one table

Oracle can save an online log file to a number of different locations, and the process of converting an online log to an archive log is called archiving. The corresponding log is called an archive log. One, archive log is a copy of the online redo

oracle| Tips Author: Liu Yingbo Collection and finishing Time: April 29, 2004 Reprint please indicate the source, thank you! 1. Find Useless index: DML performance is low, one of the most serious reasons is the existence of useless indexes. All

In web development, we often need to insert data from one table into another, and sometimes we need to specify an import field that only needs to import records that don't exist in the target table, although they can be split into simple SQL in a

1.1.1. ERROR 1665 (HY000) "Environment description" msyql5.6.14 "Error Message" Error executing SQL statement: ERROR 1665 (HY000): Cannot executestatement:impossible to write to binary log since Binlog_format = Statementand at least One table