CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      DataType UInt64
      DataType UInt64
   ColumnDeclaration val (children 1)
    DataType UInt64
 Storage definition (children 1)
  Function Memory