在 DB2 9.7 之前，它们仅支持内联 SQL PL，这只是 SQL PL 的一个小子集。

Previous to DB2 9.7, they only supported inline SQL PL, which is a small subset of SQL PL.

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对于那些对内联s QL PL的内部原理真正感兴趣的读者，可以在本文参考资料一节中给出的参考资料中发现更详细的信息。

For those truly interested in the internal workings of inline SQL PL, more details can be found in the patents referenced in the resources section of this article.

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在内联s QL PL的上下文中，UNION用于以一种连续的方式派生出语句。

In the context of inline SQL PL UNIONs are used to drive statements in a sequential fashion.

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