Updating mysql server
Only the partitions (or subpartitions) listed are checked for matches, and a row that is not in any of these partitions or subpartitions is not updated, whether it satisfies the clause, are flagged as unsafe for statement-based replication.
(This is because the order in which the rows are updated determines which rows are ignored.) Such statements produce a warning in the error log when using statement-based mode and are written to the binary log using the row-based format when using mode.
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A table that contains entries of different categories, in which an internal order needs to represented ( lets say a table with busstops on different routes).
Once the option says mysql-5.7, scroll down on the main menu to Apply and press ENTER again. 5.7), which is not a supported upgrade path as documented by mysql.
The easiest way around this is to upgrade mysql to 5.6 whilst still under 14.04. ) dumping all your databases; hostname # mysqldump --lock-all-tables -u root -p --all-databases then upgrading to mysql 5.6; hostname # apt-get install mysql-server-5.6 mysql-client-5.6 mysql-server-core-5.6 mysql-client-core-5.6 This way, all your databases are upgraded in place and (on my machines so far) entirely safely and transparently to 5.6.
(Bug #11758262, Bug #50439) See Section 184.108.40.206, “Determination of Safe and Unsafe Statements in Binary Logging”, for more information.
If you access a column from the table to be updated in an expression, assignments are generally evaluated from left to right.
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I was not able, using my SQL 4.1.1, to do this as a subquery: UPDATE Groups LEFT JOIN (SELECT Group Id, MIN(Val Within Group) AS base Val FROM Groups GROUP BY Group Id) AS Grp Sum USING (Group Id) SET Val Within Group=Val Within Group-base Val; Csaba Gabor UPDATE Syntax with "on-line" updating value limitations.