CreateQuery mt_compact (children 3)
 Identifier mt_compact
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration d (children 1)
    DataType Date
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration s (children 1)
    DataType String
 Storage definition (children 4)
  Function MergeTree
  Identifier d
  Identifier id
  Set
