Oracle - Lead() over (partition by xxx order by xxx )
Lead() over()，主要做用是從某一個集合的當前cursor位置算起，按照某種順序將第下第n個位置的某一個字段值取出來，默認是往下1個位置。ci select incid_id,acty_id, lead(acty_ts) over(partition by incid_id order by acty_ts asc ) as closed_response from incid_acty
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相關文章
- 1. oracle row_number() over(partition by .. order by ..)和rank() over(partition by .. order by ..) 和dens
- 2. Rank() over (partition by……order by……）與dense_rank() over (partition by……order by……）的區別
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