35 lines
879 B
Transact-SQL
35 lines
879 B
Transact-SQL
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ALTER PROCEDURE [dbo].[SpGetNewCode3]
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@tableName VARCHAR(50),/*表名*/
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@columnName VARCHAR(50),/*列名*/
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@prefix VARCHAR(100),/*流水号编码前缀*/
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@returnVal NVARCHAR(200) OUTPUT
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AS
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/*获取一个新的流水号（后三位上增加）*/
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DECLARE
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@sql NVARCHAR(500),
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@old NVARCHAR(50),
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@newid VARCHAR(50),
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@prefix2 NVARCHAR(100),
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@maxId NVARCHAR(50)/*已分配的最大值*/
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SET @prefix2= REPLACE(@prefix, @columnName, '')
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SELECT @sql=N'SELECT @maxId=MAX('+@columnName+') from '+@tableName+' where ' + @columnName + ' like ' + '''' + @prefix2 + '%'''
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EXEC sp_executesql @sql, N'@maxId nvarchar(50) OUTPUT', @maxId OUTPUT
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SET @old=@maxId
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IF(@old IS NULL)
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BEGIN
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SET @newid=@prefix+'001'
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END
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ELSE
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BEGIN
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SET @newid = (SELECT MAX(RIGHT(@old,3)))+1
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SET @newid = @prefix +RIGHT('000'+@newid,3)
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END
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SET @returnVal=@newid
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GO
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