SQL 参数数据类型日期时间对子字符串函数的参数 1 无效答案

【问题标题】：SQL Argument data type datetime is invalid for argument 1 of substring functionSQL 参数数据类型日期时间对子字符串函数的参数 1 无效
【发布时间】：2015-10-26 20:15:42
【问题描述】：

我正在尝试运行 sql 查询以将数据从一个表移动到另一个表，但我遇到了问题。这是我的查询：

TRUNCATE TABLE LIQ_ACCT_EOD_SIF

DECLARE @filedt varchar(32), @repdate int;
SET NOCOUNT ON


SET @filedt = CAST(getdate() as varchar);

select @repdate=CAST(right(S_ReportingDate, 4) + SUBSTRING(S_ReportingDate,4,2) + LEFT(S_ReportingDate, 2)
AS int)
FROM AllocationJunLLv2;

DELETE FROM dbo.LIQ_ACCT_EOD_SIF
WHERE REPORT_DATE=@repdate;


INSERT INTO dbo.LIQ_ACCT_EOD_SIF
(
 FILE_NUM
,FILE_DATE_TIME
,ROW_NUM
,FILE_TYPE
,MIGRATION_DATE
,INSTITUTION_NAME
,RESULT_TYPE_NAME
,SCENARIO_NAME
,REPORT_DATE
,ASSET_CLASS_NAME
,INSTRUMENT_TYPE_NAME
,INSTRUMENT_SUBTYPE_NAME
,INSTRUMENT_NAME
,COUNTERPARTY_NAME
,CORPORATE_RETAIL_FLG
,CLIENT_NAME
,DEPOSIT_FLG
,POSITION_FLG
,LIQUID_FLG
,LOCATION_NAME
,PORTFOLIO_NAME
,ACCOUNT_TYPE_NAME
,ACCOUNT_NUMBER
,ACCOUNT_OPENING_DATE
,INSTRUMENT_ISO_CURRENCY
,ISO_CURRENCY_CODE
,CURRENT_VALUE
,MATURITY_DATE
,MATURITY_VALUE
,DRAWN_AMOUNT
,UNDRAWN_AMOUNT
,LIMIT_AMOUNT
,EXPOSURE_CD
,EXPECTED_CASH_FLOW
,EXPECTED_CASH_FLOW_DATE
,PASSED_DUE_IND
,INT_TYPE
,INT_FIXED_RATE
,INT_VAR_BASENAME
,INT_REL_VAR_RATE
,RATING_NAME
,RATING_AGENCY
,BASEL_OPTION
,RATING_TYPE
,REPORT_LINE_NUMBER
,REPORT_LINE_NAME
,DELTA
,GAMMA
,NETTING_NUMBER
,COLLATERAL_ACCOUNT_NUMBER
,BUFFER_ELIGIBLE
,ALTERNATIVE_YIELD_RATE
,FTP_PORTFOLIO
,REPO_FLAG
,LIMIT_EXPIRY_DATE
,AL_DEFINITION
,REPO_AMOUNT
,TRANSACTION_NUMBER
,UNENCUMBERED_AMOUNT
,MARGIN_ACCOUNT_NUMBER
,CASH_FLOW_TYPE
,value_of_house
,security_value
,security_type
,int_rate_floor
,int_rate_ceiling
,lcr_line_number
,AMM_line_number
,BASEL_APPROACH
,CCR_portfolio
,CCR_sector
,CCR_region
)

SELECT
 1 AS FILE_NUM
,@filedt AS FILE_DATE_TIME
,0 AS ROW_NUM
,'EOD' AS FILE_TYPE
,getdate() AS MIGRATION_DATE    
,'UBNL' AS INSTITUTION_NAME 
,LEFT(b.STBITEM, 32) AS RESULT_TYPE_NAME
,'Unknown' AS SCENARIO_NAME
,@repdate AS REPORT_DATE
,ISNULL(rl.ASSET_CLASS_NAME, 'Unknown') AS ASSET_CLASS_NAME
,'Unknown' AS INSTRUMENT_TYPE_NAME
,'Unknown' AS INSTRUMENT_SUBTYPE_NAME
,'Unknown' AS INSTRUMENT_NAME
,LEFT(b.S_InstitutionCode, 32) AS COUNTERPARTY_NAME
,ISNULL(rl.CORPORATE_RETAIL_FLG, 'U')
,b.S_CustomerName AS CLIENT_NAME
,'U' AS DEPOSIT_FLG
,'U' AS POSITION_FLG
,'U' LIQUID_FLG
,'Unknown' AS LOCATION_NAME
,b.S_Ref1 AS PORTFOLIO_NAME
,'Unknown' AS ACCOUNT_TYPE_NAME
,b.Unique_ID AS ACCOUNT_NUMBER
,CAST( right(CAST(S_StartDate AS varchar(8)),4) + SUBSTRING(CAST(S_StartDate AS varchar(8)),4,2) + LEFT(CAST(S_StartDate AS varchar(8)), 2)AS int) 
AS ACCOUNT_OPENING_DATE

