whereNull 相当于 is null
whereNotNull相当于is not null$res = DB::table('lara')->whereNull('uname')->get();
dd($res);
$res = DB::table('lara')->whereNotNull('uname')->get();
dd($res);
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laravel中的whereNull和whereNotNull
whereNull 相当于 is null whereNotNull相当于is not null $res = DB::table('lara')->where...