Question

我真的不确定为什么我收到这个错误，因为如果Table不在那里我创建它并且如果表存在那么它不应该进入这个查询部分那么为什么它要去再次进入它并尝试进行转换？

这是整个代码：

Use test
GO
    IF OBJECT_ID('MetricsServerAudit') IS NOT NULL
        BEGIN 
            CREATE TABLE  #TEMP ([TIME] nvarchar(max) NULL,[DATE] nvarchar(max) NULL,[USER_LOGIN] nvarchar(max) NULL,[USER_NAME] nvarchar(max) NULL,[MODEL_NAME] nvarchar(max) NULL,[SCORECARD_IDENTIFIER] nvarchar(max) NULL,  [SCORECARD_NAME] nvarchar(max) NULL,[ELEMENT_IDENTIFIER] nvarchar(max) NULL,[ELEMENT_NAME] nvarchar(max) NULL,[SERIES_IDENTIFIER] nvarchar(max) NULL,[SERIES_NAME] nvarchar(max) NULL,[PERIOD_NAME] nvarchar(max) NULL,[ACTION_TYPE] nvarchar(max) NULL,[ACTION] nvarchar(max) NULL,[PREVIOUS_VALUE] nvarchar(max) NULL,[VALUE] nvarchar(max) NULL,[UNIT] nvarchar(max) NULL)

                    BULK INSERT #TEMP FROM 'C:\QPR_Logs\Audit\MetricsServerAudit.txt'
                    WITH (FIELDTERMINATOR ='\t', ROWTERMINATOR = '\r', FIRSTROW = 2, KEEPNULLS)

                    UPDATE #TEMP SET [DATE]= REPLACE(CONVERT(VARCHAR(11),[DATE],103),'/' ,'-') 
                    ALTER TABLE #TEMP ALTER COLUMN [DATE] DATE
                    UPDATE #TEMP SET [TIME] = '12:00:00' Where [TIME] = ''
                    UPDATE #TEMP SET [TIME] = REPLACE(REPLACE(REPLACE([TIME], CHAR(10), ''), CHAR(13), ''), CHAR(9), '')
                    UPDATE #TEMP SET [TIME] = REPLACE([TIME], '/', ':')
                    UPDATE #TEMP SET [TIME] = left([TIME], 8)
                    UPDATE #TEMP SET [DATE] = '2015-01-01' Where [DATE] is null


                    INSERT INTO [dbo].[MetricsServerAudit]([DateStamp],[TIME],[DATE],[USER_LOGIN],[USER_NAME],[MODEL_NAME],[SCORECARD_IDENTIFIER],[SCORECARD_NAME],[ELEMENT_IDENTIFIER],[ELEMENT_NAME],[SERIES_IDENTIFIER],[SERIES_NAME],[PERIOD_NAME],[ACTION_TYPE],[ACTION],[PREVIOUS_VALUE],[VALUE],[UNIT])
                    SELECT CONCAT([DATE],'', [TIME]) AS [DateStamp], [TIME],[DATE],[USER_LOGIN],[USER_NAME],[MODEL_NAME],[SCORECARD_IDENTIFIER],[SCORECARD_NAME],[ELEMENT_IDENTIFIER],[ELEMENT_NAME],[SERIES_IDENTIFIER],[SERIES_NAME],[PERIOD_NAME],[ACTION_TYPE],[ACTION],[PREVIOUS_VALUE],[VALUE],[UNIT]
                    FROM #TEMP
                    WHERE NOT EXISTS(SELECT [TIME] FROM [dbo].[MetricsServerAudit] WHERE [TIME] = [TIME])
                    DROP TABLE #TEMP
        END

GO --SEPERATOR 
    IF (OBJECT_ID('MetricsServerAudit') IS NULL and OBJECT_ID('tempdb..#TEMP') IS NULL)
        BEGIN 
            CREATE TABLE  MetricsServerAudit ([DateStamp] nvarchar(max) NULL, [TIME] nvarchar(max) NULL,[DATE] date NULL,[USER_LOGIN] nvarchar(max) NULL,[USER_NAME] nvarchar(max) NULL,[MODEL_NAME] nvarchar(max) NULL,[SCORECARD_IDENTIFIER] nvarchar(max) NULL,[SCORECARD_NAME] nvarchar(max) NULL,[ELEMENT_IDENTIFIER] nvarchar(max) NULL,[ELEMENT_NAME] nvarchar(max) NULL,[SERIES_IDENTIFIER] nvarchar(max) NULL,[SERIES_NAME] nvarchar(max) NULL,[PERIOD_NAME] nvarchar(max) NULL,[ACTION_TYPE] nvarchar(max) NULL,[ACTION] nvarchar(max) NULL,[PREVIOUS_VALUE] nvarchar(max) NULL,[VALUE] nvarchar(max) NULL,[UNIT] nvarchar(max) NULL)
            CREATE TABLE  #TEMP ([TIME] nvarchar(max) NULL,[DATE] nvarchar(max) NULL,[USER_LOGIN] nvarchar(max) NULL,[USER_NAME] nvarchar(max) NULL,[MODEL_NAME] nvarchar(max) NULL,[SCORECARD_IDENTIFIER] nvarchar(max) NULL,  [SCORECARD_NAME] nvarchar(max) NULL,[ELEMENT_IDENTIFIER] nvarchar(max) NULL,[ELEMENT_NAME] nvarchar(max) NULL,[SERIES_IDENTIFIER] nvarchar(max) NULL,[SERIES_NAME] nvarchar(max) NULL,[PERIOD_NAME] nvarchar(max) NULL,[ACTION_TYPE] nvarchar(max) NULL,[ACTION] nvarchar(max) NULL,[PREVIOUS_VALUE] nvarchar(max) NULL,[VALUE] nvarchar(max) NULL,[UNIT] nvarchar(max) NULL)

