diff --git "a/\350\260\242\345\206\254\346\205\247/20230225--\346\225\260\346\215\256\345\272\223\345\210\206\351\241\265/homework.js" "b/\350\260\242\345\206\254\346\205\247/20230225--\346\225\260\346\215\256\345\272\223\345\210\206\351\241\265/homework.js"
index 8998498617e76f1f15978e028c04ea0895b721fc..5b57f62249217a34b009c906ef337cfaee7a047a 100644
--- "a/\350\260\242\345\206\254\346\205\247/20230225--\346\225\260\346\215\256\345\272\223\345\210\206\351\241\265/homework.js"
+++ "b/\350\260\242\345\206\254\346\205\247/20230225--\346\225\260\346\215\256\345\272\223\345\210\206\351\241\265/homework.js"
@@ -2,7 +2,7 @@
 //（可以的话一条sql,分组,使用占位符的形式去写）let mysql = require("mysql");
 let use = mysql.createConnection({host:"localhost",user:"root",password:"root",port:"3306",database:"user"});
 use.connect();
-查询
+// 查询
 let selectsql = "select * from db_user";
 use.query(selectsql,(err,data)=>{
     console.log(err);//显示null
@@ -17,20 +17,26 @@ use.query(insertSql,(err,data)=>{
     console.log(err);
     console.log(data);
 });
-分页
+// 分页
 let page = 3;
-// let pageTest = (page - 1) * 3;
 let limitsql = "select * from db_user limit ?,3";
 use.query(limitsql,[(page - 1) * 3],(err,data)=>{
     console.log(limitsql);
     console.log(err);
     console.log(data);
 });
-查询个数
+// 查询个数
 let sleAge = "18", sleAge2 = "45";
 let selsql = "select count(*) from db_user where age > ? and age < ? group by sex";
 use.query(selsql,[sleAge,sleAge2],(err,data)=>{
     console.log(err);
     console.log(data);
 });
+
+let selsql2 = "select count(*) from db_user ";
+use.query(selsql2,(err,data)=>{
+    console.log(err);
+    console.log(data);
+});
+
 use.end();
\ No newline at end of file