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I need to delete from row number 475 to 948 due to them being duplicates of rows 1-474. It would be something close to this, I presume, or is there more to it?
DELETE FROM dbo.industry WHERE row_number between 475 and 948
346
If you wanted to delete a number of rows within a range, you can use the AND operator with the BETWEEN operator. DELETE FROM table_name WHERE column_name BETWEEN value 1 AND value 2; Another way to delete multiple rows is to use the IN operator.
SQL> SQL> insert /*+ append */ into T 2 select mod(rownum,10), rownum 3 from dual 4 connect by level <= 100000; 100000 rows created. SQL> SQL> commit; Commit complete. SQL> SQL> delete from T 2 where rowid not in 3 ( 4 select rid 5 from 6 ( 7 select t.
ROW_NUMBER function is a SQL ranking function that assigns a sequential rank number to each new record in a partition. When the SQL Server ROW NUMBER function detects two identical values in the same partition, it assigns different rank numbers to both.
To delete rows in a MySQL table, use the DELETE FROM statement: DELETE FROM products WHERE product_id=1; The WHERE clause is optional, but you'll usually want it, unless you really want to delete every row from the table.
May be it is too late, but I am usually doing this
; with cte(rownum)as(
select row_number () over(partition by [Col1], [Col2] order by Col3) from [table]
)
delete from cte where rownum > 1
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