Drew Brees has the most career passing touchdowns, with 549 touchdowns.

most all-time passing touchdowns in the nfl' union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null;--
Interpreted as:
most all-time passing touchdowns by a player in the NFL' union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null;--

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