错误消息：Concat函数需要2个参数
我有以下代码，当作为Query运行时可以正常工作但在作为视图运行时返回错误消息。我附上了错误消息。我想我错过了一个支架。如果有人能提供帮助，我们非常感激。
SELECT CASE
WHEN a.Sex = 1
THEN 'M'
WHEN a.Sex = 2
THEN 'F'
END AS Derived_Sex,
CASE
WHEN concat(b.Complete, a.[CALCULATED_AGE]) LIKE 'A%'
THEN 'Less than 1'
WHEN concat(b.Complete, a.[CALCULATED_AGE]) LIKE 'B%'
THEN 'Less than 1'
WHEN concat(b.Complete, a.[CALCULATED_AGE]) LIKE 'C%'
THEN 'Less than 1'
ELSE '1 year and above'
END AS Derived_InfantCat,
YEAR(a.DATE_OF_DEATH) AS [Derived_Year of Death],
FORMAT(a.DATE_OF_DEATH, 'MM') AS [Derived_Month of Death],
YEAR(a.DATE_OF_REGISTRATION) AS [Derived_Year of Registration],
FORMAT(a.DATE_OF_REGISTRATION, 'MM') AS [Derived_Month of Registration],
CONCAT(LEFT(CONVERT(nvarchar, a.DATE_OF_DEATH, 21), 4),
SUBSTRING(CONVERT(nvarchar, a.DATE_OF_DEATH, 21), 6, 2)) AS [Derived_YearMonth of Death],
CONCAT(LEFT(CONVERT(nvarchar, a.DATE_OF_REGISTRATION, 21), 4),
SUBSTRING(CONVERT(nvarchar, a.DATE_OF_REGISTRATION, 21), 6, 2)) AS [Derived_YearMonth of Registration],
CASE
WHEN LEN(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END) = 3
THEN CONCAT(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END, 'X')
ELSE
(CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END)
END AS [Derived_Cause of Death Code],
c.[4 character DESCRIPTION],
c.[3 character Sub-Chapter Description],
d.[District_Name] AS [LA NAME],
e.[WD14NM] AS [WARD NAME],
(
CASE
WHEN a.[NHS_ESTABLISHMENT_IND] = '1'
THEN 'NHS'
WHEN a.[NHS_ESTABLISHMENT_IND] = '2'
THEN 'NON-NHS'
ELSE 'OTHER'
END) AS [NHS ESTABLISHMENT TYPE DESCRIPTION],
(
CASE
WHEN a.[NHS_ESTABLISHMENT_IND] = '1'
THEN 'NHS'
WHEN a.[NHS_ESTABLISHMENT_IND] = '2'
THEN 'NON-NHS'
ELSE 'OTHER'
END) AS [NHS ESTABLISHMENT TYPE DESCRIPTION],
(
CASE
WHEN a.[NHS_ESTABLISHMENT_IND] = '1'
THEN 'NHS'
WHEN a.[NHS_ESTABLISHMENT_IND] = '2'
THEN 'NON-NHS'
ELSE 'OTHER'
END) AS [NHS ESTABLISHMENT TYPE DESCRIPTION],
(
CASE
WHEN a.PLACE_OF_DEATH_CODE = 'H'
THEN 'HOME'
WHEN a.PLACE_OF_DEATH_CODE = 'E'
THEN 'ELSEWHERE'
ELSE 'OTHER'
END
) AS [PLACE OF DEATH CODE],
concat(a.[NHS_ESTABLISHMENT_IND],'-',a.PLACE_OF_DEATH_CODE) as code
FROM RAW.dbo.ONS_Death_DOD201516FYQ1 AS a
LEFT OUTER JOIN REFERENCE.dbo.[ONS-PCMD_AGE] AS b
ON a.CALCULATED_AGE_UNIT = b.[Age Unit]
LEFT OUTER JOIN REFERENCE.dbo.[OTH_ICD-10] AS c
ON
CASE
WHEN LEN(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END) = 3
THEN CONCAT
(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END, 'X')
ELSE (
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END)
END = c.[4 CharacterDiagnosis Code]
LEFT OUTER JOIN REFERENCE.dbo.GEOG_LANames_1991 AS d
ON a.[ULA_OF_RESIDENCE_CODE] = d.[ONS_District_Code]
LEFT OUTER JOIN REFERENCE.dbo.GEOG_WardNames_2014 AS e
ON CONCAT(a.[ULA_OF_RESIDENCE_CODE],a.[WARD_OF_RESIDENCE_CODE]) =e.WD14CDO
2 个答案:
答案 0 :(得分：1)
连接字段中可能存在空值。我已将ISNULL函数应用于外连接表中的列。 只需尝试使用以下格式化的代码。
SELECT CASE
WHEN a.Sex = 1
THEN 'M'
WHEN a.Sex = 2
THEN 'F'
END AS Derived_Sex,
CASE
WHEN LTRIM(RTRIM(CONCAT(ISNULL(b.Complete,''), a.[CALCULATED_AGE]))) LIKE 'A%'
THEN 'Less than 1'
WHEN LTRIM(RTRIM(concat(ISNULL(b.Complete,''), a.[CALCULATED_AGE]))) LIKE 'B%'
THEN 'Less than 1'
WHEN LTRIM(RTRIM(concat(ISNULL(b.Complete,''), a.[CALCULATED_AGE]))) LIKE 'C%'
THEN 'Less than 1'
ELSE '1 year and above'
END AS Derived_InfantCat,
YEAR(a.DATE_OF_DEATH) AS [Derived_Year of Death],
FORMAT(a.DATE_OF_DEATH, 'MM') AS [Derived_Month of Death],
YEAR(a.DATE_OF_REGISTRATION) AS [Derived_Year of Registration],
FORMAT(a.DATE_OF_REGISTRATION, 'MM') AS [Derived_Month of Registration],
CONCAT(LEFT(CONVERT(nvarchar, a.DATE_OF_DEATH, 21), 4),
SUBSTRING(CONVERT(nvarchar, a.DATE_OF_DEATH, 21), 6, 2)) AS [Derived_YearMonth of Death],
CONCAT(LEFT(CONVERT(nvarchar, a.DATE_OF_REGISTRATION, 21), 4),
SUBSTRING(CONVERT(nvarchar, a.DATE_OF_REGISTRATION, 21), 6, 2)) AS [Derived_YearMonth of Registration],
CASE
WHEN LEN(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END) = 3
THEN CONCAT(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END, 'X')
ELSE
(CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END)
END AS [Derived_Cause of Death Code],
c.[4 character DESCRIPTION],
c.[3 character Sub-Chapter Description],
d.[District_Name] AS [LA NAME],
e.[WD14NM] AS [WARD NAME],
(
CASE
WHEN a.[NHS_ESTABLISHMENT_IND] = '1'
THEN 'NHS'
WHEN a.[NHS_ESTABLISHMENT_IND] = '2'
THEN 'NON-NHS'
ELSE 'OTHER'
END) AS [NHS ESTABLISHMENT TYPE DESCRIPTION],
(
CASE
WHEN a.[NHS_ESTABLISHMENT_IND] = '1'
THEN 'NHS'
WHEN a.[NHS_ESTABLISHMENT_IND] = '2'
THEN 'NON-NHS'
ELSE 'OTHER'
END) AS [NHS ESTABLISHMENT TYPE DESCRIPTION],
(
CASE
WHEN a.[NHS_ESTABLISHMENT_IND] = '1'
THEN 'NHS'
WHEN a.[NHS_ESTABLISHMENT_IND] = '2'
THEN 'NON-NHS'
ELSE 'OTHER'
END) AS [NHS ESTABLISHMENT TYPE DESCRIPTION],
(
CASE
WHEN a.PLACE_OF_DEATH_CODE = 'H'
THEN 'HOME'
WHEN a.PLACE_OF_DEATH_CODE = 'E'
THEN 'ELSEWHERE'
ELSE 'OTHER'
END
) AS [PLACE OF DEATH CODE],
concat(a.[NHS_ESTABLISHMENT_IND],'-',a.PLACE_OF_DEATH_CODE) as code
FROM RAW.dbo.ONS_Death_DOD201516FYQ1 AS a
LEFT OUTER JOIN REFERENCE.dbo.[ONS-PCMD_AGE] AS b
ON a.CALCULATED_AGE_UNIT = b.[Age Unit]
LEFT OUTER JOIN REFERENCE.dbo.[OTH_ICD-10] AS c
ON
CASE
WHEN LEN(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END) = 3
THEN CONCAT
(
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END, 'X')
ELSE (
CASE
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) = ''
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
WHEN (a.UNDERLYING_CAUSE_OF_DEATH) IS NULL
THEN a.[CAUSE_OF_DEATH_ICD_CODE_1]
ELSE a.UNDERLYING_CAUSE_OF_DEATH
END)
END = c.[4 CharacterDiagnosis Code]
LEFT OUTER JOIN REFERENCE.dbo.GEOG_LANames_1991 AS d
ON a.[ULA_OF_RESIDENCE_CODE] = d.[ONS_District_Code]
LEFT OUTER JOIN REFERENCE.dbo.GEOG_WardNames_2014 AS e
ON CONCAT(ISNULL(a.[ULA_OF_RESIDENCE_CODE],''),ISNULL(a.[WARD_OF_RESIDENCE_CODE],'')) =e.WD14CDO
答案 1 :(得分：0)
“CONCAT”功能必须至少有两个参数。
但是，在声明的许多地方，您不会将两个参数/列传递给CONCATENATE 。
如果您想显示Firstname和LastName中的CONCAT(Firstname, Lastname)
，您必须写信：
app.UseJwtBearerAuthentication(new JwtBearerAuthenticationOptions()
{
//...
});
app.UseIdentity();
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