SELECT column_name(s) FROM table1 UNION ALL SELECT column_name(s) FROM table2; -> 두가지가 합쳐져서 행으로... 없음에는 null 허용 안함 한글 나오려면 DEFAULT CHARACTER SET UTF8 를 붙여준다. person id가 0(null)...
△배우 자주 사용되니 사용법 기억해둬야 IS NULL 연산자 NULL 아닌 값 출력 집합 연산자 UNION, UNION ALL, MINUS, INTTERSECT 각 SELECT문이 출력하려는 열 개수와 각 열의 자료형이 순서별로 일치해야...
(SALES_DATE, 'YYYYMM') = '202203' UNION ALL SELECT SALES_DATE , PRODUCT_ID , NULL AS USER_ID , SALES_AMOUNT FROM OFFLINE_SALE WHERE TO_CHAR(SALES_DATE, 'YYYYMM') = '202203' ) ORDER BY SALES_DATE, PRODUCT_ID, USER...
UNION ALL : 합집합 ! 중복인정! 집계함수란? 전체합계와 동시에 부분별로 소계를 같이... SELECT 고객 CASE WHEN 수량 <= 100 THEN 'B' WHEN 수량 <= 250 THEN 'A' ELSE 'S' END AS등급 FROM 주문수량 WHERE 1...
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--6번 select * from emp where comm is null and MGR is not null and job = 'MANAGER' and ename not like '_L%' union all select * from emp where comm is null and MGR is not null and job = 'CLERK...
아래 쿼리를 사용하여(내 실제 쿼리에서 단순화): select a,count(distinct b),sum(a) from (select 1 a,1 b union all select 2,2 union all select 2,null union all select 3,3 union all select 3,null...
... UNION ALL 집합연산 사용 시 동일 컬럼 갯수, 컬럼 타입을 넣어줘야 되는것과 같은 이치.. 구지... SELECT search_condition, CASE WHEN search_condition IS NULL THEN ' ' END FROM user_constraints; 단 NULL로 표기가 안되지만...
... ㅠㅠ 예를 들어 rpt_name asst serial_no 1 RPT_ITM_MAT NULL DD2100941 이 결과값을 rpt_name asst serial_no 1... 됩니다 select * from ~~~~~ union all select * from ~~~~~ union all select * from ~~~~~ union all select * from ~~~~~
... UNION ALL? 활용방법? 일반 리스트 쿼리입니다. SELECT * FROM ( SELECT ROW_NUMBER() OVER (ORDER BY NO) AS NUM, NO... THEN NULL ELSE UDATE END AS UDATE, HIT FROM (SELECT NO, DIF, TITLE, CONTENTS, ID, "DATE" AS IDATE, UDATE, HIT FROM SBOARD...
... INTERVAL 1 DAY) AND agencyCd like '4%' union all Select '400', 0, 0 union all Select '401', 0, 0 union all Select '402', 0, 0 union all Select '403', 0, 0 union all Select '404', 0, 0 ) GROUP BY aaaaaCd ORDER BY aaaaaCd asc ; [CODE]
... self join 하기도 그렇고, 반복문을 써야하나요?/ 1번 select max(a1) from (select 5 as a1 from dual union all select 4 as a2 from dual union all select null as a3 from dual union all select 0 as a4 from dual union...
with with_tab (last_name, emp_id, mgr_id, sum_salary) as( select last_name, employee_id, manager_id, salary from employees where manager_id is null union all select a.last_name, a.employee_id, a.manager_id, a.salary + b.sum_salary from...