... that you experts I hope can crack like a digestive
biscuit...

how does one update, or merge or whatever is right technical
term for it - a my.table from my.another table (both are
schematically identical, no foreign keys, one primary key) but..
does it a way so when there is a duplicate only NULLs in
my.table get updated/replaced with proper values from
my.another table?

many thanks, specially for actual syntax hints.
L.

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