SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function CAST (alias i64) (children 1)
     ExpressionList (children 2)
      Literal UInt64_1426860704886947840
      Literal \'Int64\'
    Literal \'Asia/Shanghai\' (alias tz)
   ExpressionList (children 6)
    Identifier tz
    Identifier i64
    Function snowflakeToDateTime (alias dt) (children 1)
     ExpressionList (children 2)
      Identifier i64
      Identifier tz
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier dt
    Function snowflakeToDateTime64 (alias dt64) (children 1)
     ExpressionList (children 2)
      Identifier i64
      Identifier tz
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier dt64