FLOOR postgres DATETIME_DIFF to match BigQuery#2059
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Fractional epoch ratios diverge from BQ integer DATETIME_DIFF (MIT-LCP#1549). Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
DATETIME_DIFFreturned fractional epochs; BigQuery truncates (DATETIME_DIFFimplementation varies between postgres and bigquery #1549)FLOORin iii/ivpostgres-functions.sqlTest plan
DATETIME_DIFFminute/hour diffs match BQ for same timestampsFixes #1549
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