尽管代码生成器可以理解一点儿目标语言的知识，但是它们通常都不是完整的语法分析器，不重新编写一个完整的编译器是无法全面考虑目标语言的。

While code generators understand a little bit about the target language, they are usually not full parsers and cannot take the target language into account without rewriting a complete compiler.

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前者含语言预处理、SQL语句和过程语句分析，及中间代码生成等。

The former contains language pre-compiling, SQL statements and process statements analyzing and creating the intermediate code.

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