Question

我有这个TSQL：

CREATE TABLE #TEMPCOMBINED(
  DESCRIPTION VARCHAR(200),
  WEEK1USAGE DECIMAL(18,2),
  WEEK2USAGE DECIMAL(18,2),
  USAGEVARIANCE AS WEEK2USAGE - WEEK1USAGE,
  WEEK1PRICE DECIMAL(18,2),
  WEEK2PRICE DECIMAL(18,2),
  PRICEVARIANCE AS WEEK2PRICE - WEEK1PRICE,
  PRICEVARIANCEPERCENTAGE AS (WEEK2PRICE - WEEK1PRICE) / NULLIF(WEEK1PRICE,0)
);

INSERT INTO #TEMPCOMBINED (DESCRIPTION, 
WEEK1USAGE, WEEK2USAGE, WEEK1PRICE, WEEK2PRICE)
SELECT T1.DESCRIPTION, T1.WEEK1USAGE, T2.WEEK2USAGE, 
T1.WEEK1PRICE, T2.WEEK2PRICE
FROM #TEMP1 T1
LEFT JOIN #TEMP2 T2 ON T1.MEMBERITEMCODE = T2.MEMBERITEMCODE

...按照我的意愿工作（显示＆＃34; Usage＆＃34;＆＃34; Price＆＃34;列）的两位小数值除了计算的百分比值（PRICEVARIANCEPERCENTAGE）显示值比Cyrano de Bergerac的鼻子更长，例如＆＃34; 0.0252707581227436823＆＃34;

我怎样才能强迫它改为＆＃34; 0.03＆＃34; （等等）？

Answer 1

使用ROUND函数

SELECT ROUND(column_name,decimals) FROM table_name;

Answer 2

在创建表时尝试显式地转换计算列，如下所示：

CREATE TABLE #TEMPCOMBINED(
  DESCRIPTION VARCHAR(200),
  WEEK1USAGE DECIMAL(18,2),
  WEEK2USAGE DECIMAL(18,2),
  USAGEVARIANCE AS WEEK2USAGE - WEEK1USAGE,
  WEEK1PRICE DECIMAL(18,2),
  WEEK2PRICE DECIMAL(18,2),
  PRICEVARIANCE AS WEEK2PRICE - WEEK1PRICE,
  PRICEVARIANCEPERCENTAGE AS CAST((WEEK2PRICE - WEEK1PRICE) / NULLIF(WEEK1PRICE,0) AS DECIMAL(18,2))

);

Answer 3

使用ROUND（）函数。看看here和here

如何将计算出的SQL Server百分比值仅显示两位小数？

3 个答案: