Delete last 10 rows in sql server

It looks like a college homework. Cursors should be the last choice! Anyway, you can solve it easily adding one IDENTITY column to your table in order to identify. RDBMS stands for Relational Database Management System.

RDBMS data is structured in database tables, fields and records.

Each RDBMS table consists of database table rows. Each database table row consists of one or more database table. To remove one or more rows from a table completely, you use the DELETE statement.

For a more precised way you can start by selecting all the rows you want to print out and then you grab the last row id if you have an id column(i recommend you put one) then subtract ten from the last id number and that will be where you want to start, this will make your program to function autonomously and for any number of rows , but if you. Use DELETE statement to remove the duplicate rows. Let’s set up a sample table for the.

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Query the table in reverse or descending order and then get the TOP rows. You may want to delete rows because they are no longer neede or they were incorrectly added in the first place. A single DELETE statement can remove a single row, or number of rows. SQL Server does not automatically track the order of inserts.

Here is the basic syntax of the DELETE. This article is the right answer to such questions and others like this one. All Code samples in this article are downloadable from this link.

To explore this scenario we need a test database. You may wish to check for the number of rows that will be deleted. The only way to define first and last rows are by an order by clause. If you need to find the last X rows added to a table , you need to have some form of indicator on the table to define the order of the insertion.

This is commonly an identity column or a timestamp. How do delete rows from a table? I want to delete all the rows from the last month of a table so i have to be able to pass the month parameter to the delete statement.

The DELETE FROM statement in SQL is used to remove records from a table.

Please note that the DELETE FROM command cannot delete any rows of data that would violate FOREIGN KEY or other constraints. Removing duplicate values from table with a unique index is a bit easier than removing the rows from a table without it. This variable returns the number of rows affected by the last. I have data being inserted into a table periodically and i also want to set up a truncate job to run periodically to prune the oldest rows in the table.

Sorry but still new and not quite sure how to go about this. It’s what we call a “wide” execution plan, something I first heard from Bart Duncan’s post and then later Paul White explained in much more detail. This only becomes meaningful when the question is qualified with more detail like based on the emp_id which was assumed in this case.

There could be any number of other definitions though, e. Based on the last rows inserte or based on an explicit sort of the rows by any of the columns in the table. DELETE FROM UserDetails But above Delete statement will be very slow because it works one row at a time. So you can use Truncate if it possible.

Truncate delete all the rows from table, and it is faster than delete since it uses fewer system and. SQL Query - Delete All Rows Bar The Last ? Deleting only the duplicates – as opposed to deleting all rows that have duplicates – is a bit more complicated.