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Rev

But my datenum not the primary key.

Mokus
– Mokus

2011-05-17 11:49:31 +00:00
Commented May 17, 2011 at 11:49
So in my case what is the solution, I tried this one, without any solution:INSERT INTO forwind.aggregateddata (datenum,Timestamp,Min_F1_baro_20_) VALUES ('1','2','3') ON DUPLICATE KEY UPDATE datenum=datenum;

Mokus
– Mokus

2011-05-17 11:57:20 +00:00
Commented May 17, 2011 at 11:57
1

is datenum supposed to be unique? if yes, than add a unique index to it (if not already added) Then it will work. Refer dev.mysql.com/doc/refman/5.1/en/alter-table.html for how to ad UNIQUE indexes

Jai
– Jai

2011-05-17 14:01:05 +00:00
Commented May 17, 2011 at 14:01
now I defined the datenum as unique, and it's work fine, thanks

Mokus
– Mokus

2011-05-18 08:21:58 +00:00
Commented May 18, 2011 at 8:21
1

Just a link, maybe give an answer.

Andrew
– Andrew

2016-01-15 21:48:36 +00:00
Commented Jan 15, 2016 at 21:48

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