Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/15318
There are a few things are mixed.
First of all, when I checked in MySQL. It supports `select ts + interval 1
day, ts - interval 2 day from dates`.
Second, more important, as you see, `days` is the generated string from the
current Spark. I think we had better to change that into `day`.
Which version of Hive do you mean? For `INTERVAL`, Spark 1.6.2 and hive 1.2
does not support that.
BTW, I'm willingly to fix anything. :)
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