sql - Error when using 2 (NOT LIKE) wildcards -


i can't seem figure out why code isn't printing out right information.

select firstname customer firstname not "p%" or firstname not "t%";

the table not show names starting on p or t if remove 1 of conditions (p or t), , table show names starting p or t if change "not like" "like" on both. moment use 2 "not like" conditions shows names, , neither of not conditions execute.

you need use , instead of or. not p or not t true everything; because 1 of statements true. want them both true, need and.


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