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6 changes: 6 additions & 0 deletions 있었는데요없었습니다/sql/20221210/solution.sql
Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
SELECT INS.ANIMAL_ID, INS.NAME
FROM ANIMAL_INS AS INS
LEFT JOIN ANIMAL_OUTS AS OUTS
ON INS.ANIMAL_ID = OUTS.ANIMAL_ID
WHERE INS.DATETIME > OUTS.DATETIME
ORDER BY INS.DATETIME;