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MySQL table_exists and rename table execution time

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https://stackoverflow.com/questions/9479056/table-exists-method-might-not-be-working-properly


https://dba.stackexchange.com/questions/53836/how-long-will-it-take-to-rename-table


INSERT with check exist (normally we often using UNIQUE key then INSERT IGNORE).
https://stackoverflow.com/questions/3164505/mysql-insert-record-if-not-exists-in-table


https://stackoverflow.com/questions/38601880/unable-to-rename-table-due-to-metadata-lock

RENAME TABLE will terminate the transaction.

You can do both renames in a single, atomic, statement (no transaction):

RENAME TABLE `main_territorypricing`  TO `main_territorypricing2`,
             `main_territorypricing1` TO `main_territorypricing`;

It will have to wait for any other connections that are busy with any of the tables; make sure you don't have some connection not letting go.



https://tech.smartling.com/wrangling-gigantic-tables-in-mysql-universal-language-40274d89151b


Copy data between databases.

https://stackoverflow.com/questions/12242772/easiest-way-to-copy-a-table-from-one-database-to-another


No space left (too many inode)

https://dba.stackexchange.com/questions/57543/mysql-error-28-no-space-left-on-the-device

It seem that in many case, I see we have to restart server instance (over AWS web console) in order to make system reboot and working. Normal restart mysql / server not take effect.


https://www.concurrencylabs.com/blog/guide-to-rds-reserved/

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