Simple LINQ to SQL expression output to results view.
输出到结果视图的简单LINQ toSQL表达式，如下所示。
In general, each value in the enumeration can be an arbitrary scalar SQL expression.
一般情况下，枚举中的每一个值都可以成为任意标量SQL表达式。
The VALUES... into statement allows an SQL expression to be executed and to return the result into variables.
VALUES…into语句允许执行SQL表达式，并将结果返回至变量。
Rather, just the expression resulting from the SQL expression template should be used from the nested measures.
相反，应该只使用嵌套度量的SQL表达式模板产生的表达式。
Let's first start with an example of generating the SQL expression for a measure that does not reference any other measures.
我们先给出为一个度量产生SQL表达式的示例，这个度量没有引用其他任何度量。
For each of the measures that are to be in the query, add the SQL expression generated for the measure as a column in the SELECT list.
对于查询中的每个度量，将度量的SQL表达式添加到SELECT列表中作为列。
When generating SQL expressions for measures that reference other measures, the aggregation function might not be used to form the SQL expression for the nested measures.
如果一个度量引用其他度量，那么在为它产生SQL表达式时，不能使用聚合函数来为嵌套的度量产生SQL表达式。
By using content based routing, it is easy to evaluate an SQL expression against the contents of a message and take a decision whether the subscriber really need to get the message or not.
通过使用基于内容的路由，可以很方便地针对消息的内容评估SQL表达式，从而决定订阅者是否真的需要获得消息。
By using content based routing, it is easy to evaluate an SQL expression against the contents of a message and take a decision whether the subscriber really need to get the message or not.
通过使用基于内容的路由，可以很方便地针对消息的内容评估SQL表达式，从而决定订阅者是否真的需要获得消息。
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