尝试调用 T-sql 中的存储过程时“=”附近的语法不正确

Question

我正在调用名为 Searchprocedure 的存储过程。我在调用它的那一行出错了。我没有对过程中传递的参数进行任何更改，它在之前使用相同的调用语句被调用得很好。

Exec SearchProcedure @firstname = 'Simran', @middlename = 'kaur', @lastname = 'Khurana', @City = 'Delhi'

给出错误的语法有什么问题：

Incorrect syntax near '='

编辑：我所做的声明：

 set @sql = 'declare ' + '@Temp'+ @colVar + ' int'
    exec(@sql)
    select @sql as 'SQLFORDECLARATIONS 
outputs 


declare @TempMiddleName int

然而，当我尝试在变量中设置值时出现错误，应该首先声明它。

set 语句导致：

select  @TempMiddleName=dbo.[MatchMiddleName](MiddleNameFromUser,MiddleNameFromTable,0)

这是应该的，但它看不到声明的变量

存储过程如下：

create procedure SearchProcedure
(
   @firstname nvarchar(20),
   @middlename nvarchar(20) = null,
   @lastname nvarchar(20),
   @DOB Date = null,
   @SSN nvarchar(30)= null, 
   @ZIP nvarchar(10)= null,
   @StateOfResidence nvarchar(2)= null,
   @City nvarchar(20)= null,
   @StreetName nvarchar(20)= null,
   @StreetType nvarchar(20)= null,
   @BuildingNumber int= null,
   @Aptnumber nvarchar(10)= null
)
As 
DECLARE @sSQL NVARCHAR(2000), @Where NVARCHAR(1000) = ' '
declare @Percent int,
@FN nvarchar(20),
@MN nvarchar(20) = null,
@LN nvarchar(20),
@DateOfB Date = null,
@SSNumber nvarchar(30)= null, 
@ZIPCode nvarchar(10)= null,
@StateOfRes nvarchar(2)= null,
@CityOfRes nvarchar(20)= null,
@StreetNameRes nvarchar(20)= null,
@StreetTypeRes nvarchar(20)= null,
@BuildingNumberRes int= null,
@AptnumberRes nvarchar(10)= null
set @Percent = 0
create table #results
(
firstname nvarchar(20) not null,
middlename nvarchar(20),
lastname nvarchar(20)not null,
PercentageMatch int not null,
DOB Date,
SSN nvarchar(30), 
ZIP nvarchar(10),
[State] nvarchar(2),
City nvarchar(20),
StreetName nvarchar(20),
StreetType nvarchar(20),
BuildingNumber int,
Aptnumber nvarchar(10)
 )

declare  c Cursor local static Read_only 
 for 
SELECT * from dbo.Patients where firstname = @firstname


open c

fetch next from c into @FN,
@MN,
@LN,
@DateOfB,
@SSNumber, 
@ZIPCode,
@StateOfRes,
@CityOfRes,
@StreetNameRes,
@StreetTypeRes,
@BuildingNumberRes,
@AptnumberRes

while @@FETCH_STATUS = 0 BEGIN

/*set @Percent = dbo.[MatchLastName](@lastname, @LN, @Percent)
set @Percent = dbo.[MatchMiddleName](@middlename, @MN, @Percent)
set @Percent = dbo.[MatchCity](@City, @CityOfRes, @Percent)*/
Exec [dbo].[OutputProcedure]  @lastname,  @LN, @middlename, @MN,@City, @CityOfRes, @Percent output
Insert into #results values 
(@FN,@MN,@LN,@Percent, @DateOfB,@SSNumber, @ZIPCode,@StateOfRes,@CityOfRes,@StreetNameRes,@StreetTypeRes,@BuildingNumberRes,@AptnumberRes)
fetch next from c into @FN,
@MN,
@LN,
@DateOfB,
@SSNumber, 
@ZIPCode,
@StateOfRes,
@CityOfRes,
@StreetNameRes,
@StreetTypeRes,
@BuildingNumberRes,
@AptnumberRes
end

select * from #results order by PercentageMatch desc
IF OBJECT_ID('tempdb..#results') IS NOT NULL DROP TABLE #results
go

