mySQL metadata queries

gistfile1.sql

# Get the charset of a table
SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
       information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
WHERE CCSA.collation_name = T.table_collation
  AND T.table_schema = "schemaname"
  AND T.table_name = "tablename";

# Get a bunch of details about a table including its collation
SHOW TABLE STATUS IN dbname like 'tablename'

# Get the list of processes the database is currently running
SHOW FULL PROCESSLIST\G

# Get a list of indexes for a database
select index_name from information_schema.statistics;