我们有一个 Teradata 逻辑来减去两个时间戳列,并考虑 HOUR(4) TO SECOND
我们必须在 Snowflake 中进行相同的转换才能开始相同的逻辑。已尝试以下设置,但无法正确填充数据以获得较小到较大的时间戳差异。
寻找合适的改变以获得等效的雪花结果:
SELECT TIMEDIFF(NANOSECOND,'2019-10-21 18:30:00.000','2019-09-10 00:40:00.950000') AS TIME_SEC, SIGN(TIME_SEC) AS SIGN1 ,
TO_CHAR(TIME_FROM_PARTS(0,0,0,TIME_SEC),'MI:SS.FF3') AS TIMESTAMP, round(TIME_SEC/3600000000000)::STRING as day1, CONCAT(DECODE(DAY1,'0',SIGN1||'0',DAY1),':',TIMESTAMP) ;
我们正在寻找
的等效版本select (TO_TIMESTAMP('2019-10-21 00:40:00.000000') - TO_TIMESTAMP('2019-10-21 18:30:00.00000')) HOUR(4) to SECOND;
select (TO_TIMESTAMP('2019-10-21 00:40:00.000000') - TO_TIMESTAMP('2019-10-21 18:30:00.00000')) DAY(3) to SECOND;