SELECT
 TABLE_NAME 表名,
 COLUMN_NAME 列名,
 COLUMN_TYPE 數(shù)據(jù)類型,
 DATA_TYPE 字段類型,
 CHARACTER_MAXIMUM_LENGTH 長度,
 IS_NULLABLE 是否為空,
 COLUMN_DEFAULT 默認(rèn)值,
 COLUMN_COMMENT 備注 
FROM
 INFORMATION_SCHEMA.COLUMNS
where
-- developerclub為數(shù)據(jù)庫名稱，到時(shí)候只需要修改成你要導(dǎo)出表結(jié)構(gòu)的數(shù)據(jù)庫即可
table_schema ='developerclub'