program to delete duplicate photos

corrected now Insert into formal table (select * from temporary table ); Drop table temporary table; If you want to delete the duplicate data of a table, you can create a temporary table first, import the data after the duplicate data is removed to the temporary table, and then import the data into the formal table from the temporary table, as follows: Insert in

into duplicate_all Select * from # tmp (2) Use ROW_NUMBERCopy codeThe Code is as follows: with tmpAs(Select *, ROW_NUMBER () OVER (partition by c1, c2, c3 order by (getdate () as numFrom duplicate_allWhere c1 = 1)Delete tmp where num> 1 If multiple tables have completely repeated rows, you can use UNION to join multiple tables to a new table with the same structure, SQL Server helps remove duplicate rows b

# tmp(2) Use ROW_NUMBERCopy codeThe Code is as follows:With tmpAs(Select *, ROW_NUMBER () OVER (partition by c1, c2, c3 order by (getdate () as numFrom duplicate_allWhere c1 = 1)Delete tmp where num> 1 If multiple tables have completely repeated rows, you can use UNION to join multiple tables to a new table with the same structure, SQL Server helps remove duplicate rows between tables. Ii.

by Peopleid 1. Querying for Duplicate records SELECT * FROM table namewhere repeating field in (select repeating field from table name GROUP by repeating field having count (repeating field) > 1) 2. Delete Keep a duplicate record Delete from table namewhere repeating field in (Select repeating field from

#tmp From Duplicate_all where C1 = 1 Go Delete Duplicate_all where C1 = 1 Go INSERT INTO Duplicate_all SELECT * FROM #tmp (2) using Row_number Copy Code code as follows: With TMP As ( Select *,row_number () over (PARTITION by c1,c2,c3 Order by (GETDATE ()) as Num From Duplicate_all where C1 = 1 ) Delete tmp where num > 1 If multiple tables have co

select * from #tmp If the table is not large, you can export all records once, and then truncate the table, and then use distinct to export back, so as to avoid Delete log operations. (2) Use row_number with tmpas(select *,ROW_NUMBER() OVER(PARTITION BY c1,c2,c3 ORDER BY(getdate())) as numfrom duplicate_allwhere c1 = 1)delete tmp where num > 1 If multiple tables have completely repeated rows, you can use

object_id (' tempdb.. #tmp ') is not null drop table #tmp Go SELECT DISTINCT * into #tmp From Duplicate_all where C1 = 1 Go Delete Duplicate_all where C1 = 1 Go INSERT INTO Duplicate_all SELECT * FROM #tmp (2) using Row_number With TMP As ( Select *,row_number () over (PARTITION by c1,c2,c3 Order by (GETDATE ()) as Num From Duplicate_all where C1 = 1 ) Delete tmp where num > 1 If multip

During the use of the database, due to the problems of the program, there are sometimes duplicate data, which causes the database to be set up incorrectly. Method One Declare @max integer, @id integer Declare cur_rows cursor Local for select main field, COUNT (*) from table name Group by main field having count (*) > 1 Open Cur_rows Fetch cur_rows into @id, @max While @ @fetch_status =0 Begin Select

by name, autoid Select * from # TMP where autoid in (select autoid from # tmp2) The last select gets the result set with no duplicate name and address (but an autoid field is added, and this column can be omitted in the select clause during actual writing). 3. Some key fields are repeated, the record has an ID. the first method can delete all repeated .. (only records with the smallest

During the internship, a large amount of data was collected using the "thief" program, but many of them were repeated. Delete the duplicate data (keep one record) according to the practice requirements, and delete several data tables And put the data in a data table. Based on your own experience, let's take a few point

During database usage, due to program problems, duplicate data may occur, which leads to incorrect database settings ...... During database usage, due to program problems, duplicate data may occur, which leads to incorrect database settings ...... Method 1 The Code is as follows: Declare @ max integer, @ id integer

This example describes how to delete duplicate MySQL data. Share it with you for your reference. The specific method is as follows: Project background in a recently developed linux performance collection project, the thread program is found to be slow in receiving the database, and then carefully located to find a lot of redundant data in the database. Because in

Because this program is getting tired of me, the details are troublesome.Package Solutions;Import java.util.ArrayList;/*** Created by Hu on 2015/12/12.*//** Delete duplicate nodes in a linked list* In a sort of linked list, there are duplicate nodes,* Please delete the

Original: Delete MySQL duplicate dataDelete MySQL duplicate data project backgroundIn a recent Linux performance acquisition project, found that the thread of the program storage is slow, and then carefully locate, found in the database a lot of redundant data. Because in the acquisition, for the same device, the same

The file name of the duplicate backup usually contains (1), (2), and so on, with Python implementation, by the way to detect the same file name under different directories, also deleted#!/usr/bin/env python#Coding:utf-8"""__title__ = ' __author__ = ' hadoop ' __mtime__ = ' 2016/6/18 '"""#The program runs first, prints the information correctly, cancels the Os.remove (path) comment, and actually deletes the

According to this code, I wrote a small program as a reference to code information, convenient to use directly after, do not need to find online. If you think it's good, put it on the collection! 1. Front Code: 2. Background code: Using System; Using System.Collections.Generic; Using System.Linq; Using System.Web; Using System.Web.UI; Using System.Web.UI.WebControls; Using System.Collections; Reference public partial class Net