sql increment value by 1 in select

MyISAM Data Sheet After you delete the largest numbered record, the number is not reusable. You can use the "auto_increment=n" option to specify a self-increment initial value when building a table. Use the ALTER TABLE TABLE_NAME AUTO_INCREMENT=N

MyISAM data table After a record with the maximum number is deleted, the number cannot be reused. You can use the "auto_increment = N" option to specify an auto-increment initial value when creating a table. You can use the alter table table_name

Today found in bulk INSERT, the self-increment primary key is not continuous ....InnoDB auto_increment Lock ModesThis section describes AUTO_INCREMENT the behavior of lock modes used to generate auto-increment values, and how each lock mode aff ECTS

Note: Prior to mysql8.0, the InnoDB storage engine table self-increment ID may be reused.This can cause problems in a number of scenarios, including but not limited to: primary and Standby switching, historical data migration, and other scenarios.

http://blog.sina.com.cn/s/blog_68431a3b0100y04v.htmlMethod 1:TRUNCATE TABLE nameThis will not only delete all the data, but also reposition the increment fieldMethod 2:Delete from your table nameDBCC CHECKIDENT (your table name, reseed,0)Reposition

Simple Method for setting ID field auto-increment when creating a table on SQL server, SQL Field Open the database table to be set and click the field to be set, such as id. The column attribute table of id appears below. In column attributes,

[DB] [MySql] about getting the value of the auto-increment field and @ IDENTITY and concurrency issues Anyone who just switched from Oracle to MySql will be confused that MySql does not have Sequence in Oracle. MySql does not have Sequence. How can

Oracle column self-increment-identity Columns in Oracle Database 12c Release 1 (12.1)In previous versions of Oracle 12C, if the column was to grow from a sequence + trigger, the new Identity columns feature was introduced into the 12C Oracle, which

For those who have just turned to MySQL from Oracle, there is no confusion in MySQL for sequence in Oracle. MySQL does not have sequence, then MySQL's primary key in what way to achieve the best?There are several main ways:1. The self-increment

var m = new your model ();Db. Your Model.add (m);Db. SaveChange ();Response.Write (m.id); Perform. SaveChange () The ID value can be obtained directly after saving.There is no ID value before saving.When the Entity Framework inserts data into a