20251104 (oracle)

src/programmers/sql/lv1/경기도에위치한식품창고목록출력하기.sql

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+SELECT WAREHOUSE_ID, WAREHOUSE_NAME, ADDRESS, NVL(FREEZER_YN, 'N') AS FREEZER_YN
+FROM FOOD_WAREHOUSE
+WHERE WAREHOUSE_NAME LIKE '창고_경기%'
+ORDER BY WAREHOUSE_ID ASC;

src/programmers/sql/lv1/상위n개레코드.sql

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+SELECT NAME
+    FROM ANIMAL_INS
+    ORDER BY DATETIME ASC
+    LIMIT 1;

src/programmers/sql/lv1/아픈동물찾기.sql

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+SELECT ANIMAL_ID, NAME
+    FROM ANIMAL_INS
+    WHERE INTAKE_CONDITION = "Sick"
+    ORDER BY ANIMAL_ID;

src/programmers/sql/lv1/이름이없는동물의아이디.sql

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+SELECT ANIMAL_ID
+    FROM ANIMAL_INS
+    WHERE NAME IS NULL
+    ORDER BY ANIMAL_ID ASC;

src/programmers/sql/lv1/조건에맞는회원수구하기.sql

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+-- 1번 풀이
+SELECT COUNT(USER_ID) AS USERS
+  FROM USER_INFO
+  WHERE AGE BETWEEN 20 AND 29
+  AND JOINED BETWEEN TO_DATE(20210101, 'YYYY-MM-DD') AND TO_DATE(20211231, 'YYYY-MM-DD');
+
+-- 2번 풀이
+SELECT COUNT(USER_ID) AS USERS
+  FROM USER_INFO
+  WHERE AGE BETWEEN 20 AND 29
+  AND TO_CHAR(JOINED, 'YYYY-MM-DD') BETWEEN '2021-01-01' AND '2021-12-31'
+
+  -- 3번 풀이
+SELECT COUNT(USER_ID) AS USERS
+  FROM USER_INFO
+  WHERE AGE BETWEEN 20 AND 29
+  AND TO_CHAR(JOINED, 'YYYY') = '2021';