In this page, we are going to discuss, how rows can be removed from a table by SQL DELETE statement along with the SQL MIN() function. One that gets slower the more data you're … Summary. Eg I want to delete CategoryID 2,3,5. Delete Multiple Rows: You can delete multiple rows from SQL Server Table by using suitable search condition. SQL delete duplicate Rows using Group By and having clause. The table definitions and full requirements would be helpful. The Group By clause groups data as per the defined columns and we can use the COUNT function to check the occurrence of a row. If you want to repeat the tests I ran, use the remove_rows procedure in this Live SQL script. This SQL Server tutorial explains how to use the DELETE statement in SQL Server (Transact-SQL) with syntax and examples. The SQL Server (Transact-SQL) DELETE statement is used to delete a single record or multiple records from a table in SQL Server. Here I will explain how to Delete Duplicate Record or Rows from Table in SQL Server. The syntax for the DELETE FROM statement is as follows: You can join a table to the table in which you are deleting rows to identify which rows to delete. DELETE FROM Categories WHERE CategoryID="2"AND CategoryID="3" AND CategoryID="5"; but no rows and deleted. SQL query to delete duplicate rows create a table like this, create … I am new to SQL and I was looking at the DELETE keyword. SQL delete records using subqueries with alias and MIN . The following statement deletes the rows which has the value 1 0r 2 in the column ID. You delete each row in the CORPDATA.EMPLOYEE table with a WORKDEPT value of D11 as follows: DELETE FROM CORPDATA.EMPLOYEE WHERE WORKDEPT = 'D11' The WHERE clause tells SQL which rows you want to delete from the table. Multiple Ways to Delete Rows. In this method, we use the SQL GROUP BY clause to identify the duplicate rows. And if I use OR then everything gets … Removing most of the rows in a table with delete is a slow process. Note the storage quota on Live SQL is too small to test deleting 100,000 rows! I am not going in detail or background of the article its a common problem which occurs time to time with developers so here i just explain how solve your problem. Example: To remove rows from the table 'agent1' with following conditions - 1. In the table, we have a few duplicate records, and we need to remove them. Syntax. The DELETE FROM statement in SQL is used to remove records from a table.. DELETE FROM us_TEST WHERE [cell] = 'CA001018611' AND [date] = '2016-01-04'; DELETE FROM us_TEST WHERE [cell] = 'CA001135126' AND [date] = '2016-07-14'; If though, you have your criteria to find your rows to delete in tables there are other options. SQL deletes all the rows that satisfy the search condition from the base table. In case there are multiple duplicate rows to delete and all fields are identical, no different id, the table has no primary key , one option is to save the duplicate rows with distinct in a new table, delete all duplicate rows and insert the rows back. Delete and Update Rows Using Inner Join in SQL Server Posted September 22, 2015 by Vishwanath Dalvi in Database , SQL Server Inner join is used to select rows from multiple tables based on a … As you can see there are multiple ways to delete rows from a SQL Server table. This is helpful if the table is really big and the number of duplicate rows is small. You can use the WHERE clause to identify specific criteria for the rows that need to be deleted. However, your answer also deletes the other records in the database.I would like to preserve all other entries in the database and delete only the duplicate IDs that were selected in the query. It does indeed delete the records with duplicate IDs and leaves rows with only the max rate. 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