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我想将 2 个或更多不同长度的金融时间序列对象分组。具体来说,我有FTS a和b,a比b短,如何得到一个时间序列c,使得c有两个子序列a和b,并且a中所有缺失的记录都用空值填充。谢谢你。
听起来像MERGE功能就是你要找的。