Function MakeCollatedString

pkg/sql/types/types.go:987–993

MakeCollatedString constructs a new instance of a CollatedStringFamily type that is collated according to the given locale. The new type is based upon the given string type, having the same oid and width values. For example: STRING => STRING COLLATE EN VARCHAR(20) => VARCHAR(20) COLLATE EN

(strType *T, locale string)

//	STRING      => STRING COLLATE EN
//	VARCHAR(20) => VARCHAR(20) COLLATE EN
func MakeCollatedString(strType *T, locale string) *T {
	if oidCanBeCollatedString(strType.Oid()) {
		return &T{InternalType: InternalType{
			Family: CollatedStringFamily, Oid: strType.Oid(), Width: strType.Width(), Locale: &locale}}
	}
	panic(errors.AssertionFailedf("cannot apply collation to non-string type: %s", strType))
}

// MakeCollatedType is like MakeCollatedString but also handles NULL and arrays
// of string types that need to become arrays of collated string types.