      def index_name_length
        64
      end

      # Returns the maximum number of columns per table.
      def columns_per_table
        1024
      end

      # Returns the maximum number of indexes per table.
      def indexes_per_table
        16
      end

      # Returns the maximum number of columns in a multicolumn index.
      def columns_per_multicolumn_index
        16
      end

      # Returns the maximum number of elements in an IN (x,y,z) clause.
      # nil means no limit.
      def in_clause_length
        nil
      end

      # Returns the maximum length of an SQL query.
      def sql_query_length
        1048575
      end

      # Returns maximum number of joins in a single query.
      def joins_per_query
        256
      end

    end
  end
end

Version data entries

35 entries across 35 versions & 4 rubygems

Version Path
autocompl-0.0.1 test/dummy/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.1/lib/active_record/connection_adapters/abstract/database_limits.rb
abaci-0.3.0 vendor/bundle/gems/activerecord-5.0.0/lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.1 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.1.rc2 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.1.rc1 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.1 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.rc2 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.racecar1 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.rc1 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.beta4 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.beta3 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.beta2 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.beta1.1 lib/active_record/connection_adapters/abstract/database_limits.rb
activerecord-5.0.0.beta1 lib/active_record/connection_adapters/abstract/database_limits.rb