1 files changed, 39 insertions, 0 deletions
diff --git a/lib/gitlab/pagination/keyset/in_operator_optimization/column_data.rb b/lib/gitlab/pagination/keyset/in_operator_optimization/column_data.rb
new file mode 100644
index 00000000000..3f620f74eca
--- /dev/null
+++ b/lib/gitlab/pagination/keyset/in_operator_optimization/column_data.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Pagination
+    module Keyset
+      module InOperatorOptimization
+        class ColumnData
+          attr_reader :original_column_name, :as, :arel_table
+
+          def initialize(original_column_name, as, arel_table)
+            @original_column_name = original_column_name.to_s
+            @as = as.to_s
+            @arel_table = arel_table
+          end
+
+          def projection
+            arel_column.as(as)
+          end
+
+          def arel_column
+            arel_table[original_column_name]
+          end
+
+          def arel_column_as
+            arel_table[as]
+          end
+
+          def array_aggregated_column_name
+            "#{arel_table.name}_#{original_column_name}_array"
+          end
+
+          def array_aggregated_column
+            Arel::Nodes::NamedFunction.new('ARRAY_AGG', [arel_column]).as(array_aggregated_column_name)
+          end
+        end
+      end
+    end
+  end
+end