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我正在尝试获取事务的已用时间。我需要将它解压缩到一个文件中。 我发现德比一些SQL在线不行,因为我想它:derby中两个日期之间的timestampdiff
ij> create table atab1(ts timestamp, i int, ts1 timestamp);
ij> insert into atab1 values(CURRENT_TIMESTAMP, 1, CURRENT_TIMESTAMP);
1 row inserted/updated/deleted
ij> insert into atab1 values(CURRENT_TIMESTAMP, 2, CURRENT_TIMESTAMP);
1 row inserted/updated/deleted
ij> select {fn TIMESTAMPDIFF(SQL_TSI_SECOND, ts1,ts)} as TS_DIFF from atab1;
TS_DIFF
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的atab1表的内容是:
TS |I |TS1
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2012-08-05 00:20:16.675 |1 |2012-08-05 00:20:16.675
2012-08-05 00:20:29.081 |2 |2012-08-05 00:20:29.081
声明:
select {fn TIMESTAMPDIFF(SQL_TSI_SECOND, ts1,ts)} as TS_DIFF from atab1;
将始终为0,因为ts1和ts的值相同
我应该如何调整t声明是否会显示ts和ts1的值之间的差异?