Sql den takvim yapmaca...

Aşağıdaki kodla sqlde yıllık takvim elde edebilirsiniz. Sql düşündüğünüzden daha güçlü olabiliyor bazen...


SELECT LPAD (MONTH, 20 - (20 - LENGTH (MONTH)) / 2) MONTH, "Sun", "Mon",
"Tue", "Wed", "Thu", "Fri", "Sat"
FROM (SELECT TO_CHAR (dt, 'fmMonthfm YYYY') MONTH,
TO_CHAR (dt + 1, 'iw') week,
MAX (DECODE (TO_CHAR (dt, 'd'),
'1', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Sun",
MAX (DECODE (TO_CHAR (dt, 'd'),
'2', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Mon",
MAX (DECODE (TO_CHAR (dt, 'd'),
'3', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Tue",
MAX (DECODE (TO_CHAR (dt, 'd'),
'4', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Wed",
MAX (DECODE (TO_CHAR (dt, 'd'),
'5', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Thu",
MAX (DECODE (TO_CHAR (dt, 'd'),
'6', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Fri",
MAX (DECODE (TO_CHAR (dt, 'd'),
'7', LPAD (TO_CHAR (dt, 'fmdd'), 2)
)
) "Sat"
FROM (SELECT TRUNC (SYSDATE, 'y') - 1 + ROWNUM dt
FROM ALL_OBJECTS
WHERE ROWNUM <=
ADD_MONTHS (TRUNC (SYSDATE, 'y'), 12)
- TRUNC (SYSDATE, 'y'))
GROUP BY TO_CHAR (dt, 'fmMonthfm YYYY'), TO_CHAR (dt + 1, 'iw'))
ORDER BY TO_DATE (MONTH, 'Month YYYY'), TO_NUMBER (week);