From: | Thomas Good <tomg(at)admin(dot)nrnet(dot)org> |
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To: | "PostgreSQL::SQL List" <pgsql-sql(at)postgreSQL(dot)org> |
Cc: | Herouth Maoz <herouth(at)oumail(dot)openu(dot)ac(dot)il> |
Subject: | date_arithmetic revisited |
Date: | 1999-07-30 14:15:32 |
Message-ID: | Pine.LNX.3.96.990730101114.4153A-100000@admin.nrnet.org |
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Lists: | pgsql-sql |
Herouth,
I am doing this:
psql tracker -qtc "select date_part('epoch', '$edate'::datetime);" > .arg1
psql tracker -qtc "select date_part('epoch', '$sdate'::datetime);" > .arg2
date1=`cat .arg1`;
date2=`cat .arg2`;
psql tracker -qtc "select ($date1 - $date2) / 60 / 60 / 24;"
to calculate intervals...this is census stuff.
How many Pt Days per bed, etc.
Is there a way/function that allows me to do simple date arithmetic,
ala, `SELECT $enddate - startdate;' ?
Cheers and thanks,
Tom
------- North Richmond Community Mental Health Center -------
Thomas Good MIS Coordinator
Vital Signs: tomg@ { admin | q8 } .nrnet.org
Phone: 718-354-5528
Fax: 718-354-5056
/* Member: Computer Professionals For Social Responsibility */
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