From b14403bcb9d443ef1012ed5df676a1efc21cf909 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E9=B8=BF=E5=A5=87?=
 <10465832+lhqong@user.noreply.gitee.com>
Date: Thu, 23 Feb 2023 03:06:57 +0000
Subject: [PATCH] fixed 93b7e05 from
 https://gitee.com/lai123/class6nodehomework/pulls/32 5465
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Signed-off-by: 刘鸿奇 <10465832+lhqong@user.noreply.gitee.com>
---
 liu.js | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 liu.js

diff --git a/liu.js b/liu.js
new file mode 100644
index 0000000..b45b2de
--- /dev/null
+++ b/liu.js
@@ -0,0 +1,49 @@
+var mysql      = require('mysql');
+var connection = mysql.createConnection({
+  host     : '127.0.0.1',
+  user     : 'root',
+  password : 'root',
+  database : 'student'
+});
+connection.connect();
+let page=1;
+let pageSize=2;
+console.log(new Date().toLocaleString().replace("/","-").replace("/","-"));
+let sql = "select * from student limit " + (page - 1) * pageSize + "," + pageSize;
+connection.query(sql, (err, data) => {
+ 
+  console.log(data);
+ 
+});
+connection.query('SELECT count(*) from student', function (error, results, fields) {
+  if (error) throw error;
+  console.log("查询结果学生总数是");
+  console.log(results);
+});
+connection.query('select count(*) from student where stu_six="男"',function (error, results) {
+  if (error) throw error;
+  console.log("查询结果是男的");
+  console.log(results);
+});
+connection.query('select count(*) from student where stu_six="女"',function (error, results) {
+  if (error) throw error;
+  console.log("查询结果是女的");
+  console.log(results);
+});
+connection.query('select count(*) from student where stu_age<18',function (error, results) {
+  if (error) throw error;
+  console.log("查询结果小于18是");
+  console.log(results);
+});
+connection.query('select count(*) from student where stu_age>=18 and stu_age<45',function (error, results) {
+  if (error) throw error;
+  console.log("查询结果大于等于18，小于45是");
+  console.log(results);
+});
+connection.query('select count(*) from student where stu_age<45',function (error, results) {
+  if (error) throw error;
+  console.log("查询结果大于45是");
+  console.log(results);
+});
+
+connection.end();
\ No newline at end of file
-- 
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