}
		for _, arg := range e.SFunc.ArgsList {
			result.combine(arg.analyze(s))
		}
		return result

	case sqlFnTrim:
		if e.Trim.TrimChars != nil {
			result.combine(e.Trim.TrimChars.analyze(s))
		}
		if e.Trim.TrimFrom != nil {
			result.combine(e.Trim.TrimFrom.analyze(s))
		}
		return result

	case sqlFnSubstring:

}

// TrimFunc represents TRIM sql function
type TrimFunc struct {
	TrimWhere *string      `parser:" \"TRIM\" \"(\" ( @( \"LEADING\" | \"TRAILING\" | \"BOTH\" ) "`
	TrimChars *PrimaryTerm `parser:"             @@?  "`
	TrimFrom  *PrimaryTerm `parser:"             \"FROM\" )? @@ \")\" "`
}

// DateAddFunc represents the DATE_ADD function
type DateAddFunc struct {