[英]Get distinct month and year with SubSonic
I have date type column (MySQL): 我有日期类型列(MySQL):
SELECT invdate FROM invoices;
invdate
-------
2009-08-22
2009-07-12
2009-08-23
-------
and I want get month and year like this: 我想要这样的月份和年份:
SELECT DISTINCT MONTH(invdate) AS invmonth, YEAR(invdate) AS invyear FROM invoices;
how to use in C# with SubSonic (SimpleRepository)? 如何在C#中使用SubSonic(SimpleRepository)?
TIA TIA
Have you had a chance to have a look at the docs? 您是否有机会查看文档? See the link and code below, it should help. 请参阅下面的链接和代码,它应该会有所帮助。
http://subsonicproject.com/docs/Distinct http://subsonicproject.com/docs/Distinct
[Test]
public void SqlQuery_when_setting_distinct_it_should_set_IsDistinct()
{
SubSonic.SqlQuery query= new
Select(Product.SupplierIDColumn).From<Product>().Distinct();
Assert.IsTrue(query.IsDistinct);
}
[Test]
public void SqlQuery_should_handle_distinct()
{
ProductCollection select = new
Select(Product.SupplierIDColumn).From<Product>().Distinct()
.ExecuteAsCollection<ProductCollection>();
Assert.AreEqual(29, select.Count);
}
[Test]
public void SqlQuery_GetRecordCount_should_handle_distinct()
{
int select = new Select(Product.SupplierIDColumn)
.From<Product>().Distinct()
.GetRecordCount();
Assert.AreEqual(29, select);
}
OMG! 我的天啊! I forgot to define variable as date/datetime, so I can not use these functions. 我忘记将变量定义为日期/日期时间,因此无法使用这些功能。
before: 之前:
public string invdate { get; set; }
after: 后:
public DateTime invdate { get; set; }
My mistake, I'm sorry. 我的错,对不起。 Problem solved . 问题解决了 。
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