oracle - Last 30 days of data

Question

I cant figure out a where clause to get me the last 30 days of data from a table

Select DATE_ADDED
From INFORMENT.PRODUCT_OFFER_PURCHASE
WHERE ??????-30

I have tried WHERE NFORMENT.PRODUCT_OFFER_PURCHASE.DATE_ADDED > sysdate-30 and that doesn't get me anywhere.

score 3 · Accepted Answer

一些选项：

date_added >= trunc(sysdate)-30

date_added >= sysdate-30

date_added >= add_month(sysdate,-1)

date_added >= add_month(trunc(sysdate),-1)

score 0 · Accepted Answer

我认为它只是类型错误

Select DATE_ADDED
From INFORMENT.PRODUCT_OFFER_PURCHASE
WHERE 
INFORMENT.PRODUCT_OFFER_PURCHASE.DATE_ADDED > sysdate-30

2 回答 2