tables provide information about server status variables. Their
contents correspond to the information produced by the
STATUS statements (see Section 18.104.22.168, “SHOW STATUS Syntax”).
VARIABLE_VALUE column for each of these
tables is defined as
Previously, this column had the data type
DECIMAL(22,7), but was changed to
VARCHAR(20480) in 5.1.19 to avoid loss of
data when working with status variables whose values were
strings, and shortened to
5.1.31 to improve performance.