CreateQuery 03578_keepermap_nullable (children 3)
 Identifier 03578_keepermap_nullable
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt16
   ColumnDeclaration val (children 1)
    DataType String
 Storage definition (children 2)
  Function KeeperMap (children 1)
   ExpressionList (children 1)
    Function concat (children 1)
     ExpressionList (children 3)
      Literal \'/\'
      Function currentDatabase (children 1)
       ExpressionList
      Literal \'/test_03578_type_cast_null\'
  Identifier key
