On Tuesday 26 March 2002 3:30 pm, adam nelson wrote:
> It's been a while since I've done this, does anybody remember:
>
>
> If I have 2 tables:
>
> tblPerson (
> iPersonID int
> szPersonDesc varchar
> iPersonType int
> )
>
> tblPersonType (
> iPersonType int
> szPersonType varchar
> )
>
> iPersonType = iPersonType (foreign key between the 2 tables)
>
> iPersonType is a list in the form of 1,2,4,8,16,32,64
>
> so, let's suppose that szPersonType for 8 is lawyer and szPerson type
> for 2 is redhead
>
> a value of iPersonType of 10 would mean redhead lawyer.
>
> I'd like a query that looks for lawyers (ie. iPerson type is any number
> from 8 to 15 or 16+8=32 or 16+8+4=28 or 16+8+1=29 or 16+8+4+2=30 or
> 32+8=40 or 32+8+4=44 ,etc. up to the max(iPersonType))
Use AND. I forget the SQL syntax for it but in C, you'd do:
if (iPersonType & 8) {
// yes
} else {
// no
}
Note that this is different from the && operator.
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