ms access - SQL to Get Only One Record for Each "item" Based on different column -


i have worked week researching question , learning different sql techniques. trying display results in listbox in microsoft access. have columns sqlidofloggers, jobnumber, datedeployed, datereturned, ahulocation, accesspoint , 2 comboboxes cbologgertype , cboorderby filter these results (i did workaround cboorderby using vba, that's why not in posted sql).

what want pull 1 record each distinct sqlidoflogger. determine 1 record among several each sqlidoflogger want order them datereturn-eds , pick latest don't want show records datereturn null, i.e. they're still out on job

this sql have brings correct information, shows more 1 record each logger:

select      (select top 1 tblloggers.loggerid tblloggers tblloggers.id = tbluse.idoflogger) sqlidoflogger,     (select top 1 tblprojectlist.jobnumber tblprojectlist where( tblprojectlist.id = tbluse.idofproject)) expr1,     tbluse.datedeployed, tbluse.datereturned, tbluse.ahulocation, tbluse.accesspoint tbluse (         (iif([forms]![frmbytype].[cbologgertype]<>'(all)',             ((select top 1 tblloggers.loggertype tblloggers tblloggers.id = tbluse.idoflogger order id)=[forms]![frmbytype].[cbologgertype]),             '*')<>false ) , (         (tbluse.datereturned) in (select max(tbluse.datereturned) tbluse group tbluse.idoflogger)) ) group tbluse.datedeployed, tbluse.datereturned, tbluse.ahulocation, tbluse.accesspoint, tbluse.idofproject, tbluse.idoflogger order 1, tbluse.ahulocation;

i tried clean code best possible. know it's not ideal, kept adding bits , pieces went along , "works". post i've tried last little bit of equation none of them work (obviously haha). don't know best course of action (group by, join, exists, etc.), i'm open suggestions.


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