mysql undo drop table

--MySQL 5.7 CLUSTER NDB 7.5--Create the undo logfile GroupCreate logfile Group lg_1ADD undofile ' Undo_1.log 'Initial_size 1024MUndo_buffer_size 8MENGINE Ndbcluster;--Increase logfileALTER LogFile Group lg_1ADD undofile ' Undo_2.log 'Initial_size 102

ALTER TABLE Syntax ALTER [IGNORE] TABLE tbl_name alter_spec [, Alter_spec ...] Alter_specification:ADD [COLUMN] create_definition [i | After column_name]or ADD [COLUMN] (create_definition, create_definition,...)or ADD INDEX [index_name] (Index_col_

For content-driven Web sites, the key to the quality of the design is the relational database. In this tutorial, we have built our database using the MySQL relational database management system (RDBMS). MySQL is a popular choice for Web site

The common MySQL table engine has InnoDB and MyISAM, the main difference is that InnoDB is suitable for frequent write database operations, MyISAM suitable for reading the database a little bit more, how to change the table engine InnoDB to MyISAM?

The difference between drop, truncate, and delete in MySQL(1) The DELETE statement performs the deletion by deleting one row from the table at a time and saving the row's delete operation as a transaction record in the log for the rollback operation.

MySQL Log System details All those who have done large systems know that the log function is not to be underestimated. In the middle and late stages of the project, the optimization and upgrade of the project are based on the log to make the upgrade

Sort mysql Databases and mysql DatabasesDatabase-related 1. InnoDB logs InnoDB has many logs. There are two concepts in logs that need to be clearly divided: Logical logs and physical logs. 1.1 logical logsThe operation information logs are

Reference | Reference Manual | Chinese 4 establish InnoDB table Suppose you have run the MySQL client program as a MySQL test command. In order to create a table in InnoDB format you must specify TYPE = InnoDB in the SQL command: CREATE TABLE

MySQLCluster create disk table bitsCN.com I. concepts MySQL Cluster uses a series of Disk Data objects to implement Disk tables. Tablespaces: serves as a container for other Disk Data objects. Undo log files: stores the information required

Database related 1. InnoDB's LogInnoDB has a lot of logs, and there are 2 concepts in the log that need to be clearly divided, logical logs and physical logs. 1.1 Logical logsThe information log about the operation becomes a logical log.For