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...
dual UNION ALL SELECT 2 AS item_id, 'SQL' AS item_desc FROM dual ) SELECT item_id , item_desc , NULLIF(item_desc, 'ORACLE') AS new_item_desc FROM mydb item_desc 칼럼의 값이 'ORACLE'인 경우 NULL을 반환하고...
--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...
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(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...
SELECT empno, ename, sal FROM emp WHERE job = 'SALESMAN' UNION ALL SELECT null, null, sum(sal) FROM emp WHERE job = 'SALESMAN';
... 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...
... 7를 사용하여 WITH recursive cte AS ( SELECT cateName, cateCode, cateCodeRef, 1 AS level FROM goods_category WHERE cateCodeRef IS null UNION all SELECT p.cateName, p.cateCode, p.cateCodeRef, 1 + LEVEL AS level FROM goods...
... 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]
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...