Brent Wood wrote:
Lorenzo Thurman wrote:
I have three tables using date fields. I want to retrieve the oldest
date contained in the tables. Can someone show me an example of a
query that would do that?
You could write a custom function doing the same sort of thing, or
(perhaps more portable) use generic sqls & views like:
create view min_dates as
select min(date1) from table1as date_1
union
select min(date2) from table2 as date_1
union select min(date3) from table3 as date_1;
then either:
select min(date_1) from min_dates;
or
create view min_date as
select min(date_1) as min_date
from min_dates;
then just:
select min_date from min_date;
Cheers
Brent Wood
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