I want to select data from last 3 days partition in oracle

Question

In Oracle SQL, It is possible to get data from 3 days partitions only. For example, If I run SQL on 15-Aug-2019, My SQL should only look on 13,14,15 Day partitions or If I run SQL on 16-Aug-2019, My SQL should only look on 14,15,16 Day partitions.

TIA

Answer 1

I think that you are just looking for the following where clause:

where my_date_col >= trunc(sysdate) - 2 and my_date_col < trunc(sysdate) + 1

Where date_col is the column that holds the date that you want to filter.

For current sysdate December 30th at 10h22, trunc(sysdate) gives you December 30th at midnight, and trunc(sysdate) - 2 produces December 28th at midnight.