как записать функцию числа в слово на сервере sql

Рассмотрите возможность использования таблицы вспомогательных чисел.

Примечание: это MS SQL

Создайте таблицу последовательности. Она может включать все нужные вам числа или, по крайней мере, до 999. Я ограничил ее до минимума, но это добавляет дополнительную логику.

CREATE TABLE [dbo].[Sequence]
    (
      seq INTEGER NOT NULL UNIQUE,
      word [varchar](25) NOT NULL
    )

INSERT INTO [Sequence] SELECT 0, ''
INSERT INTO [Sequence] SELECT 1, 'One'
INSERT INTO [Sequence] SELECT 2, 'Two'
INSERT INTO [Sequence] SELECT 3, 'Three'
INSERT INTO [Sequence] SELECT 4, 'Four'
INSERT INTO [Sequence] SELECT 5, 'Five'
INSERT INTO [Sequence] SELECT 6, 'Six'
INSERT INTO [Sequence] SELECT 7, 'Seven'
INSERT INTO [Sequence] SELECT 8, 'Eight'
INSERT INTO [Sequence] SELECT 9, 'Nine'

INSERT INTO [Sequence] SELECT 10, 'Ten'
INSERT INTO [Sequence] SELECT 11, 'Eleven'
INSERT INTO [Sequence] SELECT 12, 'Twelve'
INSERT INTO [Sequence] SELECT 13, 'Thirteen'
INSERT INTO [Sequence] SELECT 14, 'Fourteen'
INSERT INTO [Sequence] SELECT 15, 'Fifteen'
INSERT INTO [Sequence] SELECT 16, 'Sixteen'
INSERT INTO [Sequence] SELECT 17, 'Seventeen'
INSERT INTO [Sequence] SELECT 18, 'Eighteen'
INSERT INTO [Sequence] SELECT 19, 'Nineteen'

INSERT INTO [Sequence] SELECT 20, 'Twenty'
INSERT INTO [Sequence] SELECT 30, 'Thirty'
INSERT INTO [Sequence] SELECT 40, 'Forty'
INSERT INTO [Sequence] SELECT 50, 'Fifty'
INSERT INTO [Sequence] SELECT 60, 'Sixty'
INSERT INTO [Sequence] SELECT 70, 'Seventy'
INSERT INTO [Sequence] SELECT 80, 'Eighty'
INSERT INTO [Sequence] SELECT 90, 'Ninty'

Затем создайте пользовательскую функцию.

CREATE FUNCTION dbo.udf_NumToWords ( 
                @num AS INTEGER 
)       RETURNS VARCHAR(50)
AS
BEGIN

DECLARE @words AS VARCHAR(50)

IF      @num =     0 SELECT @words = 'Zero'
ELSE IF @num <    20 SELECT @words = word FROM sequence WHERE seq = @num
ELSE IF @num <   100 (SELECT @words = TTens.word + ' ' + TUnits.word 
                      FROM Sequence AS TUnits
                     CROSS JOIN Sequence AS TTens
                     WHERE TUnits.seq = (@num % 100) % 10
                       AND TTens.seq = (@num % 100) - (@num % 100) % 10 
                    )
ELSE IF @num =   100 (SELECT @words = THundreds.word + ' Hundred'
                      FROM Sequence AS THundreds
                     WHERE THundreds.seq = (@num / 100)
                    )
ELSE IF @num <  1000 (
                    SELECT @words = THundreds.word + ' Hundred and ' 
                                    + TTens.word + ' ' + TUnits.word 
                      FROM Sequence AS TUnits
                     CROSS JOIN Sequence AS TTens
                     CROSS JOIN Sequence AS THundreds
                     WHERE TUnits.seq = (@num % 100) % 10
                       AND TTens.seq = (@num % 100) - (@num % 100) % 10 
                       AND THundreds.seq = (@num / 100)
                    )
ELSE IF @num =  1000 (SELECT @words = TThousand.word + ' Thousand'
                      FROM Sequence AS TThousand
                     WHERE TThousand.seq = (@num / 1000)
                    )
ELSE IF @num < 10000 (
                    SELECT @words = TThousand.word + ' Thousand ' 
                                    + THundreds.word + ' Hundred and ' 
                                    + TTens.word + ' ' + TUnits.word 
                      FROM Sequence AS TUnits
                     CROSS JOIN Sequence AS TTens
                     CROSS JOIN Sequence AS THundreds
                     CROSS JOIN Sequence AS TThousand
                     WHERE TUnits.seq = (@num % 100) % 10
                       AND TTens.seq = (@num % 100) - (@num % 100) % 10 
                       AND THundreds.seq = (@num / 100) - (@num / 1000) * 10
                       AND TThousand.seq = (@num / 1000)
                    )
ELSE SELECT @words = STR(@num)

RETURN @words

END

Теперь тестовая функция:

SELECT NumberAsWords = dbo.udf_NumToWords(888);

Это небольшая модификация приведенного выше ответа Эндрю (все кредиты Эндрю), но это вернет результаты в запросе sql без использования какой-либо функции.