,'USD' AS INSTRUMENT_ISO_CURRENCY
,'USD' AS ISO_CURRENCY_CODE
,CASE
    WHEN rl.CURRENT_VALUE_FLG='Y' THEN 
    CAST(CAST(CASE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') WHEN '-' THEN '0' ELSE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') END AS float) AS numeric(22,6)) * fx.EXCHANGE_RATE
    ELSE 0
 END AS CURRENT_VALUE
,ISNULL(CAST( right(S_MaturityDate,4) + SUBSTRING(S_MaturityDate,4,2) + LEFT(S_MaturityDate, 2)AS int), 29991231) AS MATURITY_DATE
,CASE
    WHEN rl.MATURITY_VALUE_FLG='Y' THEN
    CAST(CAST(CASE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') WHEN '-' THEN '0' ELSE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') END AS float) AS numeric(22,6)) * fx.EXCHANGE_RATE
    ELSE 0
 END AS MATURITY_VALUE
,0 AS DRAWN_AMOUNT
,CASE
    WHEN rl.UNDRAWN_AMOUNT_FLG='Y' THEN 
    CAST(CAST(CASE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') WHEN '-' THEN '0' ELSE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') END AS float) AS numeric(22,6)) * fx.EXCHANGE_RATE
    ELSE 0
 END AS UNDRAWN_AMOUNT
,CASE
    WHEN rl.LIMIT_AMOUNT_FLG='Y' THEN 
    CAST(CAST(CASE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') WHEN '-' THEN '0' ELSE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') END AS float) AS numeric(22,6)) * fx.EXCHANGE_RATE
    ELSE 0
 END AS LIMIT_AMOUNT
,ISNULL(rl.EXPOSURE_CD, 'Unknown') AS EXPOSURE_CD
,CASE
    WHEN rl.EXPECTED_CASH_FLOW_FLG='Y' THEN 
    CAST(CAST(CASE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') WHEN '-' THEN '0' ELSE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') END AS float) AS numeric(22,6)) * fx.EXCHANGE_RATE
    ELSE 0
 END AS EXPECTED_CASH_FLOW
,CASE
    WHEN rl.EXPECTED_CASH_FLOW_FLG='Y' THEN ISNULL(CAST( right(S_MaturityDate,4) + SUBSTRING(S_MaturityDate,4,2) + LEFT(S_MaturityDate, 2)AS int), 29991231) 
    ELSE 0
 END AS EXPECTED_CASH_FLOW_DATE
,'U' AS PASSED_DUE_IND
,'U' AS INT_TYPE
,0 AS INT_FIXED_RATE
,'Unknown' AS INT_VAR_BASENAME
,0 AS INT_REL_VAR_RATE
,'Unknown' AS RATING_NAME
,'Unknown' AS RATING_AGENCY
,'B2L' AS BASEL_OPTION
,'LT' AS RATING_TYPE
,ISNULL(CAST(SUBSTRING(b.STBITEM, 5, 2) AS int), 0) AS REPORT_LINE_NUMBER
,ISNULL(rl.REPORT_LINE_NAME, 'Unknown') AS REPORT_LINE_NAME
,0 AS DELTA
,0 AS GAMMA
,'Unknown' AS NETTING_NUMBER
,'Unknown' AS COLLATERAL_ACCOUNT_NUMBER
,'U' AS BUFFER_ELIGIBLE
,0 AS ALTERNATIVE_YIELD_RATE
,'Unknown' AS FTP_PORTFOLIO
,'U' AS REPO_FLAG
,0 AS LIMIT_EXPIRY_DATE
,ISNULL(rl.AL_DEFINITION, 'U') AS AL_DEFINITION
,0 AS REPO_AMOUNT
,'Unknown'AS TRANSACTION_NUMBER
,0 AS UNENCUMBERED_AMOUNT
,'Unknown' AS MARGIN_ACCOUNT_NUMBER
,CASE
    WHEN rl.REPORT_LINE_NUMBER BETWEEN 6 AND 17 THEN 7
    WHEN rl.REPORT_LINE_NUMBER=23 THEN 6
    ELSE 1
 END AS CASH_FLOW_TYPE
,0 as value_of_house
,0 as security_value
,'Unknown' as security_type
,0 AS INT_RATE_FLOOR
,0 AS INT_RATE_CEILING
,'Unk' as LCR_LINE_NUMBER
,'Unk' as AMM_LINE_NUMBER
,'Unknown' as basel_approach
,'Unknown' as CCR_portfolio
,'Unknown' as CCR_sector
,'Unknown' as CCR_region
FROM AllocationJunLLv2 b

