The database empties the table data and makes the primary key start from 1

The database empties the table data and makes the primary key from 1 Start （ For work records only ）

If you use navicat , Right click the table name , The difference between empty table and truncated table is ：

Empty table empty table data , When adding data , The last data before the primary key is still not deleted begins to increase .
Truncate the table and clear the table data , When adding data , Primary key from 1 Start , Equivalent to the following two SQL.

• SQL1（ Use truncate Clear all data. The primary key self growth is from 1 Start ( More efficient ）
  truncate table " Table name
• SQL2（ First step ： Clear the table data first The second step ： Set the self growth of the table to 1）
  1、 DELETE FROM Table name ;
  2、 ALTER TABLE Table name AUTO_INCREMENT=1;