    WITH Sequence
AS (
    SELECT 0 seq
        ,'' word

    UNION ALL

    SELECT 1
        ,'One'

    UNION ALL

    SELECT 2
        ,'Two'

    UNION ALL

    SELECT 3
        ,'Three'

    UNION ALL

    SELECT 4
        ,'Four'

    UNION ALL

    SELECT 5
        ,'Five'

    UNION ALL

    SELECT 6
        ,'Six'

    UNION ALL

    SELECT 7
        ,'Seven'

    UNION ALL

    SELECT 8
        ,'Eight'

    UNION ALL

    SELECT 9
        ,'Nine'

    UNION ALL

    SELECT 10
        ,'Ten'

    UNION ALL

    SELECT 11
        ,'Eleven'

    UNION ALL

    SELECT 12
        ,'Twelve'

    UNION ALL

    SELECT 13
        ,'Thirteen'

    UNION ALL

    SELECT 14
        ,'Fourteen'

    UNION ALL

    SELECT 15
        ,'Fifteen'

    UNION ALL

    SELECT 16
        ,'Sixteen'

    UNION ALL

    SELECT 17
        ,'Seventeen'

    UNION ALL

    SELECT 18
        ,'Eighteen'

    UNION ALL

    SELECT 19
        ,'Nineteen'

    UNION ALL

    SELECT 20
        ,'Twenty'

    UNION ALL

    SELECT 30
        ,'Thirty'

    UNION ALL

    SELECT 40
        ,'Forty'

    UNION ALL

    SELECT 50
        ,'Fifty'

    UNION ALL

    SELECT 60
        ,'Sixty'

    UNION ALL

    SELECT 70
        ,'Seventy'

    UNION ALL

    SELECT 80
        ,'Eighty'

    UNION ALL

    SELECT 90
        ,'Ninty'
    )
    ,CTENumbers
AS (
    SELECT 0 AS num  --changezero to your starting number

    UNION ALL

    SELECT num + 1  
    FROM CTENumbers
    WHERE num + 1 <= 255 --change 255 to upper limit
    )
SELECT *
    ,CASE 
        WHEN num = 0
            THEN 'Zero'
        WHEN num < 20
            THEN (
                    SELECT word
                    FROM sequence
                    WHERE seq = num
                    )
        WHEN num < 100
            THEN (
                    SELECT TTens.word + ' ' + TUnits.word
                    FROM Sequence AS TUnits
                    CROSS JOIN Sequence AS TTens
                    WHERE TUnits.seq = (num % 100) % 10
                        AND TTens.seq = (num % 100) - (num % 100) % 10
                    )
        WHEN num < 1000
            THEN (
                    SELECT THundreds.word + ' Hundred and ' + TTens.word + ' ' + TUnits.word
                    FROM Sequence AS TUnits
                    CROSS JOIN Sequence AS TTens
                    CROSS JOIN Sequence AS THundreds
                    WHERE TUnits.seq = (num % 100) % 10
                        AND TTens.seq = (num % 100) - (num % 100) % 10
                        AND THundreds.seq = (num / 100)
                    )
        WHEN num = 1000
            THEN (
                    SELECT TThousand.word + ' Thousand'
                    FROM Sequence AS TThousand
                    WHERE TThousand.seq = (num / 1000)
                    )
        WHEN num < 10000
            THEN (
                    SELECT TThousand.word + ' Thousand ' + THundreds.word + ' Hundred and ' + TTens.word + ' ' + TUnits.word
                    FROM Sequence AS TUnits
                    CROSS JOIN Sequence AS TTens
                    CROSS JOIN Sequence AS THundreds
                    CROSS JOIN Sequence AS TThousand
                    WHERE TUnits.seq = (num % 100) % 10
                        AND TTens.seq = (num % 100) - (num % 100) % 10
                        AND THundreds.seq = (num / 100) - (num / 1000) * 10
                        AND TThousand.seq = (num / 1000)
                    )
        ELSE STR(num)
        END Number
FROM CTENumbers
OPTION (MAXRECURSION 10000)

Просто, если это поможет кому-то, вы можете создать таблицу чисел и заполнить ее с помощью языка на стороне сервера, такого как С#. Вы также можете использовать библиотеку Humanizer для преобразования чисел в слова; он также поддерживает локализации.

ТАБЛИЦА SQL

CREATE TABLE [Numbers](
[n] [bigint] NOT NULL,
[InWords] [nvarchar](50) NULL,
)

Код С#

Требуется Humanizer

var db = new MyDbContext();
for (int i = 1; i < 1000; i++)
{
db.Database.ExecuteSqlCommand($"INSERT INTO Numbers (n, InWords) VALUES({i}, '{i.ToWords()}')");
}