INNER JOIN LIQ_EXCH_RATE_SIF fx ON 'USD'=fx.SOURCE_CURRENCY_CD
INNER JOIN DM_REPORT_LINE rl 
ON CAST(SUBSTRING(b.STBITEM, 5, 2) AS int)=rl.REPORT_LINE_NUMBER AND rl.REPORT_NUMBER=48
 WHERE ISNULL(CAST(CAST(
  CASE dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') WHEN '-' THEN '0' ELSE   dbo.udf_ExtractChars(S_FormValue, '^0-9.E-') END
  AS float)
  AS numeric(22,6))
, 0) <> 0
AND NOT (
LEFT(b.STBITEM, 3) = 'F48' AND 
RIGHT(b.STBITEM, 2) = 'C1' AND 
CAST(SUBSTRING(b.STBITEM, 5, 2) AS int) BETWEEN 6 AND 17
)


UPDATE LIQ_ACCT_EOD_SIF
SET 
    CURRENT_VALUE=-CURRENT_VALUE,
    MATURITY_VALUE=-MATURITY_VALUE
WHERE
    REPORT_DATE=@repdate

GO

我得到的错误是：

Msg 8116, Level 16, State 1, Line 9
Argument data type datetime is invalid for argument 1 of substring function.
Msg 8116, Level 16, State 1, Line 17
Argument data type datetime is invalid for argument 1 of substring function.

我已经试过了

CAST(S_ReportingDate as nvchar(8))

但这并没有解决问题，有人有什么想法吗？

【问题讨论】：

我删除了 mysql 标签，因为语法看起来像 SQL Server。
您收到此错误是因为您尝试以日期格式运行字符串运算符。如果您没有 .NET 扩展名，则应使用 FORMAT(S_ReportingDate,'YYYYMMDD') 或 CONVERT(S_ReportingDate,112) 之类的名称：msdn.microsoft.com/en-us/library/ms187928.aspx
@AHocevar 你指的是什么扩展？它是 SSMS 还是 VS 的一部分？
是CLR的一部分，我还没用过。根据文档，您需要 SQL Server 2014 或更高版本msdn.microsoft.com/en-us/library/hh213505.aspx
@AHocevar 我有点困惑，因为您提到了一个扩展（添加了一些东西），并且您不断链接包含 SQL Server 功能的 MSDN 页面。我以为你的意思是你为 SSMS 或 VS 下载的东西。

标签： sql sql-server

【解决方案1】：

SUBSTRING() 函数接受字符数据类型，如 char、varchar、nchar、nvarchar、text 等。

如果我们传递一个 DATETIME 数据类型，它不知道该怎么做。

它的值的格式类似于 2015-01-13 00:00:00.000，但它们不是。这只是使日期时间值可读的连接的标准格式。您可以使用具有合适格式编号的 CONVERT 函数将日期时间转换为字符串。如果您只需要日期时间的日期部分，那么我的首选格式是 112，将其格式化为 YYYYMMDD。

换句话说，只需将 "CONVERT(char(8), date, 112)" 传递给您的子字符串函数。

如果您还需要时间部分，请查看在线图书以获取更合适的格式。

【讨论】：

【解决方案2】：

您似乎正在尝试使用字符串操作从日期时间字段中提取年、月和日期。您可以将日期时间字段简单地转换为适当的格式：

CONVERT (varchar(15), GETDATE(), 112)

如果您需要它作为 INT，那么只需将其包装在另一个 CONVERT(int) 函数中。

【讨论】：

我已经尝试了您的建议并将其更改为 CAST(CONVERT (varchar(15), S_ReportingDate, 112) AS INT) 但是我仍然收到此错误：Msg 8116, Level 16, State 1, Line 42 Argument data type datetime is invalid for argument 1 of substring function. 第 42 行对应于：INSERT INTO dbo.LIQ_ACCT_EOD_SIF
看起来你也在INSERT 中做同样的事情。遍历每一行并将您的SUBSTRINGs 替换为新的CONVERT 逻辑。