有一个我现在要预编译的 LinqtoSql 查询。
var unorderedc =
from insp in sq.Inspections
where insp.TestTimeStamp > dStartTime && insp.TestTimeStamp < dEndTime
&& insp.Model == "EP" && insp.TestResults != "P"
group insp by new { insp.TestResults, insp.FailStep } into grp
select new
{
FailedCount = (grp.Key.TestResults == "F" ? grp.Count() : 0),
CancelCount = (grp.Key.TestResults == "C" ? grp.Count() : 0),
grp.Key.TestResults,
grp.Key.FailStep,
PercentFailed = Convert.ToDecimal(1.0 * grp.Count() / tcount * 100)
};
我创建了这个委托:
public static readonly Funct<SQLDataDataContext, int, string, string, DateTime, DateTime, IQueryable<CalcFailedTestResult>>
GetInspData = CompiledQuery.Compile((SQLDataDataContext sq, int tcount, string strModel, string strTest, DateTime dStartTime,
DateTime dEndTime, IQueryable<CalcFailedTestResult> CalcFailed) =>
from insp in sq.Inspections
where insp.TestTimeStamp > dStartTime && insp.TestTimeStamp < dEndTime
&& insp.Model == strModel && insp.TestResults != strTest
group insp by new { insp.TestResults, insp.FailStep } into grp
select new
{
FailedCount = (grp.Key.TestResults == "F" ? grp.Count() : 0),
CancelCount = (grp.Key.TestResults == "C" ? grp.Count() : 0),
grp.Key.TestResults,
grp.Key.FailStep,
PercentFailed = Convert.ToDecimal(1.0 * grp.Count() / tcount * 100)
});
语法错误出现在 CompileQuery.Compile() 语句上
它似乎与使用 select new {} 语法有关。在我编写的其他预编译查询中,我不得不自己使用选择投影。在这种情况下,我需要执行 grp.count() 和立即 if 逻辑。
我搜索了 SO 和其他参考资料,但找不到答案。