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Snowflakeuses the word "wallclock" (I like that, but didn't make use of it) for the description of theirNO TIME ZONEtype: TIMESTAMP_NTZ internally stores “wallclock” time with a specified precision. All operations are performed without taking any time zone into account. PostgreSQLwiki als...
When an INTEGER value is cast directly to TIMESTAMP_NTZ, the integer is treated as the number of seconds since the beginning of the Linux epoch, and the local time zone is not taken into account. However, if the INTEGER value is stored inside a VARIANT value, for example as shown below...
CREATE CAST (bigint as timestamp without time zone) WITH FUNCTION microsecond_to_timestamp_ntz(bigint) AS IMPLICIT;
For nanoseconds, scale = 9. Default: 0Returns The data type of the returned value is one of the TIMESTAMP data types. By default, the data type is TIMESTAMP_NTZ. You can change this by setting the session parameter TIMESTAMP_TYPE_MAPPING. If the input is NULL, then the result is NUL...
How was this patch tested? Added a new test case for testing the timestamp_ntz data type. Tested on DBR 15.4 LTS to ensure no binary compatibility issues were introduced. Did this PR include necessary documentation updates?