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remove duplicate rows in sql

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SQL Server: "delete" and "remove"

1. Preface 2. Delete through SSMs 3. Delete by SQL statement 3.1 Deleting a single row of data 3.2 Delete all row data 3.3 Deleting tables and databases 1. PrefaceAdditions and deletions are the operation of the data, where "delete" the corresponding SQL statement is "delete", that is, "delete" meaning.This article mainly introduces the deletion of data, respectively, using Ssms/

SQL statement "Remove 10th through 20th records from datasheet" +select top usage

Label:1. First, select top usage:Reference question the difference between select top N * FROM and select * FROM Select * from table--Fetch all data, return unordered collection Select top n * from table -Returns an unordered collection based on the first n of the data storage order in the tableSelect * fromTableOrder byIDdesc--Take all the data and return the ordered list in reverse order of IDSelectTopN * from TableOrder byIDdesc--Reverse the first order of IDs, then fetch the first n, a

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