How to skip UNION?
SELECT members.ID
FROM members
ORDER BY Right([ID],3), Right(id,4)
Under the new rules, this mess can work.
SELECT
Len(IIf([textId] Like "[a-z][a-z][0-9][0-9][0-9][0-9]",Left([textid],2),
IIf([textId] Like "[a-z][a-z][a-z][0-9][0-9][0-9]",Left([textid],3),
IIf([textId] Like "[a-z][a-z][a-z][a-z][0-9][0-9]",Left([textid],4),"_")))) AS Ln,
IIf(textId Like "[a-z][a-z][0-9][0-9][0-9][0-9]",Left(textid,2),
IIf(textId Like "[a-z][a-z][a-z][0-9][0-9][0-9]",Left(textid,3),
IIf(textId Like "[a-z][a-z][a-z][a-z][0-9][0-9]",Left(textid,4),"_"))) AS Alpha,
IIf(textId Like "[a-z][a-z][0-9][0-9][0-9][0-9]",Val(Right(textid,4)),
IIf(textId Like "[a-z][a-z][a-z][0-9][0-9][0-9]",Val(Right(textid,3)),
IIf(textId Like "[a-z][a-z][a-z][a-z][0-9][0-9]",Val(Right(textid,2)),0))) AS Numbr,
table.textid
FROM table
ORDER BY
Len(IIf([textId] Like "[a-z][a-z][0-9][0-9][0-9][0-9]",Left([textid],2),
IIf([textId] Like "[a-z][a-z][a-z][0-9][0-9][0-9]",Left([textid],3),
IIf([textId] Like "[a-z][a-z][a-z][a-z][0-9][0-9]",Left([textid],4),"_")))),
IIf(textId Like "[a-z][a-z][0-9][0-9][0-9][0-9]",Left(textid,2),
IIf(textId Like "[a-z][a-z][a-z][0-9][0-9][0-9]",Left(textid,3),
IIf(textId Like "[a-z][a-z][a-z][a-z][0-9][0-9]",Left(textid,4),"_"))),
IIf(textId Like "[a-z][a-z][0-9][0-9][0-9][0-9]",Val(Right(textid,4)),
IIf(textId Like "[a-z][a-z][a-z][0-9][0-9][0-9]",Val(Right(textid,3)),
IIf(textId Like "[a-z][a-z][a-z][a-z][0-9][0-9]",Val(Right(textid,2)),0)))