From d96955f80dd7da121a56852ef1540eabf0400dd1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Your=20Name=E8=B0=A2=E5=86=AC=E6=85=A7?=
 <you@example.com1498358273@qq.com>
Date: Wed, 1 Mar 2023 16:21:08 +0800
Subject: [PATCH 1/2] =?UTF-8?q?'=E7=AC=AC=E5=85=AD=E6=AC=A1=E4=BD=9C?=
 =?UTF-8?q?=E4=B8=9A'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../homework.js"                                    | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

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 89984986..ae95b0d4 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 +17,25 @@ 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
-- 
Gitee


From d99028be450685ba7b9f1910fad75089adf346df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Your=20Name=E8=B0=A2=E5=86=AC=E6=85=A7?=
 <you@example.com1498358273@qq.com>
Date: Wed, 1 Mar 2023 16:24:29 +0800
Subject: [PATCH 2/2] =?UTF-8?q?'=E7=AC=AC=E5=85=AD=E6=AC=A1=E4=BD=9C?=
 =?UTF-8?q?=E4=B8=9A'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../homework.js"                                                 | 1 +
 1 file changed, 1 insertion(+)

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 ae95b0d4..5b57f622 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"
@@ -38,4 +38,5 @@ use.query(selsql2,(err,data)=>{
     console.log(err);
     console.log(data);
 });
+
 use.end();
\ No newline at end of file
-- 
Gitee