CreateQuery test (children 3)
 Identifier test
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration uuid (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_16
   ColumnDeclaration id (children 1)
    DataType int
   ColumnDeclaration ns (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_16
   ColumnDeclaration dt (children 1)
    DataType DateTime64 (children 1)
     ExpressionList (children 1)
      Literal UInt64_6
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier id
    Identifier dt
    Identifier uuid
