查詢mysql數據庫中的表名和註釋以及對應列名和註釋
SELECT
t.TABLE_NAME,
tb.table_comment,
t.COLUMN_NAME,
t.COLUMN_COMMENT
FROM
information_schema. COLUMNS t,
information_schema. TABLES tb
WHERE
t.TABLE_NAME = tb.TABLE_NAME
AND t.table_schema = '數據庫名'
AND tb.table_schema = '數據庫名'
AND t.COLUMN_COMMENT <> ''
AND tb.table_comment <> ''