DbFunctions Class
Definition
Important
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Provides common language runtime (CLR) methods that expose EDM canonical functions for use in DbContext or ObjectContext LINQ to Entities queries.
public static class DbFunctionstype DbFunctions = classPublic Class DbFunctions- Inheritance
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DbFunctions
Remarks
Note that this class was called EntityFunctions in some previous versions of Entity Framework.
Methods
| AddDays(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddDays EDM function to add the given number of days to a date/time. |
| AddDays(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddDays EDM function to add the given number of days to a date/time. |
| AddHours(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddHours EDM function to add the given number of hours to a date/time. |
| AddHours(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddHours EDM function to add the given number of hours to a date/time. |
| AddHours(Nullable<TimeSpan>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddHours EDM function to add the given number of hours to a time span. |
| AddMicroseconds(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMicroseconds EDM function to add the given number of microseconds to a date/time. |
| AddMicroseconds(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMicroseconds EDM function to add the given number of microseconds to a date/time. |
| AddMicroseconds(Nullable<TimeSpan>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMicroseconds EDM function to add the given number of microseconds to a time span. |
| AddMilliseconds(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMilliseconds EDM function to add the given number of milliseconds to a date/time. |
| AddMilliseconds(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMilliseconds EDM function to add the given number of milliseconds to a date/time. |
| AddMilliseconds(Nullable<TimeSpan>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMilliseconds EDM function to add the given number of milliseconds to a time span. |
| AddMinutes(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMinutes EDM function to add the given number of minutes to a date/time. |
| AddMinutes(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMinutes EDM function to add the given number of minutes to a date/time. |
| AddMinutes(Nullable<TimeSpan>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMinutes EDM function to add the given number of minutes to a time span. |
| AddMonths(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMonths EDM function to add the given number of months to a date/time. |
| AddMonths(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddMonths EDM function to add the given number of months to a date/time. |
| AddNanoseconds(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddNanoseconds EDM function to add the given number of nanoseconds to a date/time. |
| AddNanoseconds(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddNanoseconds EDM function to add the given number of nanoseconds to a date/time. |
| AddNanoseconds(Nullable<TimeSpan>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddNanoseconds EDM function to add the given number of nanoseconds to a time span. |
| AddSeconds(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddSeconds EDM function to add the given number of seconds to a date/time. |
| AddSeconds(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddSeconds EDM function to add the given number of seconds to a date/time. |
| AddSeconds(Nullable<TimeSpan>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddSeconds EDM function to add the given number of seconds to a time span. |
| AddYears(Nullable<DateTime>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddYears EDM function to add the given number of years to a date/time. |
| AddYears(Nullable<DateTimeOffset>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical AddYears EDM function to add the given number of years to a date/time. |
| AsNonUnicode(String) |
When used as part of a LINQ to Entities query, this method acts as an operator that ensures the input is treated as a non-Unicode string. |
| AsUnicode(String) |
When used as part of a LINQ to Entities query, this method acts as an operator that ensures the input is treated as a Unicode string. |
| CreateDateTime(Nullable<Int32>, Nullable<Int32>, Nullable<Int32>, Nullable<Int32>, Nullable<Int32>, Nullable<Double>) |
When used as part of a LINQ to Entities query, this method invokes the canonical CreateDateTime EDM function to create a new DateTime object. |
| CreateDateTimeOffset(Nullable<Int32>, Nullable<Int32>, Nullable<Int32>, Nullable<Int32>, Nullable<Int32>, Nullable<Double>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical CreateDateTimeOffset EDM function to create a new DateTimeOffset object. |
| CreateTime(Nullable<Int32>, Nullable<Int32>, Nullable<Double>) |
When used as part of a LINQ to Entities query, this method invokes the canonical CreateTime EDM function to create a new TimeSpan object. |
| DiffDays(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffDays EDM function to calculate the number of days between two date/times. |
| DiffDays(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffDays EDM function to calculate the number of days between two date/times. |
| DiffHours(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffHours EDM function to calculate the number of hours between two date/times. |
| DiffHours(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffHours EDM function to calculate the number of hours between two date/times. |
| DiffHours(Nullable<TimeSpan>, Nullable<TimeSpan>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffHours EDM function to calculate the number of hours between two time spans. |
| DiffMicroseconds(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMicroseconds EDM function to calculate the number of microseconds between two date/times. |
| DiffMicroseconds(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMicroseconds EDM function to calculate the number of microseconds between two date/times. |
| DiffMicroseconds(Nullable<TimeSpan>, Nullable<TimeSpan>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMicroseconds EDM function to calculate the number of microseconds between two time spans. |
| DiffMilliseconds(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMilliseconds EDM function to calculate the number of milliseconds between two date/times. |
