# Detailed Definitions of Lexical and Grammar
Please read the lexical and grammar description files in our code repository:
Lexical file: antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/IoTDBSqlLexer.g4
Grammer file: antlr/src/main/antlr4/org/apache/iotdb/db/qp/sql/IoTDBSqlParser.g4
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