Question

我有以下SQL查询：

SELECT 
[nu_ano],
[nu_mes],
[id_projeto],
[id_fase],
'Financial Progress ("Competência")' as ds_categoria,
'Baseline' as ds_curva,
vl_baseline as vl_curva,
cast((vl_baseline / (pc_baseline / 100)) as decimal(18,2)) as vl_curva_total
FROM [Alvarez_Marsal].[dbo].[Schedule_Status]

我的LINQ查询是这样的：

var result = (from l in db.Schedule_Status
        .Where(x => x.nu_mes == 12)
            .Select(x => new Retorno
            {
            nu_ano = x.nu_ano,
            nu_mes = x.nu_mes,
            id_projeto = x.id_projeto,
            id_fase = x.id_fase,
            ds_categoria = "Financial Progress ('Competência')",
            ds_curva = "Baseline",
            vl_curva = x.vl_baseline,
            vl_curva_total = decimal.Round((decimal)(x.vl_baseline / x.pc_baseline / 100), 2)
            })
        select l);

在SQL查询中转换我的LINQ查询，结果是：

SELECT 
[Extent1].[nu_ano] AS [nu_ano], 
[Extent1].[nu_mes] AS [nu_mes], 
[Extent1].[id_projeto] AS [id_projeto], 
[Extent1].[id_fase] AS [id_fase], 
N'Financial Progress (''Competência'')' AS [C1], 
N'Baseline' AS [C2], 
[Extent1].[vl_baseline] AS [vl_baseline], 
ROUND(([Extent1].[vl_baseline] / [Extent1].[pc_baseline]) / cast(100 as decimal(18)), 2) AS [C3]
FROM [dbo].[Schedule_Status] AS [Extent1]
WHERE 12 = [Extent1].[nu_mes]

Class Retorno

        class Retorno
        {
        public int nu_ano { get; set; }
        public short nu_mes { get; set; }
        public int id_projeto { get; set; }
        public int id_fase { get; set; }
        public string ds_categoria { get; set; }
        public string ds_curva { get; set; }
        public decimal? vl_curva { get; set; }
        public decimal? vl_curva_total { get; set; }

        }

鉴于SQL语言中没有Convert.ToDecimal（），我如何在LINQ中将转录为十进制（18,2）？可能吗？我已经尝试过使用decimal.Round（）但它没有用。

我的LINQ查询中的字段vl_curva_total正在返回 3000.0000000000000000000正确将返回30000000.00

Answer 1

您的操作顺序在两个查询之间发生了变化。

SQL查询

(vl_baseline / (pc_baseline / 100))

LINQ查询

(x.vl_baseline / x.pc_baseline / 100)

这解释了两个值的差异（3000 vs 30000000）。只需将括号添加到LINQ查询中即可解决此问题。

(x.vl_baseline / (x.pc_baseline / 100))

在LINQ中转换为十进制（18,2）

1 个答案: