Reading the MySQL Manual

I was asked the question today, “How do I show the details of a Stored Procedure in MySQL. The SHOW PROCEDURE ‘name’ didn’t work.”.

The obvious answer was SELECT ROUTINE_NAME,ROUTINE_DEFINITION FROM INFORMATION_SCHEMA.ROUTINES, given I like to use the INFORMATION_SCHEMA whenever possible. This lead me to think was is the corresponding SHOW command. A quick manual search got me to SHOW CREATE PROCEDURE .

What was interesting was not this, but the list of other SHOW commands I didn’t know. I did not know about SHOW MUTEX STATUS , SHOW OPEN TABLES and SHOW PROCEDURE CODE for example.

It pays if you have free time (who ever has that), to re-read the manual, or at least a detailed index regularly. I’m sure there are plenty more helpful tips out there. Now just what does the output of these new commands really do, and does it really help. If only I could get commands to the stuff I really want.

Tagged with: Databases General MySQL

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The interquartile range (IQR) measures the spread of the middle 50% of a distribution — the distance between the first quartile (Q1) and the third quartile (Q3). Combined with Tukey’s 1.

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The mode is the value or values that appear most frequently in a dataset. Unlike the mean or median, it applies naturally to categorical and ordinal data — star ratings, product codes, survey responses — and reveals what is most common, not what is average.

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MySQL offers three different approaches to extending the SQL capabilities with the default product you download and install. These are: User Defined Function (UDF) MySQL Manual MySQL Plugin MySQL Manual MySQL Component MySQL Manual In my prior post I provided a new uuidv function that accepted a numeric argument to return a string of the version of UUID specified.