diff --git "a/\345\255\231\346\237\217\345\263\273/2022309/crypto.js" "b/\345\255\231\346\237\217\345\263\273/2022309/crypto.js"
new file mode 100644
index 0000000000000000000000000000000000000000..e2b80c6069cfe56fdcb28d3c7de183eccf6e63d3
--- /dev/null
+++ "b/\345\255\231\346\237\217\345\263\273/2022309/crypto.js"
@@ -0,0 +1,49 @@
+let mysql=require('mysql');
+let crypto=require('crypto');
+const { log } = require('console');
+
+let connection = mysql.createConnection({
+    host:'localhost',
+    port:'3306',
+    password:'123456',
+    user:'root',
+    database:'study'
+});
+
+//查询
+let sql="select * from user";
+query(sql,function(result){
+    console.log(result);
+})
+
+//加密
+let md5=crypto.createHash('md5');
+let ps=`123456`;
+md5.update(ps);
+let ps_md5=md5.digest('hex')
+//插入数据
+// connection.connect()
+// for (let i = 0; i < 200000; i++) {
+//     let sql=`insert into user (name,password) values ('大毕兜${i}','${ps_md5}')`
+//     connection.query(sql,function(result){
+//         if(result===null){
+//             // console.log('插入数据成功');
+//         }
+//     })
+// }
+
+// connection.end()
+
+
+function query(sql, callback) {
+    connection.connect();
+    connection.query(sql, function (err, result) {
+        if (err) {
+            console.log(err.message);
+            return;
+        }
+        callback(result)
+    })
+    connection.end();
+}
+