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MySQL Storage Requirements for Numeric Types in InnoDB?

Geoff Millikan
Last Modified: 2012-05-09
In MySQL5.0 I calculated the storage requirements for the below data types in InnoDB.  Can you confirm this is correct?


MEDIUMINT()   = 3 bytes
DECIMAL(3)    = 4 bytes
DECIMAL(9)    = 4 bytes
DECIMAL(10)   = 5 bytes
DECIMAL(16)   = 8 bytes
DECIMAL(2,2)  = 8 bytes
DECIMAL(12,2) = 9 bytes

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Did I get that right for InnoDB?


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