DELETE Duplicate Records Using ROWCOUNT So to delete the duplicate record with SQL Server we can use the SET ROWCOUNT command to limit the number of rows affected by a query. By setting it to 1 we can just delete one of these rows in the table.
To delete the duplicate rows from the table in SQL Server, you follow these steps: Find duplicate rows using GROUP BY clause or ROW_NUMBER() function. Use DELETE statement to remove the duplicate rows.
Use DISTINCT operator in the SELECT clause to remove duplicate rows from the result set.
RANK function to SQL delete duplicate rows We can use the SQL RANK function to remove the duplicate rows as well. SQL RANK function gives unique row ID for each row irrespective of the duplicate row. In the following query, we use a RANK function with the PARTITION BY clause.
If you use Sql Server
delete from Table where id between 79 and 296
Note : the between
statement is inclusive, so rows 79
and 296
will also be deleted
After your edit : you now clarified that you want :
ID (>79 AND < 296)
So use this :
delete from Table where id > 79 and id < 296
You gave a condition ID (>79 and < 296) then the answer is:
delete from tab
where id > 79 and id < 296
this is the same as:
delete from tab
where id between 80 and 295
if id
is an integer.
All answered:
delete from tab
where id between 79 and 296
this is the same as:
delete from tab
where id => 79 and id <= 296
Mind the difference.
DELETE FROM table_name
WHERE id BETWEEN 79 AND 296;
you can also just change your delete to a select *
and test your selection
the records selected will be the same as the ones deleted
you can also wrap your statement in a begin / rollback if you are not sure - test the statement then if all is good remove rollback
for example
SELECT * FROM table WHERE id BETWEEN 79 AND 296
will show all the records matching the where if they are the wants you 'really' want to delete then use
DELETE FROM table WHERE id BETWEEN 79 AND 296
You can also create a trigger / which catches deletes and puts them into a history table
so if you delete something by mistake you can always get it back
(keep your history table records no older than say 6 months or whatever business rules say)
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