hi
i have a two table
select*from phon
phone ASA
111 james
222 stivens
333 null
444 null
select*from t2
phone ASA
111 james
222 stivens
333 jacke
444 lee
select*from phon where ASA is null
333 null
444 null
how i make update
table phon column ASA only ASA is null
after update table phon
for example
select*from phon
phone ASA
111 james
222 stivens
333 jacke
444 lee