MSSql is a simple method for querying all duplicate data in a data table.

MSSql is a simple method for querying all duplicate data in a data table.

This example describes how to use MSSql to query all duplicate data in a data table. We will share this with you for your reference. The details are as follows:

The following example is provided:

SELECT * FROM SYS_LogContent SCN where slc. LogInfo_ID IN (SELECT maid _ id from SYS_LogContent slc2 group by maid _ id having count (*)> 1)

Simple Description:

The key code is in the brackets above. To query all duplicate data, you can calculate all records with the total number of duplicate data in this field greater than 1 based on a field. In this process, you can use group by for statistics, then, you can use the statistical results as the query conditions to perform another query.

I hope this article will help you design SQL Server database programs.