We ended up using CloverETL. Does what it says on the tin:
CloverETL® is data integration platform scaling from open source desktop to a commercial cloud cluster. It's a Java-based open platform that helps design, automate, and monitor data integration processes.
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您可以尝试Pentaho Data Integration（PDI，以前称为kettle）。
社区版是免费的。
它有一个类似于SSIS的GUI，经过简短的介绍后就很容易使用。
它是一个 Java 应用程序，并且使用原始的本机 postgresql JDBC 驱动程序 - 性能至少应与 SSIS 相当。
PDI CE 下载：http://sourceforge.net/projects/pentaho/files/
You can try Pentaho Data Integration (PDI, formerly, kettle).
Community Edition is free.
It has a GUI similar to SSIS, easy to use after a short introduction.
It is a Java application, and it uses original, native postgresql JDBC driver - performance should be at least comparable to SSIS.
PDI CE download: http://sourceforge.net/projects/pentaho/files/
我们最终使用了CloverETL。按照罐头上的说明进行操作：
We ended up using CloverETL. Does what it says on the tin: