The usage of SQL Table Functions allows you to push procedural logic into the FROM clause of a query.

sql表函数的使用使您可以将过程性逻辑放入到查询的from子句中。

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But traditionally they have been implemented in procedural logic, buried deep in application programs.

但在传统上，业务规则是在过程逻辑中实现的，并深埋在应用程序中。

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It should be called at the very beginning of the procedural logic, right after the variable declarations.

应该在过程逻辑的开始部分、紧接变量声明之后的地方调用该过程。

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