Module: Mycmd::SQL

Defined in:

lib/mycmd/sql.rb

Constant Summary

ALL_DATABASE_SIZES =

"SELECT T.TABLE_SCHEMA, CAST((SUM(T.DATA_LENGTH+T.INDEX_LENGTH)/1024/1024) AS CHAR) AS SIZE_MB FROM INFORMATION_SCHEMA.TABLES AS T GROUP BY T.TABLE_SCHEMA UNION SELECT 'all_databases', CAST((SUM(T.DATA_LENGTH+T.INDEX_LENGTH)/1024/1024) AS CHAR) FROM INFORMATION_SCHEMA.TABLES AS T"

QCACHE_SIZE =

"SELECT G.VARIABLE_VALUE AS size FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES AS G WHERE G.VARIABLE_NAME = 'QUERY_CACHE_SIZE'"

QCACHE_HIT_RATE =

"SELECT (SELECT (SELECT G.VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS AS G WHERE G.VARIABLE_NAME = 'QCACHE_HITS')/(SELECT SUM(G.VARIABLE_VALUE) FROM INFORMATION_SCHEMA.GLOBAL_STATUS AS G WHERE G.VARIABLE_NAME IN ('QCACHE_HITS','QCACHE_INSERTS','QCACHE_NOT_CACHED')) * 100) AS rate"

INNODB_BUFFER_HIT_RATE =

"SELECT (1 - ((SELECT G.VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS AS G WHERE G.VARIABLE_NAME = 'INNODB_BUFFER_POOL_READS')/(SELECT G.VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_STATUS AS G WHERE G.VARIABLE_NAME = 'INNODB_BUFFER_POOL_READ_REQUESTS'))) * 100 AS rate"

Class Method Summary

• .table_sizes(db) ⇒ Object

Class Method Details

.table_sizes(db) ⇒ Object

# File 'lib/mycmd/sql.rb', line 11

def table_sizes(db)
  "SELECT T.TABLE_NAME, CAST(((T.DATA_LENGTH+T.INDEX_LENGTH)/1024/1024) AS CHAR) AS SIZE_MB FROM INFORMATION_SCHEMA.TABLES AS T WHERE T.TABLE_SCHEMA = '#{db}' UNION SELECT 'all_tables', CAST((SUM(T.DATA_LENGTH+T.INDEX_LENGTH)/1024/1024) AS CHAR) FROM INFORMATION_SCHEMA.TABLES AS T WHERE T.TABLE_SCHEMA = '#{db}'"
end