Oracle用SQL打印日历
1.1 打印当月日历
SELECT MAX(DECODE(DOW, 1, D, NULL)) SUN,
MAX(DECODE(DOW, 2, D, NULL)) MON,
MAX(DECODE(DOW, 3, D, NULL)) TUE,
MAX(DECODE(DOW, 4, D, NULL)) WED,
MAX(DECODE(DOW, 5, D, NULL)) THU,
MAX(DECODE(DOW, 6, D, NULL)) FRI,
MAX(DECODE(DOW, 7, D, NULL)) SAT
FROM (SELECT ROWNUM D,
ROWNUM - 2 + TO_NUMBER(TO_CHAR(TRUNC(SYSDATE, \'MM\'), \'D\')) P,
TO_CHAR(TRUNC(SYSDATE, \'MM\') - 1 + ROWNUM, \'D\') DOW
FROM ALL_OBJECTS
WHERE ROWNUM <=
TO_NUMBER(TO_CHAR(LAST_DAY(TO_DATE(SYSDATE)), \'DD\')))
GROUP BY TRUNC(P / 7)
ORDER BY sun NULLS FIRST;
1.2 打印年历
SELECT CASE
WHEN (NEW_YWEEK = MIN(NEW_YWEEK)
OVER(PARTITION BY MON ORDER BY NEW_YWEEK)) THEN
MON_NAME
ELSE
NULL
END AS MONTH,
NEW_YWEEK AS YWEEK,
ROW_NUMBER() OVER(PARTITION BY MON ORDER BY NEW_YWEEK) AS MWEEK,
SUM(DECODE(WDAY, \'1\', MDAY, NULL)) AS SUN,
SUM(DECODE(WDAY, \'2\', MDAY, NULL)) AS MON,
SUM(DECODE(WDAY, \'3\', MDAY, NULL)) AS TUE,
SUM(DECODE(WDAY, \'4\', MDAY, NULL)) AS WED,
SUM(DECODE(WDAY, \'5\', MDAY, NULL)) AS THU,
SUM(DECODE(WDAY, \'6\', MDAY, NULL)) AS FRI,
SUM(DECODE(WDAY, \'7\', MDAY, NULL)) AS SAT
FROM (SELECT DAYOFYEAR AS EVERYDAY,
TO_CHAR(DAYOFYEAR, \'mm\') AS MON,
TO_CHAR(DAYOFYEAR, \'Month\') AS MON_NAME,
TO_CHAR(DAYOFYEAR, \'w\') AS MWEEK,
TO_CHAR(DAYOFYEAR, \'ww\') AS YWEEK,
CASE
WHEN (TO_CHAR(TO_DATE(&YEAR || \'0101\', \'yyyymmdd\'), \'d\') > \'1\') AND
(TO_CHAR(DAYOFYEAR, \'d\') <
TO_CHAR(TO_DATE(&YEAR || \'0101\', \'yyyymmdd\'), \'d\')) THEN
TO_CHAR(TO_CHAR(DAYOFYEAR, \'ww\') + 1, \'fm00\')
ELSE
TO_CHAR(DAYOFYEAR, \'ww\')
END AS NEW_YWEEK,
TO_CHAR(DAYOFYEAR, \'d\') AS WDAY,
TO_CHAR(DAYOFYEAR, \'dd\') AS MDAY
FROM (SELECT TO_DATE(&YEAR || \'0101\', \'yyyymmdd\') + LEVEL - 1 AS DAYOFYEAR
FROM DUAL
CONNECT BY LEVEL <=
TO_CHAR(TO_DATE(&YEAR || \'1231\', \'yyyymmdd\'),
\'ddd\')))
GROUP BY MON, MON_NAME, NEW_YWEEK;
1.3 打印某月日历
1.3.1 方法1
ALTER session set nls_language=\'SIMPLIFIED CHINESE\';
select to_char(everyday,\'ww\') as week,
sum(decode(to_char(everyday,\'dy\'),\'星期日
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