为什么这段代码在PostgreSQL中失败，以及如何修复它?它是Postgres SQL引擎缺陷吗?

I've been working on text parsing task when I found strange Postgres behavior. My original code exposing strange error was written in Java with JDBC connectivity for PostgreSQL (v8.3.3 and v8.4.2 tested), here is my original post: I've been working on text parsing task when I f