CreateQuery test_compact (children 3)
 Identifier test_compact
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration a (children 1)
    DataType Int32
   ColumnDeclaration b (children 1)
    DataType Int32
   ColumnDeclaration c (children 1)
    DataType Int32
  ExpressionList (children 1)
   Index (children 2)
    Identifier b
    Function minmax (children 1)
     ExpressionList
 Storage definition (children 3)
  Function MergeTree
  Identifier a
  Set
