CREATETABLE#RandomNumbers (RandomNumber INT);INSERTINTO#RandomNumbers (RandomNumber)WITHRandomNumbersAS(SELECTCAST(1+(RAND(CHECKSUM(NEWID()))*99)ASINT)ASRandomNumberUNIONALLSELECTCAST(1+(RAND(CHECKSUM(NEWID()))*99)ASINT)FROMRandomNumbersWHERE(SELECTCOUNT(*)FROMRandomNumbers)<100)SELECTDISTINCTRandomNu...
在SQL Server中,我们可以使用CREATE TABLE语句来创建一个临时表,用于存储生成的随机数。以下是创建临时表的代码: CREATETABLE#RandomNumbers (IDINTIDENTITY(1,1),RandomNumberINT); 1. 2. 3. 4. 这段代码创建了一个名为#RandomNumbers的临时表,包含两列:ID和RandomNumber。其中,ID列用于自动生成序号,RandomNumb...
-- Create random numbers for the selected distributionsSELECTTOP(@NumberOfRNs) RandomUniform = URN--,RandomPoisson = dbo.RN_POISSON(@Lambda, URN),RandomBinomial = dbo.RN_MULTINOMIAL(@Binomial, URN) ,RandomDUniform = dbo.RN_MULTINOMIAL(@DUniform, URN) ,RandomMultinomial = dbo.RN_MULTINOMIAL(@M...
DECLARE @Upper INT; DECLARE @Lower INT This will create a random number between 1 and 9999 SET @Lower = 1 The lowest random number SET @Upper = 9999 The highest random number SELECT @Random = ROUND(((@Upper - @Lower -1) * RAND() + @Lower), 0) SET @Final = 'S-' + Right(Ye...
--表createtableRANDOM_NUMBER_TEMP ( ROW_NUMNUMBERdefault0notnull, RANDOM_NUMVARCHAR2(30)notnull)--typetype number_array_tistableofnumberindexbybinary_integer;--实现生成唯一随机数PROCEDUREINIT_RANDOM_NUMBRE(P_QUANTITYINNUMBER,--生成数量P_LENINNUMBER,--随机数长度STATUS OUTVARCHAR2, ...
-- Create random numbers for the selected distributions SELECT TOP (@NumberOfRNs) RandomUniform = URN --,RandomPoisson = dbo.RN_POISSON(@Lambda, URN) ,RandomBinomial = dbo.RN_MULTINOMIAL(@Binomial, URN) ,RandomDUniform = dbo.RN_MULTINOMIAL(@DUniform, URN) ...
(译者注:我将@NumberOfRNs 参数由100W改成1W,因为100W在测试中占用的时间过长,如果你喜欢,可以随意改动。) 下面是测试工具,为了我们期望的目标分布生成NURNs(非均匀分布随机数): -- Create random numbers for the selected distributions SELECT TOP (@NumberOfRNs) ...
使用NEWID()函数生成一个唯一标识符(GUID)作为随机数种子。 使用CHECKSUM()函数将GUID转换为整数类型的随机数。 以下是一个示例查询,演示如何在SQL Server中生成稳定的随机数: 代码语言:txt 复制 SELECT ABS(CHECKSUM(NEWID())) AS RandomNumber 该查询将返回一个非负整数类型的随机数。使用ABS()函数可以确保生成...
1. Using NEWID as base string & NEWID to generate a random lengthBasic IdeaCreate random string using the function NEWID (), this will give us a random 36 characters string. Create a random number using the function NEWID, as the string length. Cut the string using the function LEFT...
SQL Server 自 2008 版起引入了 uniqueidentifier 字段，它存储的是一个 UUID, 或者叫 GUID，内部存储...