자주 쓰는 편인것;
13.7.5.5
SHOW COLUMNS
SyntaxSHOW [FULL] COLUMNS {FROM | IN}tbl_name
[{FROM | IN}db_name
] [LIKE 'pattern
' | WHEREexpr
]
13.7.5.10
SHOW CREATE TABLE
SyntaxSHOW CREATE TABLE tbl_name
13.7.5.38
SHOW VARIABLES
SyntaxSHOW [GLOBAL | SESSION] VARIABLES [LIKE 'pattern
' | WHEREexpr
]
http://dev.mysql.com/doc/refman/5.7/en/show.html