sqlServer 中使用sql语句实现固定分页功能
package javabean; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import dao.ConDB; import entity.Product; import impl.ProductImp; public class DealProduct extends ConDB implements ProductImp { int count =4;
package javabean;import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import dao.ConDB;
import entity.Product;
import impl.ProductImp;
public class DealProduct extends ConDB implements ProductImp {
int count =4;// 确定每页显示几行数据
/**
*查询分页信息
*page 是前台的当前页
**/
public ListList
Product product=null;
int rowBegin =0;
if(page>1){
rowBegin = (page-1)*count;
}
try {
conn = getConDB();
String sql ="select top "+count+" * from [company].[dbo].[PRODUCT] where productId not in(select top "+rowBegin+" productId " +
"from [company].[dbo].[PRODUCT] order by price desc) order by price desc";
pst = conn.prepareStatement(sql);
rs = pst.executeQuery();
while(rs.next()){
product = new Product();
product.setProductID(Integer.parseInt(rs.getString(1)));
product.setSerialNumber(rs.getString(2));
product.setName(rs.getString(3));
product.setBrand(rs.getString(4));
product.setModel(rs.getString(5));
product.setPrice(Float.parseFloat(rs.getString(6)));
product.setPicture(rs.getString(7));
product.setDescription(rs.getString(8));
list.add(product);
}
} catch (SQLException e1) {
e1.printStackTrace();
}finally{
closeAll(conn, pst, rs);
}
return list;
}
}

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The import steps are as follows: Copy the MDF file to SQL Server's data directory (usually C:\Program Files\Microsoft SQL Server\MSSQL\DATA). In SQL Server Management Studio (SSMS), open the database and select Attach. Click the Add button and select the MDF file. Confirm the database name and click the OK button.

For objects with the same name that already exist in the SQL Server database, the following steps need to be taken: Confirm the object type (table, view, stored procedure). IF NOT EXISTS can be used to skip creation if the object is empty. If the object has data, use a different name or modify the structure. Use DROP to delete existing objects (use caution, backup recommended). Check for schema changes to make sure there are no references to deleted or renamed objects.

HQL and SQL are compared in the Hibernate framework: HQL (1. Object-oriented syntax, 2. Database-independent queries, 3. Type safety), while SQL directly operates the database (1. Database-independent standards, 2. Complex executable queries and data manipulation).

When the SQL Server service fails to start, here are some steps to resolve: Check the error log to determine the root cause. Make sure the service account has permission to start the service. Check whether dependency services are running. Disable antivirus software. Repair SQL Server installation. If the repair does not work, reinstall SQL Server.

To view the SQL Server port number: Open SSMS and connect to the server. Find the server name in Object Explorer, right-click it and select Properties. In the Connection tab, view the TCP Port field.

If you accidentally delete a SQL Server database, you can take the following steps to recover: stop database activity; back up log files; check database logs; recovery options: restore from backup; restore from transaction log; use DBCC CHECKDB; use third-party tools. Please back up your database regularly and enable transaction logging to prevent data loss.

If the SQL Server installation fails, you can clean it up by following these steps: Uninstall SQL Server Delete registry keys Delete files and folders Restart the computer

SQL Server English installation can be changed to Chinese by following the following steps: download the corresponding language pack; stop the SQL Server service; install the language pack; change the instance language; change the user interface language; restart the application.
