How do you multiple delete in SQL?

How do you multiple delete in SQL?

How do you multiple delete in SQL?

There are a few ways to delete multiple rows in a table. 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.

How do I delete a batch file in SQL Server?

Another option is to complete the DELETE in batches.

  1. use MyDB.
  2. GO.
  3. DECLARE @BatchSize INT = 4999.
  4. WHILE 1 = 1.
  5. BEGIN.
  6. DELETE TOP (@BatchSize)
  7. FROM MyTable.
  8. WHERE Date < ‘20160301”;

How can I speed up delete in SQL Server?

If you are deleting 95% of a table and keeping 5%, it can actually be quicker to move the rows you want to keep into a new table, drop the old table, and rename the new one. Or copy the keeper rows out, truncate the table, and then copy them back in.

Is truncate faster than delete?

TRUNCATE is faster than DELETE , as it doesn’t scan every record before removing it. TRUNCATE TABLE locks the whole table to remove data from a table; thus, this command also uses less transaction space than DELETE . Unlike DELETE , TRUNCATE does not return the number of rows deleted from the table.

Is delete faster with index?

If you’re only indexing to make reads faster, you need to think again. Indexes can make every operation in the database faster, even deletes.

What is a delete query?

A DELETE query is an action query (SQL statement) that deletes a set of records according to criteria (search conditions) you specify.

How do I delete a specific data in SQL?

SQL DELETE Statement

  1. DELETE FROM table_name WHERE condition;
  2. Example. DELETE FROM Customers WHERE CustomerName=’Alfreds Futterkiste’;
  3. DELETE FROM table_name;
  4. Example. DELETE FROM Customers;