Function isValidUnquotedIdentifier

backend/plugin/parser/redshift/completion.go:270–285

isValidUnquotedIdentifier checks if the identifier can be used without quotes in Redshift.

(s string)

// isValidUnquotedIdentifier checks if the identifier can be used without quotes in Redshift.
func isValidUnquotedIdentifier(s string) bool {
	if len(s) == 0 {
		return false
	}

	first := rune(s[0])
	if !unicode.IsLetter(first) && first != '_' {
		return false
	}
	for _, ch := range s[1:] {
		if !unicode.IsLetter(ch) && !unicode.IsDigit(ch) && ch != '_' {
			return false
		}
	}
	return true
}

func convertCandidateType(t redshiftcompletion.CandidateType) base.CandidateType {
	switch t {