换行的字符串 "This string\nhas two lines" 字符串中使用单引号时应该怎么写 'You\'re right, it can\'t be a quote' 把数字变成字符串并保留两位小数 var n = 123456.789 n.toFixed(0); //"123457" n.toFixed(2); //"123456.79" parseFloat(str)str以非数字开头,则返回NaN parseFloat(str)
1 exec sp_executesql N'SELECT 2 [Extent2].[Id] AS [Id], 3 [Extent2].[Name] AS [Name], 4 [Extent2].[Description] AS [Description], 5 [Extent2].[RoleTypeNum] AS [RoleTypeNum], 6 [Extent2].[IsDeleted] AS [IsDeleted], 7 [Extent2].[AddDate] AS [AddDate],
方法一:convert(float,字段名) as 别名 select convert(float,round(10.123232,2)) 结果:10.12 select convert(float,round(10,2)) 结果:10 方法二:cast(round(字段名,2) as numeric(20,2)) as 别名 select cast(round(10.123232,2) as numeric(20,2)) 结果:10.12 select cast(round(10,2) as