cause:      err,
	}
}

func errParseMissingIdentAfterAt(err error) *s3Error {
	return &s3Error{
		code:       "ParseMissingIdentAfterAt",
		message:    "Did not find the expected identifier after the @ symbol in the SQL expression.",
		statusCode: 400,
		cause:      err,
	}
}

func errParseUnexpectedOperator(err error) *s3Error {
	return &s3Error{
		code:       "ParseUnexpectedOperator",

// OpenBSD, Windows, and illumos do not support O_DIRECT.
// On Windows there is no documentation on disabling O_DIRECT.
// For these systems we do not attempt to build the 'directio' dependency since
// the O_DIRECT symbol may not be exposed resulting in a failed build.
//
//
// On illumos an explicit O_DIRECT flag is not necessary for two primary
// reasons. Note that ZFS is effectively the default filesystem on illumos
// systems.
//

	if lerr != nil || len(e.Right) == 0 {
		return lval, lerr
	}

	// Process remaining child nodes - result must be
	// numeric. This AST node is for terms separated by + or -
	// symbols.
	for _, rightTerm := range e.Right {
		op := rightTerm.Op
		rval, rerr := rightTerm.Right.evalNode(r, tableAlias)
		if rerr != nil {
			return nil, rerr
		}
		err := lval.arithOp(op, rval)

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseMissingIdentAfterAt: {
		Code:           "ParseMissingIdentAfterAt",
		Description:    "Did not find the expected identifier after the @ symbol in the SQL expression.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseUnexpectedOperator: {
		Code:           "ParseUnexpectedOperator",