mysql information schema queries

info_schema.sql

# Show largest tables and indexes

SELECT CONCAT(table_schema, '.', table_name),CONCAT(ROUND(table_rows / 1000000, 2), 'M') rows,CONCAT(ROUND(data_length / ( 1024 * 1024 * 1024 ), 2), 'G') DATA,CONCAT(ROUND(index_length / ( 1024 * 1024 * 1024 ), 2), 'G') idx,CONCAT(ROUND(( data_length + index_length ) / ( 1024 * 1024 * 1024 ), 2), 'G') total_size,ROUND(index_length / data_length, 2) idxfrac FROM information_schema.TABLES ORDER  BY data_length + index_length DESC LIMIT  10;

# Show temp table stats

show global status like '%tmp%'