MySQL 5.6 Reference Manual Including MySQL NDB Cluster 7.3-7.4 Reference Guide
The GLOBAL_STATUS and
SESSION_STATUS tables provide
information about server status variables. Their contents
correspond to the information produced by the
SHOW GLOBAL
STATUS and
SHOW SESSION
STATUS statements (see Section 13.7.5.36, “SHOW STATUS Statement”).
The VARIABLE_VALUE column for each of these
tables is defined as VARCHAR(1024).