qbe

qbe

美 　英

• 网络昆士兰保险集团；示例查询(Query By Example)；按例查询

例句

This also points out a limitation of the QBE approach -- zero cannot effectively be used as a value to search on.

（这同样指出了QBE方法的一个缺点——不能够有效地使用0作为搜索值）。

A QBE approach would fail pretty badly for these types of queries because QBE does equality matches, not comparison.

QBE方法对于这类查询无能为力，因为QBE只能执行相等匹配，而无法进行比较查询。

I demonstrated data retrieval using db4o's QBE engine last time, but I'll quickly recap here.

上一次我使用了db4o的QBE引擎演示了数据检索，这里将快速回顾一下。

The user should only enter criteria against fields that are already in the QBE.

用户应该只针对QBE中已有的字段输入判据。

Last month, I talked about querying db4o using both native and QBE-style queries.

上个月，我谈到了使用原生和QBE样式的查询来查询db4o。

Extend the QBE API to include predicates.

扩展QBEAPI以包含谓词。

Insets a column into the QBE grid.

在查询设计视图中插入列。

The second option pollutes the simplicity of the QBE approach and leads to monstrosities like the one shown in Listing 9

第二种方法破坏了QBE方法的简单性，并且导致了如清单9所示的糟糕代码

What is apparent from Listing 7, however, is that its usage is arguably not much simpler than the basic QBE version shown already

然而，可以从清单7中很明显地看到，这种用法并没有比基本的QBE版本简单多少。