AngersZhuuuu opened a new pull request #33717:
URL: https://github.com/apache/spark/pull/33717
### What changes were proposed in this pull request?
Spark support type constructed string as day time interval such as
```
interval '1 day 2 hour'
```
And PGSQL support
```
cast('1 day 2 hour' as interval day)
cast('1 day 2 hour' as interval day to hour)
```
etc, spark can support this too.
### Why are the changes needed?
Support cast same type constructed string as day time interval
### Does this PR introduce _any_ user-facing change?
user can cast such as `1 day 2 hour` string as day time interval
### How was this patch tested?
Added UT
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