[PR] Bq timestamp schema conversion [beam]

Wed, 03 Dec 2025 14:14:31 -0800 


claudevdm opened a new pull request, #36986:
URL: https://github.com/apache/beam/pull/36986

   1. Adds ability to map BQ TIMESTAMP(12) columns to either Timestamp.MILLIS, 
Timestamp.MICROS, Timestamp.NANOS or string for picosecond precision. This is 
used in the direct read path where a user specifies the precision of the 
timestamp that the read API returns. E.g. if a user reads with nanosecond 
precision, TIMESTAMP(12) columns will be mapped to beam 
LogicalTypes.Timestamp.NANOS etc.
   2. Adds conversion from BQ TableRow timestamps (formatted as UTC strings) to 
beam rows (where timestamp is a Timestamp logical type
   
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