语法分析根据词法分析器提供的语法单元构造查询的语法树。

Lexic analysis constructs query semantic tree according to the semantic unit which lexic analyzer provides.

youdao

语法分析根据词法分析器提供的语法单元构造查询的语法树。

Lexic analysis constructs query semantic tree according to the semantic unit which lexic analyzer provides.

youdao