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Oracle support datediff

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sunkaixuan 2022-03-22 23:02:43 +08:00
parent d9e8f79108
commit af39446253
2 changed files with 35 additions and 0 deletions
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8
Src/Asp.Net/OracleTest/Demo/Demo1_Queryable.cs
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@ -53,6 +53,14 @@ namespace OrmTest
).ToList();
var test2 = db.Queryable<Order>().Select<ViewOrder>().ToList();
var test3 = db.Queryable<Order>().Select(it=>new Order() { CreateTime=SqlFunc.GetDate() }).ToList();
var btime = Convert.ToDateTime("2021-2-1");
var etime = Convert.ToDateTime("2022-1-12");
var test01 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Year, btime, etime)).ToList();
var test02 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Day, btime, etime)).ToList();
var test03 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Month, btime, etime)).ToList();
var test04 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Second, DateTime.Now, DateTime.Now.AddMinutes(2))).ToList();
var test05 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Minute, DateTime.Now, DateTime.Now.AddMinutes(21))).ToList();
var test06 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Hour, DateTime.Now, DateTime.Now.AddHours(3))).ToList();
Console.WriteLine("#### Examples End ####");
}

27
Src/Asp.Net/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
View File

@ -53,6 +53,33 @@ namespace SqlSugar
}
public partial class OracleMethod : DefaultDbMethod, IDbMethods
{
public override string DateDiff(MethodCallExpressionModel model)
{
var parameter = (DateType)(Enum.Parse(typeof(DateType), model.Args[0].MemberValue.ObjToString()));
var begin = model.Args[1].MemberName;
var end = model.Args[2].MemberName;
switch (parameter)
{
case DateType.Year:
return $" ( cast((months_between( {end} , {begin}))/12 as number(9,0) ) )";
case DateType.Month:
return $" ( cast((months_between( {end} , {begin})) as number(9,0) ) )";
case DateType.Day:
return $" ( ROUND(TO_NUMBER({end} - {begin})) )";
case DateType.Hour:
return $" ( ROUND(TO_NUMBER({end} - {begin}) * 24) )";
case DateType.Minute:
return $" ( ROUND(TO_NUMBER({end} - {begin}) * 24 * 60) )";
case DateType.Second:
return $" ( ROUND(TO_NUMBER({end} - {begin}) * 24 * 60 * 60) )";
case DateType.Millisecond:
return $" ( ROUND(TO_NUMBER({end} - {begin}) * 24 * 60 * 60 * 60) )";
default:
break;
}
throw new Exception(parameter + " datediff no support");
}
private void PageEach<T>(IEnumerable<T> pageItems, int pageSize, Action<List<T>> action)
{
if (pageItems != null && pageItems.Any())