| DiffMilliseconds(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMilliseconds EDM function to calculate the number of milliseconds between two date/times. |
| DiffMilliseconds(Nullable<TimeSpan>, Nullable<TimeSpan>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMilliseconds EDM function to calculate the number of milliseconds between two time spans. |
| DiffMinutes(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMinutes EDM function to calculate the number of minutes between two date/times. |
| DiffMinutes(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMinutes EDM function to calculate the number of minutes between two date/times. |
| DiffMinutes(Nullable<TimeSpan>, Nullable<TimeSpan>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMinutes EDM function to calculate the number of minutes between two time spans. |
| DiffMonths(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMonths EDM function to calculate the number of months between two date/times. |
| DiffMonths(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffMonths EDM function to calculate the number of months between two date/times. |
| DiffNanoseconds(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffNanoseconds EDM function to calculate the number of nanoseconds between two date/times. |
| DiffNanoseconds(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffNanoseconds EDM function to calculate the number of nanoseconds between two date/times. |
| DiffNanoseconds(Nullable<TimeSpan>, Nullable<TimeSpan>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffNanoseconds EDM function to calculate the number of nanoseconds between two time spans. |
| DiffSeconds(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffSeconds EDM function to calculate the number of seconds between two date/times. |
| DiffSeconds(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffSeconds EDM function to calculate the number of seconds between two date/times. |
| DiffSeconds(Nullable<TimeSpan>, Nullable<TimeSpan>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffSeconds EDM function to calculate the number of seconds between two time spans. |
| DiffYears(Nullable<DateTime>, Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffYears EDM function to calculate the number of years between two date/times. |
| DiffYears(Nullable<DateTimeOffset>, Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical DiffYears EDM function to calculate the number of years between two date/times. |
| GetTotalOffsetMinutes(Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical GetTotalOffsetMinutes EDM function to return the number of minutes that the given date/time is offset from UTC. This is generally between +780 and -780 (+ or - 13 hrs). |
| Left(String, Nullable<Int64>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Left EDM function to return a given number of the leftmost characters in a string. |
| Like(String, String, String) |
When used as part of a LINQ to Entities query, this method invokes the canonical Like EDM operator to match an expression. |
| Like(String, String) |
When used as part of a LINQ to Entities query, this method invokes the canonical Like EDM operator to match an expression. |
| Reverse(String) |
When used as part of a LINQ to Entities query, this method invokes the canonical Reverse EDM function to return a given string with the order of the characters reversed. |
| Right(String, Nullable<Int64>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Right EDM function to return a given number of the rightmost characters in a string. |
| StandardDeviation(IEnumerable<Decimal>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Double>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Int64>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Nullable<Decimal>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Nullable<Double>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Nullable<Int32>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviation(IEnumerable<Nullable<Int64>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDev EDM function to calculate the standard deviation of the collection. |
| StandardDeviationP(IEnumerable<Decimal>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Double>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Int64>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Nullable<Decimal>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Nullable<Double>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Nullable<Int32>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| StandardDeviationP(IEnumerable<Nullable<Int64>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical StDevP EDM function to calculate the standard deviation for the population. |
| Truncate(Nullable<Decimal>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Truncate EDM function to truncate the given value to the number of specified digits. |
| Truncate(Nullable<Double>, Nullable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Truncate EDM function to truncate the given value to the number of specified digits. |
| TruncateTime(Nullable<DateTime>) |
When used as part of a LINQ to Entities query, this method invokes the canonical TruncateTime EDM function to return the given date with the time portion cleared. |
| TruncateTime(Nullable<DateTimeOffset>) |
When used as part of a LINQ to Entities query, this method invokes the canonical TruncateTime EDM function to return the given date with the time portion cleared. |
| Var(IEnumerable<Decimal>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Double>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Int64>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Nullable<Decimal>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Nullable<Double>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Nullable<Int32>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| Var(IEnumerable<Nullable<Int64>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical Var EDM function to calculate the variance of the collection. |
| VarP(IEnumerable<Decimal>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Double>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Int32>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Int64>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Nullable<Decimal>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Nullable<Double>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Nullable<Int32>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
| VarP(IEnumerable<Nullable<Int64>>) |
When used as part of a LINQ to Entities query, this method invokes the canonical VarP EDM function to calculate the variance for the population. |
Applies to
Entity Framework