Add capability to partition tables by the full spectrum of supported capabilities #1072
Description
As noted in this Issue/PR, this library was found to be unable to partition according to a specific granularity, despite that being part of the BigQuery (BQ) API.
During investigation into the above Issue, it was found that the library was missing additional capabilities as reflected this matrix.
Add capabilities noted in the matrix to partition tables by the full spectrum of supported BQ capabilities.
| Column Data Type | HOUR | DAY | MONTH | YEAR |
|---|---|---|---|---|
| DATE | N/A | Fixed by #1057 | via DATE_TRUNC | via DATE_TRUNC |
| DATETIME | Incorrectly implemented via DATE_TRUNC TODO: use DATETIME_TRUNC | Incorrectly implemented via DATE_TRUNC TODO: use DATETIME_TRUNC | Incorrectly implemented via DATE_TRUNC TODO: use DATETIME_TRUNC | Incorrectly implemented via DATE_TRUNC TODO: use DATETIME_TRUNC |
| TIMESTAMP | via TIMESTAMP_TRUNC | via TIMESTAMP_TRUNC | via TIMESTAMP_TRUNC | via TIMESTAMP_TRUNC |
| _PARTITIONDATE | N/A | via DATE_TRUNC | via DATE_TRUNC | via DATE_TRUNC |
| _PARTITIONTIME | Not currently implemented TODO: USE TIMESTAMP_TRUNC | Not currently implemented TODO: USE TIMESTAMP_TRUNC | Not currently implemented TODO: USE TIMESTAMP_TRUNC | Not currently implemented TODO: USE TIMESTAMP_TRUNC |