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有沒有辦法在同一個查詢中引用MySQL查詢的各個部分?引用mySQL查詢組件
例如:
SELECT 50000 AS starting_principle, .065*50000 AS interest,
principle + interest AS principle_plus_interest
第三列,principle_plus_interest
查詢集給我一個錯誤。除了寫作50000 + .065*50000 AS principle_plus_interest
之外,還有什麼方法可以編碼嗎?
正在執行'50000 + .065 * 50000 AS principle_plus_interest'會比內聯視圖更好。 – Rahul
其實,我認爲'選擇50000作爲starting_principle,0.065作爲興趣'應該在子查詢中。然後計算應該基於這些項目。 –