CreateQuery dict_src_big (children 3)
 Identifier dict_src_big
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration id (children 1)
    DataType UInt64
   ColumnDeclaration grp (children 1)
    DataType String
   ColumnDeclaration grp_round (children 1)
    DataType String
 Storage definition (children 1)
  Function Memory
