używać tej funkcji do konwersji daty gregoriański do Hidżry (Shamsi) Data z wymaganym formacie:
CREATE FUNCTION [dbo].[ShamsiDate]
(
@ChirsDate SMALLDATETIME
)
RETURNS CHAR(10)
AS
BEGIN
DECLARE @SolarDate CHAR(10)
DECLARE @Day CHAR(2)
DECLARE @Mon CHAR(2)
DECLARE @SDay INT
DECLARE @SMon INT
DECLARE @SYear INT
SET @SYear = dbo.ShamsiDatePart(@ChirsDate, 'Y')
SET @SMon = dbo.ShamsiDatePart(@ChirsDate, 'M')
SET @SDay = dbo.ShamsiDatePart(@ChirsDate, 'D')
IF @SMon <= 9
SELECT @Mon = '0' + CONVERT(CHAR(1), @SMon)
ELSE
SELECT @Mon = CONVERT(CHAR(2), @SMon)
IF @SDay <= 9
SELECT @Day = '0' + CONVERT(CHAR(1), @SDay)
ELSE
SELECT @Day = CONVERT(CHAR(2), @SDay)
SELECT @SolarDate = CONVERT(CHAR(4), @SYear) + '/' + @Mon + '/'
+ @Day
RETURN @SolarDate
END
CREATE FUNCTION [dbo].[ShamsiDatePart]
(
@MiDate DATETIME ,
@ADatePart CHAR
)
RETURNS INT
AS
BEGIN
DECLARE @TmpY INT ,
@Leap INT
DECLARE @Sh_Y INT ,
@Sh_M INT ,
@Sh_D INT ,
@Result INT
IF @MiDate IS NULL
RETURN 0
DECLARE @Result INT
SET @Result = CONVERT(INT, CONVERT(FLOAT, @MiDate))
IF @Result <= 78
BEGIN
SET @Sh_Y = 1278
SET @Sh_M = (@Result + 10)/30 + 10
SET @Sh_D = (@Result + 10) % 30 + 1
END
ELSE
BEGIN
SET @Result = @Result - 78
SET @Sh_Y = 1279
WHILE 1 = 1
BEGIN
SET @TmpY = @Sh_Y + 11
SET @TmpY = @TmpY - (@TmpY/33) * 33
IF (@TmpY <> 32)
AND ((@TmpY/4) * 4 = @TmpY)
SET @Leap = 1
ELSE
SET @Leap = 0
IF @Result <= (365 + @Leap)
BREAK
SET @Result = @Result - (365 + @Leap)
SET @Sh_Y = @Sh_Y + 1
END
IF @Result <= 31 * 6
BEGIN
SET @Sh_M = (@Result - 1)/31 + 1
SET @Sh_D = (@Result - 1) % 31 + 1
END
ELSE
BEGIN
SET @Sh_M = ((@Result - 1) - 31 * 6)/30 + 7
SET @Sh_D = ((@Result - 1) - 31 * 6) % 30 + 1
END
END
RETURN CASE @ADatePart WHEN 'Y' THEN @Sh_Y WHEN 'M' THEN @Sh_M WHEN 'D' THEN @Sh_D ELSE 0 END
END
Dzięki @ElectricLlama! –