CreateQuery test_alter_attach_01901S (children 3)
 Identifier test_alter_attach_01901S
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration A (children 1)
    DataType Int64
   ColumnDeclaration D (children 1)
    DataType date
 Storage definition (children 3)
  Function MergeTree
  Identifier D
  Identifier A
