Delete Record

Use delete to delete records

##user table, the table structure is as follows:

##mysql> delete from user where id = 1;

Query OK, 1 row affected (0.08 sec)

Delete the record of the row with ID 1, Li Wenkai.

Clear table records

delete and truncate are the same, but they have one difference, that is, DELETE can return the number of deleted records, while TRUNCATE TABLE returns 0.

If there is an auto-increment field in a table, use truncate table to restore the starting value to 1.

#【Remember】

1. When deleting, be sure to remember to add the where condition, otherwise the records in the entire table will be cleared.

2. Be sure to back up, back up, back up before deleting important data.