Question

我正在尝试更新表格，特别是电话号码。

我制作了两个程序（也转换为函数）：

CreateRandomMobileNumber

    ALTER procedure [dbo].[GetRandomMobileNumber](
         @min AS BIGINT,
         @max AS BIGINT,
         @mobile_num AS VARCHAR(20)
    ) AS BEGIN
        SELECT @min = 1, @max = 99999999

        SELECT @mobile_num = CAST(CAST(((@max + 1) - @min) * Rand() + @min as bigint) as varchar(15))
        SELECT @mobile_num = '04' + ' ' + SUBSTRING(@mobile_num, 1, 4) + ' ' + RIGHT(@mobile_num,4)
        SELECT @mobile_num
    END

CreateRandomPhoneNumber

   ALTER procedure [dbo].[GetRandomPhoneNumber](
         @min AS BIGINT,
         @max AS BIGINT,
         @phone_num AS VARCHAR(20)
    ) 
    AS
    BEGIN
        SELECT @min = 1, @max = 99999999
        Select @phone_num = CAST(CAST(((@max + 1) - @min) * Rand() + @min as bigint) as varchar(15))
        SELECT @phone_num = 
            CASE 
                WHEN LEFT(@phone_num, 1) BETWEEN 1 AND 6 
                    THEN  '02' + ' ' + SUBSTRING(@phone_num, 1, 4) + ' ' + RIGHT(@phone_num,4)
                WHEN LEFT(@phone_num, 1) BETWEEN 7 AND 8
                    THEN  '03' + ' ' + SUBSTRING(@phone_num, 1, 4) + ' ' + RIGHT(@phone_num,4)
                    ELSE  '07' + ' ' + SUBSTRING(@phone_num, 1, 4) + ' ' + RIGHT(@phone_num,4)
            END
        SELECT @phone_num
    END

我想要做的是能够在更新时调用这些，这是插入语句：

; WITH CTE AS
(

    SELECT *, rn = ROW_NUMBER() OVER ( ORDER BY newid() )
    FROM anon_PersonChangeData
)
UPDATE c1
SET   c1.personNewGender        = c2.personCurrentGender
    , c1.personNewFirstName     = c2.personCurrentFirstName
    , c1.personNewSurname       = c3.personCurrentSurname 
    , c1.personNewHomeEmail     = CASE 
                                WHEN c1.personStatus IN ('both', 'candidate') AND c1.personCurrentFirstName LIKE '%p%'
                                    THEN c2.personCurrentFirstName + '.' + c3.personCurrentSurname + '@yoohoo.com'
                                WHEN c1.personStatus IN ('both', 'candidate') AND c1.personCurrentFirstName LIKE '%e%'
                                    THEN c2.personCurrentFirstName + '.' + c3.personCurrentSurname + '@hatmail.com'
                                ELSE     c2.personCurrentFirstName + '.' + c3.personCurrentSurname + '@gmoil.com'
                              END
    , c1.personNewWorkEmail = NULL
    , c1.personNewHomePhone = dbo.GetRandomPhoneNumber
    , c1.personNewWorkPhone = NULL
    , c1.personNewMobilePhone = dbo.GetRandomMobileNumber
FROM CTE c1
    INNER JOIN CTE c2   ON c1.rn = c2.rn
    INNER JOIN CTE c3   ON c2.rn = c3.rn

我尝试了一些不同的东西，我的功能版本一直给我以下错误：

在函数中无效使用副作用运算符'rand'。

非常感谢任何帮助。

Answer 1

这是一种简单的方法，使用＆＃34;内联计数表＆＃34;设置要生成的数量和 ABS（CHECKSUM（NEWID（）））％N 以生成随机数。在这种情况下，我设置1000000000和9999999999之间的界限（因为我们想要10位数...

WITH 
    cte_n1 (n) AS (SELECT 1 FROM (VALUES (1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) n (n)), 
    cte_n2 (n) AS (SELECT 1 FROM cte_n1 a CROSS JOIN cte_n1 b),     -- 100 rows
    cte_n3 (n) AS (SELECT 1 FROM cte_n2 a CROSS JOIN cte_n2 b),     -- 10,000 rows
    cte_Tally (n) AS (
        SELECT TOP 20 -- set the number of row you wanr here...
            ROW_NUMBER() OVER (ORDER BY (SELECT NULL))
        FROM
            cte_n3 a CROSS JOIN cte_n3 b                            -- 100,000,000 rows
        )
SELECT 
    PhoneFormatted = '(' + STUFF(STUFF(pn.PhoneNumber, 7, 0, '-'), 4, 0, ') ')
FROM
    cte_Tally
    CROSS APPLY ( VALUES (CAST(ABS(CHECKSUM(NEWID())) % 9999999999 + 1000000001 AS VARCHAR(14))) ) pn (PhoneNumber);

结果......

PhoneFormatted
-------------------
(165) 103-7444
(288) 558-8646
(259) 635-8073
(277) 171-6645
(104) 265-1071
(119) 838-5696
(111) 378-0002
(202) 490-0627
(208) 400-6605
(101) 681-2601
(239) 842-7079
(257) 067-0305
(227) 761-1426
(171) 330-1550
(312) 728-6722
(108) 526-2654
(202) 573-9529
(205) 334-9711
(112) 345-8447
(202) 587-9164

最好的部分......它的速度很快......以下是将1M数字放入临时表的统计数据IO，时间。

SQL Server parse and compile time: 
   CPU time = 0 ms, elapsed time = 7 ms.

 SQL Server Execution Times:
   CPU time = 1392 ms,  elapsed time = 1224 ms.

(1000000 rows affected)

Answer 2

如果您想要一支班轮，可以使用以下方法：

SELECT TOP 500 PhoneNumber = FORMAT(ROUND(((9999999999 - 1111111111)*RAND(CAST(DATEDIFF(s,'1970-01-01 12:00:00',GETDATE()) As BIGINT)+(ROW_NUMBER() OVER(ORDER BY (SELECT(NULL)))) ) + 1111111111),0),'(###) ###-####')
FROM anytable;

随机电话号码生成器

2 个答案: