Hi,

Working mostly with MySQL type baseball-databank files, I haven't been
able to figure why sometimes SF's are zero and sometimes NULL in the
pre-1954 entries of the Batting table of the database.

Was about that time, 1954, that scoring rules changed? Sacrifice
Flys, and Sacrifice Hits, SF and SH, (since '54,) are excepted from
At-Bats, AB's... Prior they were included... Trans boundary counts
require different handling... I think it might be better to make the
"no entry default" a "0" i.e. a "zero" rather than a "NULL."

Ideas?

cactusmitch:)