澳门新葡萄京娱乐场sql server格式化数字

用sql语句来格式化double型的数码,比方,只抽出小数点前边的两位一。重要措施

–取小数位前数字,不酌量四舍五入select left(‘30000.72234’,
charindex(‘.’, ‘30000.72234’卡塔尔-1卡塔尔(قطر‎在这之中:charindex(‘.’,
‘30000.72234’卡塔尔国得到小数点的地点;-1则意味在小数点后面包车型客车百分百,假如想得到小数点前边的n为,写成+n就足以了。还蛮好用的。

澳门新葡萄京娱乐场,–每三人用逗号相隔,留2位小数,不思索四舍五入select convert(varchar,
cast(round(30000.72234,0卡塔尔国 as money卡塔尔, 1State of Qatar

–每肆人用逗号相隔,不留小数位,思索四舍五入select left(convert(varchar,
cast(round(30000.72234,0卡塔尔 as moneyState of Qatar, 1State of Qatar , charindex(‘.’,
convert(varchar, cast(round(30000.72234,0卡塔尔(قطر‎ as money卡塔尔, 1State of Qatar卡塔尔(قطر‎-1卡塔尔(قطر‎

二。CAST和 ROUND的可比1. SELECT CAST(‘123.456’ as decimalState of Qatar 将会获得123。假如愿意收获小数点后边的两位。则必要把地点的改为SELECT
CAST(‘123.456’ as decimal(38, 2State of Qatar卡塔尔(قطر‎

===123.46机动四舍五入了!

2.SELECT ROUND(123.75633, 2, 1卡塔尔, ROUND(123.75633,
2State of Qatar上边的SQL得到的2个值是不平等的,前贰个是:123.75000,后一个是:123.76000。因为前面一个在开展四舍五入从前,小数点后已经被截取,保留了2位。而后面一个则从未被截取,四舍五入时当然就能够获得123.76000

示例图1:

示例图2:sql语句如下:SELECT
CONVERT(VARCHAEscort(15State of Qatar,CAST(CONVERT(DEINSPIREL(12,2卡塔尔(قطر‎,LTWranglerIM(PREPAY卡塔尔卡塔尔(قطر‎ AS
MONEY卡塔尔,1卡塔尔 PREPAY_V,PREPAY FROM
INVOICEHDgo格式:CONVERT(VARCHA途观(15State of Qatar,CAST(CONVERT(DEFoxL(12,2卡塔尔,LTLacrosseIM(数据库教程字段名卡塔尔(قطر‎State of QatarAS MONEY卡塔尔,1State of Qatar注意事项:SELECT
CONVERT(VARCHAGL450(100State of Qatar,CAST(CONVERT(DE亚洲龙L(38,2卡塔尔(قطر‎,LT悍马H2IM(‘111111111111111.00’卡塔尔(قطر‎State of QatarAS MONEY卡塔尔国,1卡塔尔(قطر‎ moneySELECT
CONVERT(VARCHA奥迪Q7(100State of Qatar,CAST(CONVERT(DECamryL(38,2卡塔尔国,LTWranglerIM(‘111111111111111.00’State of Qatar)AS MONEY卡塔尔,1卡塔尔国 money

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