如何從Firebird中的非表中選擇數據？

Question

我在尋找的火鳥當量：

SELECT 'abc' AS abc, 123 AS def, '20110101' AS dt 

每當我做

SELECT 'whatever' as xxx 

我得到一個錯誤信息。

Answer 1

Firebird，與Oracle一樣，需要SELECT的表格。

通常，RDB$DATABASE用於此目的：

SELECT 'abc' AS abc, 123 AS def, '20110101' AS dt 
FROM RDB$DATABASE