Javascript 节点sql解析器，parser.astify（sqlquery）未返回精确输出

我正在尝试使用节点sql解析器解析nodejs中的sql查询

const {Parser} = require('node-sql-parser');
const parser = new Parser();
const ast = parser.astify(sqlQuery)

使用的sqluery如下所示

SELECT * FROM SUBSCRIPTION WHERE COLUMN_1 = 'NORM' AND COLUMN_2 IN ('11','12','13','14','15','16','17','18','42','43','44','45','101','102','103','104','128','129','130','131','159') AND (COLUMN_3 IS NOT NULL OR COLUMN_4 = 1) AND COLUMN_5 <> 1 AND (COLUMN_6 <> '8088' AND COLUMN_7 <>  '9088') 

其中我无法遍历左：[对象]。

---

有没有什么方法可以让我解析它，只得到一个操作符列表？

您将它记录为一个对象，这就是为什么您会在其中看到对象。您需要先对对象进行JSON.stringifyast，然后再进行安慰以查看所有内容

关于查找所有运算符，可以使用以下代码

const sqlQuery = "SELECT * FROM SUBSCRIPTION WHERE COLUMN_1 = 'NORM' AND COLUMN_2 IN ('11','12','13','14','15','16','17','18','42','43','44','45','101','102','103','104','128','129','130','131','159') AND (COLUMN_3 IS NOT NULL OR COLUMN_4 = 1) AND COLUMN_5 <> 1 AND (COLUMN_6 <> '8088' AND COLUMN_7 <>  '9088')";
const {Parser} = require('node-sql-parser');
const parser = new Parser();
const ast = parser.astify(sqlQuery)

function getOperator(obj, result = []) {
  let value;
  Object.keys(obj).forEach(key => {
    value = obj[key];
    if (value instanceof Object) {
      getOperator(value, result);
    } else if (key === "operator") {
      result.push(value);
    }
  });
  return result;
}

console.log(getOperator(ast));

// output will be -  ["AND", "AND","AND","AND","=","IN","OR","IS NOT","=","<>","AND","<>","<>"]

---

谢谢，这有助于我获得操作员列表，也有助于其他keyval

const sqlQuery = "SELECT * FROM SUBSCRIPTION WHERE COLUMN_1 = 'NORM' AND COLUMN_2 IN ('11','12','13','14','15','16','17','18','42','43','44','45','101','102','103','104','128','129','130','131','159') AND (COLUMN_3 IS NOT NULL OR COLUMN_4 = 1) AND COLUMN_5 <> 1 AND (COLUMN_6 <> '8088' AND COLUMN_7 <>  '9088')";
const {Parser} = require('node-sql-parser');
const parser = new Parser();
const ast = parser.astify(sqlQuery)

function getOperator(obj, result = []) {
  let value;
  Object.keys(obj).forEach(key => {
    value = obj[key];
    if (value instanceof Object) {
      getOperator(value, result);
    } else if (key === "operator") {
      result.push(value);
    }
  });
  return result;
}

console.log(getOperator(ast));

// output will be -  ["AND", "AND","AND","AND","=","IN","OR","IS NOT","=","<>","AND","<>","<>"]