我想知道是否有人在 SQL 中具有给定初始日期、天数、频率和最终日期的函数来计算下一个匹配的天数和月份？
例如
@initialdate=20130101
@finaldate=20133112
@daynumber=14 --that means every 14
@frecuency=2
然后查询生成下一个日期，如下所示：
20130114
20130314
20130514
20130714
20130914
20131114
如果解决方案是 CTE，则更好，如果在 2 月 28 日至 29 日验证并且天数为 31 时会更好。
这是我正在处理的查询，它即将在给定频率类型、频率和取决于频率类型的发生率的情况下生成日期。
Type of Frec Frecuency Ocurrence
DI (Dairy) 1 (Every 1 day) na
DI (Dairy) 2 (Every 2 day) na
..
DI (Dairy) 6 (Every 6 day) na
SE (Weekly) 1 (Every 1 week) 1 (for Monday)
SE (Weekly) 2 (Every 2 weeks) 3 (for Wednesday)
SE (Weekly) 3 (Every 3 weeks) 5 (for Friday)
SE (Weekly) 4 (Every 4 weeks) 2 (for Tuesday)
MD (Monthly by day) 1 (Every 1 month) 1 (for first day of the month)
MD (Monthly by day) 1 (Every 1 month) 2 (for last day of the month)
...
MD (Monthly by day) 11 (Every 11 months) 2 (for last day of the month)
MF (Monthly by date) 1 (Every 1 month) 14 (for every 14 of the month)
...
MF (Monthly by date) 2 (Every 2 months) 30 (for every 30 of the month)
MF (Monthly by date) 3 (Every 3 months) 31 (for every 31 of the month)