mysql get next sequence number

In the project application, there was a scenario:interface requires sending an int type of serial number, due to multithreading mode, if the timestamp, there may be duplication (of course, the probability is very small).So think of the use of an

**************************************** ****************** The first part is to build a multi-mysql service on a server. **************************************** ****************** I. xuyan There is a mysqld_multi command in Mysql that can be used

Concrete example 22, MySQL alter commandWe need to use the MySQL alter command when we need to modify the data table names or modify the field of the data tables.1. If you need to modify the name of the data table, you can use the RENAME clause in

DB2 database-based applications and data are migrated to MySQL during the work process, and in the original application, a large number of sequence are used, considering minimizing code changes and deciding to retain sequence usage in the migrated

Run multiple MySQL services on the same machine Run multiple MySQL services on the same machine **************************************** ****************** The first part is to build a multi-mysql service on a server. *****************************

Sequence is a sequence of numbers automatically added by a database system in accordance with certain rules. This sequence is generally used as the surrogate primary key (because it is not duplicated) and has no other meaning.Sequence is the

MySQL performance tuning and Architecture Design-Chapter 1 Performance Design-MySQL Replication and replication Optimization Chapter 1 scalability design-MySQL Replication Preface: MySQL Replication is a unique feature of MySQL. It can completely

In the application of the Sequence management function added to MySQL, a serial number of the int type was required to be sent in the following scenario: because of the multithreading mode, if a timestamp is used, there may be duplicates (of course,

1. Oracel can support sequence directly, but MySQL does not support sequence, so we will create sequence in MySQL by simulating the sequence method.Methods for simulating sequence:Project scenario:Project application, there was one of the following

13th. The extensible design of MySQL ReplicationObjective:MySQL Replication is a very distinctive feature of MySQL, and he is able to copy the data from one MySQL server Instance to the Instance of another MySQL server. Although the replication