The syntactic analyzer makes lexical analysis and syntactic analysis on the query, and sets up syntactic tree from the structure of the query.
语法分析器完成词法分析和语法分析，建立具有多维语法结构的语法树。
The syntactic analyzer makes lexical analysis and syntactic analysis on the query, and sets up syntactic tree from the structure of the query.
语法分析器完成词法分析和语法分析，建立具有多维语法结构的语法树。
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