solve 없어진 기록 찾기 with sql

Author: dolong2

없어진 기록 찾기/solution.sql

@@ -0,0 +1,5 @@
+SELECT outs.animal_id, outs.name 
+from animal_outs as outs
+left outer join animal_ins as ins
+on ins.animal_id = outs.animal_id
+where ins.animal_id is null;