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Peggy Yang - 恩典之路DESCRIPTION
Peggy Yang - 恩典之路. SQL學習 - ROUND 對數值欄位值進行四捨五入計算. SELECT ROUNDcolumn name, decimals FROM table name;. SELECT ROUNDPrice, 0 FROM orders;. ROUND125.315, 0. ROUND125.315, 1. Would return 125.3. ROUND125.315, 2. Would return 125.32. ROUND125.315, 3. Would return 125.315. ROUND-125.315, 2. Would return -125.32. SQL學習- ISNULL 或 NVL 選擇性條件. 遇到某一個要計算的欄位資料裡有NULL或都有值在計算時不加以處理抓出來幾千幾百筆一個一個在網頁程式判繼是NULL要怎樣非NULL又無樣效率會拖得很慢 好在SQL可以先幫我處理這個部份需求是如果是NULL預設為100非NULL以抓出來的值為主 MS SQLT-SQL 或 NVL. MVVM 的架構一樣.CONTENT
This web page hopeyoung1208.blogspot.com states the following, "SELECT ROUNDcolumn name, decimals FROM table name;." We saw that the webpage said " SELECT ROUNDPrice, 0 FROM orders;." It also said " SQL學習- ISNULL 或 NVL 選擇性條件. 遇到某一個要計算的欄位資料裡有NULL或都有值在計算時不加以處理抓出來幾千幾百筆一個一個在網頁程式判繼是NULL要怎樣非NULL又無樣效率會拖得很慢 好在SQL可以先幫我處理這個部份需求是如果是NULL預設為100非NULL以抓出來的值為主 MS SQLT-SQL 或 NVL."