RE: Rollback per transaction %:73 %?

• *From*: Tanel Poder <tanel.poder.003_at_xxxxxxx>
• *To*: "'Wiktor Moskwa'" <wmoskwa_at_xxxxxxxxxxxx>
• *Date*: Fri, 08 Aug 2008 19:22:47 +0800

Hi Wiktor,

In theory you should choose the approach based on which case occurs mostly - if you are expecting 99% of inserts to fail as corresponding rows already exist in database (and need to be updated instead) then better start with update and if 0 rows found then insert. And vice versa, if you expect to insert 99% of rows and only update 1% then better start with insert (and if it fails then update).

• In theory, you sould choose MERGE in such cases, no?

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