pears.TempGetWeekAgo [iqx]

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====== pears.TempGetWeekAgo ======
<WRAP center round info>
Generated schema reference. Regenerate this page from the SQL unload; keep hand-maintained business notes in the narrative namespace.
</WRAP>

===== Original SQL =====
<code sql>
create function "pears"."TempGetWeekAgo"( 
  /* Application Maintained Function / Procedure - DO NOT EDIT*/
  in "StartYear" integer,in "StartWeek" integer,in "WeeksAgo" smallint ) 
returns integer
/* Function returns year and week in format: yyyyww */
begin
  declare "MaxWeek" smallint;
  if "WeeksAgo" > 52 then
    return null
  end if;
  if "WeeksAgo" < "StartWeek" then
    return("StartYear"*100+("StartWeek"-"WeeksAgo"))
  end if;
  select "numberofweeks" into "MaxWeek" from "payrollyear" where "yearnumber" = "StartYear"-1;
  if "maxweek" is null then
    set "maxweek" = 52
  end if;
  return("StartYear"-1)*100+("MaxWeek"-("WeeksAgo"-"StartWeek"))
end
</code>