public static SqlExpression DateTimeAddMonths(SqlExpression _this,
[Type(typeof(int))] SqlExpression value)
{
return(SqlDml.DateTimeAddMonths(_this, value));
}
private static SqlExpression DateTimeOffsetTruncate(SqlExpression dateTimeOffset) =>
SqlDml.Cast(
SqlDml.Cast(dateTimeOffset, new SqlValueType(SqlDateTypeName)),
new SqlValueType(SqlDateTime2TypeName));
private static SqlExpression DateTimeOffsetPartOffset(SqlExpression dateTimeOffset) =>
SqlDml.DateTimeOffsetMinusDateTimeOffset(
DateTimeOffsetTruncateOffset(dateTimeOffset),
Switchoffset(dateTimeOffset, UtcTimeZone));
protected static SqlUserFunctionCall DateAddSecond(SqlExpression date, SqlExpression seconds)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("SECOND"), seconds, date));
}
protected static SqlUserFunctionCall BitXor(SqlExpression left, SqlExpression right)
{
return(SqlDml.FunctionCall("BIN_XOR", left, right));
}
protected static SqlUserFunctionCall DateAddMonth(SqlExpression date, SqlExpression months)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("MONTH"), months, date));
}
protected static SqlUserFunctionCall DateAddHour(SqlExpression date, SqlExpression hours)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("HOUR"), hours, date));
}
public static SqlExpression DateTimeMillisecond(SqlExpression _this)
{
return(ExpressionTranslationHelpers.ToInt(SqlDml.Extract(SqlDateTimePart.Millisecond, _this)));
}
public static SqlExpression DateTimeTimeOfDay(SqlExpression _this)
{
return(SqlDml.DateTimeMinusDateTime(_this, SqlDml.DateTimeTruncate(_this)));
}
public static SqlExpression DateTimeNow()
{
return(SqlDml.CurrentTimeStamp());
}
public static SqlExpression DateTimeToday()
{
return(SqlDml.CurrentDate());
}
public static SqlExpression DateTimeSubtractDateTime(SqlExpression _this,
[Type(typeof(DateTime))] SqlExpression value)
{
return(SqlDml.DateTimeMinusDateTime(_this, value));
}
public static SqlExpression DateTimeSubtractTimeSpan(SqlExpression _this,
[Type(typeof(TimeSpan))] SqlExpression value)
{
return(SqlDml.DateTimeMinusInterval(_this, value));
}
public static SqlExpression DateTimeAddMilliseconds(SqlExpression _this,
[Type(typeof(double))] SqlExpression value)
{
return(SqlDml.DateTimePlusInterval(_this, TimeSpanCompilers.TimeSpanFromMilliseconds(value)));
}
protected static SqlUserFunctionCall DateDiffMillisecond(SqlExpression date1, SqlExpression date2)
{
return(SqlDml.FunctionCall("DATEDIFF", SqlDml.Native("MILLISECOND"), date1, date2));
}
public static SqlExpression DateTimeDate(SqlExpression _this)
{
return(SqlDml.DateTimeTruncate(_this));
}
protected static SqlUserFunctionCall DateAddYear(SqlExpression date, SqlExpression years)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("YEAR"), years, date));
}
public static SqlExpression DateTimeDayOfYear(SqlExpression _this)
{
return(ExpressionTranslationHelpers.ToInt(SqlDml.Extract(SqlDateTimePart.DayOfYear, _this)));
}
protected static SqlUserFunctionCall DateAddDay(SqlExpression date, SqlExpression days)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("DAY"), days, date));
}
/// <summary>
/// Converts the specified interval expression to expression
/// that represents number of milliseconds in that interval.
/// This is a generic implementation via <see cref="SqlExtract"/>s.
/// It's suitable for any server, but can be inefficient.
/// </summary>
/// <param name="interval">The interval to convert.</param>
/// <returns>Result of conversion.</returns>
public static SqlExpression IntervalToNanoseconds(SqlExpression interval)
{
var nanoseconds = SqlDml.Extract(SqlIntervalPart.Nanosecond, interval);
return(IntervalToMilliseconds(interval) * 1000000L + nanoseconds);
}
protected static SqlUserFunctionCall DateAddMinute(SqlExpression date, SqlExpression minutes)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("MINUTE"), minutes, date));
}
/// <summary>
/// Performs banker's rounding on the speicified argument
/// to a specified number of fractional digits.
/// </summary>
/// <param name="value">The value to round.</param>
/// <param name="digits">The digits.</param>
/// <returns>Result of rounding.</returns>
public static SqlExpression BankersRound(SqlExpression value, SqlExpression digits)
{
var scale = SqlDml.Power(10, digits);
return(BankersRound(value * scale) / scale);
}
protected static SqlUserFunctionCall DateAddMillisecond(SqlExpression date, SqlExpression milliseconds)
{
return(SqlDml.FunctionCall("DATEADD", SqlDml.Native("MILLISECOND"), milliseconds, date));
}
/// <summary>
/// Performs "rounding as tought in school" on the specified argument
/// to a specified number of fractional digits.
/// </summary>
/// <param name="argument">The value to round.</param>
/// <param name="digits">The digits.</param>
/// <returns>Result of rounding.</returns>
public static SqlExpression RegularRound(SqlExpression argument, SqlExpression digits)
{
var scale = SqlDml.Power(10, digits);
return(RegularRound(argument * scale) / scale);
}
protected static SqlUserFunctionCall BitNot(SqlExpression operand)
{
return(SqlDml.FunctionCall("BIN_NOT", operand));
}
protected static SqlCast CastToLong(SqlExpression arg)
{
return(SqlDml.Cast(arg, SqlType.Int64));
}
private static SqlExpression DateTimeOffsetTruncateOffset(SqlExpression dateTimeOffset) => SqlDml.Cast(dateTimeOffset, SqlType.DateTime);
protected static SqlUserFunctionCall DateDiffDay(SqlExpression date1, SqlExpression date2)
{
return(SqlDml.FunctionCall("DATEDIFF", SqlDml.Native("DAY"), date1, date2));
}
private static SqlExpression DateTimeOffsetTimeOfDay(SqlExpression dateTimeOffset) =>
DateDiffMillisecond(
SqlDml.Native("'00:00:00.0000000'"),
SqlDml.Cast(dateTimeOffset, new SqlValueType("time")))
* NanosecondsPerMillisecond;
public static SqlExpression DateTimeOperatorSubtractionDateTime(
[Type(typeof(DateTime))] SqlExpression d1,
[Type(typeof(DateTime))] SqlExpression d2)
{
return(SqlDml.DateTimeMinusDateTime(d1, d2));
}
