FYI Center for Database Administrators: MySQL

MySQL Function References
Where to find reference information and tutorials on MySQL database functions? I want to know how to use SUBSTRING(), ABS(), DATEDIFF(), and other MySQL functions. Here is a collection of reference information and tutorials on MySQL database functions compiled by FYIcenter.com DBA team. Calling MySQ... 2023-11-18, 14134🔥, 0💬

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IS_FREE_LOCK() - Checking Lock Status
How to check the status of a user defined lock using the IS_FREE_LOCK() function? IS_FREE_LOCK(lock) is a MySQL built-in function that returns 1 if a given user lock is free, 0 otherwise. For example: SELECT GET_LOCK('MyLock', 60), IS_FREE_LOCK('MyLock'); -- +------------------------+---- -----------... 2023-12-20, 1638🔥, 0💬

PERCENT_RANK() - Rank Percentage of Sorted Values
How to calculate the rank percentage of the sorting field expression in the current result set window using the PERCENT_RANK() function? PERCENT_RANK(n) is a MySQL built-in window function that calculates the rank percentage of the sorting field expression in the current result set window. For examp... 2024-09-12, 1629🔥, 0💬

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