Re: Pass column name in preparedstatement
От | Oliver Jowett |
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Тема | Re: Pass column name in preparedstatement |
Дата | |
Msg-id | 42127EEC.3000502@opencloud.com обсуждение исходный текст |
Ответ на | Re: Pass column name in preparedstatement (Antony Paul <antonypaul24@gmail.com>) |
Ответы |
Re: Pass column name in preparedstatement
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Список | pgsql-jdbc |
Antony Paul wrote: > In 7.3.3 is there any use in using PreparedStatement since the columns > may change for each query. It depends on your application; are there non-column-name parameters? If so, using PreparedStatement still gives you the benefit that you do not have to escape those parameters by hand. Under 7.3.x there's no real performance benefit to reusing PreparedStatements, as the v3 protocol (supporting server-side query parameterization and reuse) was only introduced in 7.4. Under 7.4 or 8.0, there is some scope for improved performance if you reuse PreparedStatements. As your query strings are changing, you may want to have a cache to preserve a PreparedStatement for frequently used queries. You really should upgrade if you're still using 7.3.3, at least to the latest 7.3.x. -O
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