SQL问题-ODBC连接

Question

At the moment we have a line that pulls the ship date of our orders from the system:

and o.actualshipdate like sysdate

Sysdate is the systematical date of all shipped orders on the current date.

How can we change it or adjust to make it show the orders shipped on the current systematical date but in a certain time frame:

The query works with the following line but we would have to adjust the date everyday. We would like to have this automated for the current date.

Below line needs to be adjusted:

and to_char(o.actualshipdate, 'YYYYMMDD HH24:MI') between '20171220 13:00' and '20171220 13:00'

Answer 1

In oracle, we have sysdate to provide the current system date. Check doc for sysdate

If you want a query to get the last 5 hrs shipment details the condition should look like

and shipmentdate >= (sysdate-(5/24))

If you want last 5 mins then

and shipmentdate >= (sysdate-(5/1440))

where 1440 = 24*60.

If you want for the last 1 day then

and shipmentdate >= sysdate-1

Hope you got the idea..

Please note that all this will work only if the shipmentdate is a date datatype column. Otherwise the query will change a little bit.

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Also you can use between if you want a time-frame for eg.

and shipmentdate between (sysdate-(10/24)) and (sysdate-(5/24))

And if your shipmentdate can have future records then for all the above conditions use

and shipmentdate between sysdate-x and sysdate