CreateQuery mt_00160 (children 3)
 Identifier mt_00160
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration d (children 2)
    DataType Date
    Function toDate (children 1)
     ExpressionList (children 1)
      Literal \'2015-05-01\'
   ColumnDeclaration x (children 1)
    DataType UInt64
 Storage definition (children 4)
  Function MergeTree
  Identifier d
  Identifier x
  Set
