SHOW COLUMNS FROM 數據表：顯示數據表的屬性，屬性類型，主鍵信息，是否為NULL，默認值等其他信息。

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mysql>?SHOW?COLUMNS?FROM?runoob_tbl; +-----------------+--------------+------+-----+---------+-------+ |?Field???????????|?Type?????????|?Null?|?Key?|?Default?|?Extra?| +-----------------+--------------+------+-----+---------+-------+ |?runoob_id???????|?int(11)??????|?NO???|?PRI?|?NULL????|???????| |?runoob_title????|?varchar(255)?|?YES??|?????|?NULL????|???????| |?runoob_author???|?varchar(255)?|?YES??|?????|?NULL????|???????| |?submission_date?|?date?????????|?YES??|?????|?NULL????|???????| +-----------------+--------------+------+-----+---------+-------+ 4?rows?in?set?(0.01?sec)

SHOW INDEX FROM 數據表：顯示數據表的詳細索引信息，包括PRIMARY KEY（主鍵）。

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mysql>?SHOW?INDEX?FROM?runoob_tbl; +------------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+ |?Table??????|?Non_unique?|?Key_name?|?Seq_in_index?|?Column_name?|?Collation?|?Cardinality?|?Sub_part?|?Packed?|?Null?|?Index_type?|?Comment?|?Index_comment?| +------------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+ |?runoob_tbl?|??????????0?|?PRIMARY??|????????????1?|?runoob_id???|?A?????????|???????????2?|?????NULL?|?NULL???|??????|?BTREE??????|?????????|???????????????| +------------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+ 1?row?in?set?(0.00?sec)

?SHOW TABLE STATUS LIKE ?[FROM db_name] [LIKE 'pattern'] \G：該命令輸出MySQL數據庫管理系統的性能以及統計信息。

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mysql>?SHOW?TABLE?STATUS??FROM?RUNOOB;???#?顯示數據庫?RUNOOB?中所有表的信息 mysql>?SHOW?TABLE?STATUS?from?RUNOOB?LIKE?'runoob%';?????#?表名以runoob開頭的表的信息 mysql>?SHOW?TABLE?STATUS?from?RUNOOB?LIKE?'runoob%'\G;???#?加上?\G，查詢結果按列打印

本文轉自lq201151CTO博客，原文鏈接：?http://blog.51cto.com/liuqun/2044071，如需轉載請自行聯系原作者

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