Cannot edit MySQL table from Excel -


i've got table in mysql non-null primary key field. i've selected within excel file option edit database table. when entering data cell , selecting "commit" changes, error , change not go through.

i've tried deleting tab , trying again, or trying new excel file, , neither approach works.

when looking @ sql string sent database confusing me. essentially, statement standard 

update db_name.table_name  set 'change_col' = "new_val" <where clause>

except <where clause> nuts. first operand i'd like, i.e. equality of primary key on value corresponding edited row, huge mess of nested conjunctions , disjunctions on other fields follows. , isn't might expect. example, i've got trans_num field , on edited row value 22. reason <where-clause> contains 

and ((22 null , `trans_num` null) or `trans_num`=22)

which quite bizarre.

i haven't seen questions online, i'm not sure causing behavior or how can fixed.


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