您可以看一下 sqlrelay，它具有路由和过滤查询的能力。
http://sqlrelay.sourceforge.net/sqlrelay/router.html
如果你想重写我认为 sqlrelay 不足的查询。
否则，您可能会研究 PostgreSQL 的规则，这些规则可用于替换或重写查询：
http ://www.postgresql.org/docs/8.4/interactive/rules.html
You might take a look at sqlrelay which has the ability to route and filter queries.
If you want to rewrite the queries I think sqlrelay falls short.
You might otherwise look into PostgreSQL's rules, which can be used to substitute or rewrite queries:
http://www.postgresql.org/docs/8.4/interactive/rules.html
您可以参考以下postgresql-aync驱动程序项目。
https://github.com/mauricio/postgresql-async
You can refer to the following postgresql-aync driver project.
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您可以看一下 sqlrelay，它具有路由和过滤查询的能力。
http://sqlrelay.sourceforge.net/sqlrelay/router.html
如果你想重写我认为 sqlrelay 不足的查询。
否则，您可能会研究 PostgreSQL 的规则，这些规则可用于替换或重写查询：
http ://www.postgresql.org/docs/8.4/interactive/rules.html
You might take a look at sqlrelay which has the ability to route and filter queries.
http://sqlrelay.sourceforge.net/sqlrelay/router.html
If you want to rewrite the queries I think sqlrelay falls short.
You might otherwise look into PostgreSQL's rules, which can be used to substitute or rewrite queries:
http://www.postgresql.org/docs/8.4/interactive/rules.html
您可以参考以下postgresql-aync驱动程序项目。
https://github.com/mauricio/postgresql-async
You can refer to the following postgresql-aync driver project.
https://github.com/mauricio/postgresql-async