CreateQuery test (children 4)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration stamp (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType DateTime (children 1)
       ExpressionList (children 1)
        Literal \'UTC\'
 Storage definition (children 4)
  Function MergeTree
  Function toDate (children 1)
   ExpressionList (children 1)
    Identifier stamp
  Function tuple (children 1)
   ExpressionList
  Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function plus (children 1)
      ExpressionList (children 2)
       Function toDateTime (children 1)
        ExpressionList (children 2)
         Literal \'2020-01-01\'
         Literal \'UTC\'
       Function multiply (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_60
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal Float64_1000
