File compatibility.rb has 384 lines of code (exceeds 250 allowed). Consider refactoring.

Open

module ActiveRecord
  class Migration
    module Compatibility # :nodoc: all
      def self.find(version)
        version = version.to_s

Method index_name_for_remove has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

          def index_name_for_remove(table_name, column_name, options)
            index_name = connection.index_name(table_name, column_name || options)

            unless connection.index_name_exists?(table_name, index_name)
              if options.key?(:name)

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Method create_table has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

        def create_table(table_name, **options)
          if connection.adapter_name == "PostgreSQL"
            if options[:id] == :uuid && !options.key?(:default)
              options[:default] = "uuid_generate_v4()"
            end

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Method change_column has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

        def change_column(table_name, column_name, type, **options)
          if connection.adapter_name == "PostgreSQL"
            super(table_name, column_name, type, **options.except(:default, :null, :comment))
            connection.change_column_default(table_name, column_name, options[:default]) if options.key?(:default)
            connection.change_column_null(table_name, column_name, options[:null], options[:default]) if options.key?(:null)

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Method legacy_index_name has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

Open

            def legacy_index_name(table_name, options)
              if Hash === options
                if options[:column]
                  "index_#{table_name}_on_#{Array(options[:column]) * '_and_'}"
                elsif options[:name]

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