This is a discussion on Re: update with clause first within the Informix forums, part of the Database Server Software category; --> And then of course it bounces so I have to wait until I get home to send it. This ...
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| And then of course it bounces so I have to wait until I get home to send it. This whole spam thing is beginning to p*ss me off. Not only do I have to wade through miles of spam and delete the obvious viruses, but it has reached a point where half of the mail I send or half of the mail which is sent to me winds up in a spam collection bucket somewhere - some of it never to be seen again - because it is suspect or the person you are replying to has chosen to protect themselves from spam harvesting like Arnaud here. We need to go after the spammers. Castration is too good for them, perhaps drawing and quartering might be better. They have ruined the internet. =============================== Arnaud, Replying from work, via webmail, so the reply doesn't work as well as my normal mail reader. Look for "-" in front of where I wrote. Sorry - should have been more careful. The rownum is, of course, not there in Informix, but you could add a serial column to the table entitled 'rownum', and it will serve the same function. Jack Parker" wrote > > Specific to your question - if state is a valid column, the same methodology > should work. Well i was pretty sure it was possible, bt i don't figure out on how to code this .... The rownum need to be replace... but i don't know how to deal with. Maybe with a "first" clause, but i cannot succeed in having correct code. >But if you are trying to update a large table in Informix - > why slow yourself down with Oracle-OLTP methodology? I suggest you read: > http://www-106.ibm.com/developerwork...502parker.html > Wow ! A must read... (when i look at our performances... :-/ ) But in fact the problem is not only Database answer times based. But processes too... If i read to quickly the database (that contains data for query ) Ours processes are going to use 100% machine time for a while.... ==== Quick description: Our processes read a table and each rows contains data that permit to launch an action (or many actions) Then it can take for 1s to 5s working time (or more) with accessing or not to the database. So if i read 1000 at the same time: it can take for 15 min to more than an hour to complete the Job. ==== - can you describe what the application does? Maybe I could offer a suggestion if I understood it better. > Although I've only advertised it about 1200 times on this group - OTOH, I > wrote it so I wouldn't have to walk through it 1200 times. sorry for that.... and thk you for taking time to post it once again ...and maybe again and again and again ..... - I just meant that I've probably flooded the market - people are probably tired of my mentioning the article. Thk you for your answer, i will try to find how to write this query. Must be easy , but at this point .... i do not know Thk you once again for the article ! Arnaud PS: Just a little request ... Is there a lot of user of ESQLC ?? - At one time it was fairly popular, I don't see a lot of people using it anymore. Regards (a bientot), Jack Parker sending to informix-list sending to informix-list |