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Tip # 40 - Lowest and Highest Dates

To make the date range possible move as you adjust your PFCMARK to indicate the correct century, you can program the highest and lowest possible dates and make use of the PFCMARK data to do that logic.

Processing Sample

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If:

Then: declare highest_date(10,mdyy/) 'highest date understood in dates formatted without a century

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If:

Then: declare lowest_date(10,mdyy/) 'oldest date understood in dates formatted without a century

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If:

Then: declare PFCMARK(3,.0) 'set for current PFCMARK or default if none is found

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If:

Then: PFCMARK=getenv("PFCMARK")

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If: PFCMARK eq ""

Then: PFCMARK="50" 'set default if PFCMARK is not set

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If:

Then: highest_date="12/31/" {mod(PFCMARK + "99" , "100")

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If:

Then: lowest_date=""01/01/" { PFCMARK

Put this programming in your system as a template and then offer defaults when asking for highest and lowest dates:

input popup sd(10,mdyy/,g) "Start Date (mm/dd/yyyy) > " default lowest_date

input popup ed(10,mdyy/,g) "End Date (mm/dd/yyyy) > " default hightest_date

Written by Nancy Palmquist at nlp@vss3.com