                    BULK INSERT #TEMP FROM 'C:\QPR_Logs\Audit\MetricsServerAudit.txt'
                    WITH (FIELDTERMINATOR ='\t', ROWTERMINATOR = '\r', FIRSTROW = 2, KEEPNULLS)

                    UPDATE #TEMP SET [DATE]= REPLACE(CONVERT(VARCHAR(11),[DATE],103),'/' ,'-') 
                    ALTER TABLE #TEMP ALTER COLUMN [DATE] DATE
                    UPDATE #TEMP SET [TIME] = '12:00:00' Where [TIME] = ''
                    UPDATE #TEMP SET [TIME] = REPLACE(REPLACE(REPLACE([TIME], CHAR(10), ''), CHAR(13), ''), CHAR(9), '')
                    UPDATE #TEMP SET [TIME] = REPLACE([TIME], '/', ':')
                    UPDATE #TEMP SET [TIME] = left([TIME], 8)
                    UPDATE #TEMP SET [DATE] = '2015-01-01' Where [DATE] is null                 


                    INSERT INTO [dbo].[MetricsServerAudit]([DateStamp],[TIME],[DATE],[USER_LOGIN],[USER_NAME],[MODEL_NAME],[SCORECARD_IDENTIFIER],[SCORECARD_NAME],[ELEMENT_IDENTIFIER],[ELEMENT_NAME],[SERIES_IDENTIFIER],[SERIES_NAME],[PERIOD_NAME],[ACTION_TYPE],[ACTION],[PREVIOUS_VALUE],[VALUE],[UNIT])
                    SELECT CONCAT([DATE],'', [TIME]) AS [DateStamp],[TIME],[DATE],[USER_LOGIN],[USER_NAME],[MODEL_NAME],[SCORECARD_IDENTIFIER],[SCORECARD_NAME],[ELEMENT_IDENTIFIER],[ELEMENT_NAME],[SERIES_IDENTIFIER],[SERIES_NAME],[PERIOD_NAME],[ACTION_TYPE],[ACTION],[PREVIOUS_VALUE],[VALUE],[UNIT]
                    FROM #TEMP
                    DROP TABLE #TEMP

                    IF (NOT EXISTS(select COLUMN_NAME from INFORMATION_SCHEMA.COLUMNS WHERE COLUMN_NAME = '[DateStamp]' AND DATA_TYPE = 'DATETIME' AND TABLE_NAME = 'MetricsServerAudit'))
                            BEGIN
                                UPDATE [dbo].[MetricsServerAudit] SET [DateStamp] = CONVERT(DATETIME,(SUBSTRING([DateStamp],1,10)+' '+SUBSTRING([DateStamp],11,15)))
                                ALTER TABLE [dbo].[MetricsServerAudit] ALTER COLUMN [DateStamp] DATETIME
                            END
        END

这是出现错误的部分：

UPDATE [dbo].[MetricsServerAudit] SET [DateStamp] = CONVERT(DATETIME,(SUBSTRING([DateStamp],1,10)+' '+SUBSTRING([DateStamp],11,15)))

它位于整个代码的第4行。

这是完整的错误：

Msg 8116，Level 16，State 1，Line 51
对于子字符串函数的参数1，参数数据类型datetime无效。

任何人都可以告诉我为什么会这样做以及如何解决它？

Answer 1

这是一个编译错误。如果MetricsServerAudit.DateStamp存在并且是日期时间，则此代码不会编译，因为子字符串不允许将datetime作为其第一个参数。您的选择是：

将此代码放入存储过程中，以便只编译一次或
添加另一个转换，以便您只将varchar传递给子字符串，例如：CONVERT(DATETIME, SUBSTRING(CONVERT(VARCHAR, [DateStamp])..

T-SQL错误：参数数据类型datetime对于子字符串函数

1 个答案: