someone posted about sql lateral recently, which I had never heard of.
Here is my first use of it.

There are 2 files. A header and a detail. Header contains the BOL number.
The detail contains the ship date of all the lines of that BOL. ( go
figure )

Here is the sql that shows the BOL and its ship date:

select a.w1BOL, b.w2sdte
from w1mast a
, lateral ( select c.w2sdte
from w2mast c
where a.w1wacd = c.w2wacd and a.w1sid = c.w2sid
and c.w2sdte <> 0
fetch first row only ) b
where a.w1wacd = 'LAE' and a.w1BOL <> ' '

I figure without lateral I have to do a join with group by and MIN(w2sdte)
to eliminate the multiple detail rows. But with lateral I can use "fetch
first row only" which is clearer to read since it does exactly what I want
to be done.

-Steve

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