private String parseInsertColumn(IoTDBSqlParser.InsertColumnContext columnContext) {
    return parseNodeString(columnContext.getText());
  }
Parse time range (startTime and endTime) in group by time.

@throws SemanticException if startTime is larger or equals to endTime in timeRange
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/parser/ASTVisitor.java