group by TABLE_SCHEMA，order by TABLE_NAME

Question

我嘗試按順序擁有所有Table_Schema名稱，然後爲每個table_schema命令table_Name。我嘗試這樣的：

SELECT TABLE_SCHEMA , TABLE_NAME, (TABLE_TYPE) 
FROM INFORMATION_SCHEMA.TABLES 
WHERE Table_type = 'BASE TABLE' 
GROUP BY TABLE_SCHEMA 
ORDER BY TABLE_NAME DESC 

謝謝

Answer 1

GROUP BY其實「捲起」所有類似的查詢結果爲一行。 https://msdn.microsoft.com/en-us/library/ms177673.aspx

你只是想要一個訂單，其中有兩列。試試這個：

SELECT TABLE_SCHEMA , TABLE_NAME, (TABLE_TYPE) 
FROM INFORMATION_SCHEMA.TABLES 
WHERE Table_type = 'BASE TABLE' 
ORDER BY TABLE_SCHEMA, TABLE_NAME