Question

Please can you take a look at this query and point out what I’m doing wrong:

update @output
set fromdate = o.fromdate,
    todate = o.todate
from
(
    select fromdate, max(todate)
    from @output as o
    left join status as es on
        o.number = es.empid and
        o.ccode = es.compcode and
        @status = es.status
)

I’m trying to update @output with the record thats contains the max(todate). The error I’m getting is:

Msg 156, Level 15, State 1, Procedure CHP_OR_PENSIONEMPLOYEEENROLMENT_842, Line 138
Incorrect syntax near the keyword ‘select’.

Answer 1

Following script should perform the update.

UPDATE  @output
SET     fromdate = om.fromdate
        , todate = om.todate
FROM    @output o
        INNER JOIN (
          SELECT  o.number
                  , o.fromdate, 
                  , todate = MAX(todate)
          FROM    @output as o
                  LEFT OUTER JOIN status as es on
                      o.number = es.empid and
                      o.ccode = es.compcode and
                      @status = es.status
        ) om ON om.number = o.number

Note: I assume o.number is the primary key for @output