Update query

[drunkenneo]

I Have two tables:

DE Code
-------- ---------
id PK id PK
orig FK ref id code cod
Dest FK ref id code flag


flag

here the code tables have column flag entry as 0 or 1

Problem is if either one of orig and dest have flag entries as 1 or both have 1 i want to update the flag in DE table as 1 or else 0. Can i acheive that by using a query, Please help

[NTC]

well no one has answered probably because the layout of your 2 tables is scrambled to make it really difficult to understand..... but presuming that field 'id PK' is the join field between the two tables......then you don't actually need to record the 'flag' field in the DE table because it is calculate-able.....and thus always available to you already. In a query you would have this field:

DEflag: iif(DE.orig=-1 or Code.dest=-1,-1,0)

so that is an IIF statement - you'll want to look that up to understand that syntax....which returns -1 (or yes in a yes/no field) if the 'Orig' field in the DE table is checked or if the 'dest' field in the Code table is checked....

I've made some assumptions on what the field names are because your table info is all scrambled....and when you say a 'flag entry' I am assuming that means -1 in a check box yes/no field type......

hopefully this helps.....

[drunkenneo]

Thanks for response NIC, as i got the way for it, this is added to my information for use, thanks a ton