OutputProcedure代码如下：

CREATE Procedure OutputProcedure
( 
 @LastNameFromUser nvarchar(20) = null, 
 @LastNameFromTable nvarchar(20), 
 @MiddleNameFromUser nvarchar(20) = null, 
 @MiddleNameFromTable nvarchar(20) = null, 
 @CityFromUser nvarchar(20) = null,
  @CityFromTable nvarchar(20) = null,
@Percentage int out
  )
AS
BEGIN
select 'OUTPUTPROCEDURECALLED'
declare @maxvalue int
DECLARE @variableTable TABLE (
    idx int identity(1,1),
    matchvalue nvarchar(15))

    INSERT INTO @variableTable(matchvalue) values ('MiddleName')
    INSERT INTO @variableTable(matchvalue) values ('LastName')
    INSERT INTO @variableTable(matchvalue) values ('City')

    SELECT * FROM @variableTable 
DECLARE @counter int
declare @sql nvarchar(100)
declare @sql2 nvarchar(25), @finalResult nvarchar(100)
declare @sql3 nvarchar(300), @sql4 nvarchar(15),  @tempresultStore nvarchar(20), @temp int, @temp2 int, @average int


SET @counter = 1
SELECT @maxvalue = (SELECT MAX(idx) FROM @variableTable)

select @maxvalue as 'MAXVALUE'
WHILE(@counter <= @maxvalue)
BEGIN
    DECLARE @colVar nvarchar(15)

    SELECT @colVar = matchvalue FROM @variableTable WHERE idx = @counter
    set @sql = 'declare ' + '@Temp'+ @colVar + ' int'
    exec(@sql)
    select @sql as 'SQLFORDECLARATIONS'

    /*set @temp = CHARINDEX(' ',@sql)
    select @temp as 'resultofcharindex'
    set @temp2 = LEN(@sql) - (@temp)
    SELECT @temp2 AS 'AFTERADDING1'
    set @tempresultStore = right(@sql, @temp2)*/
    set @tempresultStore = 'Temp'+@colVar
    SELECT @tempresultStore AS 'FINALCUTPART'

set @sql3 = 'set ' + ' ' + @tempresultStore + '=' + 'dbo.[Match' + @colVar + '](' + @colVar + 'FromUser' + ',' + @colVar + 'FromTable' + ',' + '0)' 
EXEC(@sql3)  
select @sql3 as 'check sql query formed'

set @finalResult = @finalResult + @tempresultStore
select @finalResult as 'SUM'
    SET @counter = @counter + 1
    select @counter as 'COUNTERVALUE'
    END
    set @Percentage = @finalResult/@maxvalue
    SELECT @Percentage AS 'FINALRESULT'
RETURN 
END

Answer 1

我找不到任何错误，并且可以运行 exec 而不会出现错误消息。

编辑：在我创建（现在是 avialbe）输出过程并取消注释其调用后，我也遇到了错误...

仍在调查中

编辑2：在输出过程中，您必须使用 set @sql = 'declare ' + '@Temp'+ @colVar + ' int'（@在 Temp 之前）和 set @sql3 = 'set ' + ' @' + @tempresultStore"（在'set'后加@。

顺便说一句：您可以在 Dynamic SQL 中执行多个语句，因此您可以使用 f.e。 exec (@sql + '; ' + @sql3);

Answer 2

我觉得你的问题太多了Dynamic sql。我找到一个

SET @sql3 = 'set ' + ' ' + @tempresultStore + ' = ' + 'dbo.[Match'
                        + @colVar + '](' + @colVar + 'FromUser' + ',' + @colVar
                        + 'FromTable' + ',' + '0)'

在上面的代码中使用 Select 而不是 Set。看起来您是从 UDF 中选择的。试试这个

SET @sql3 = 'Select ' + ' ' + @tempresultStore + ' = ' + 'dbo.[Match'
                        + @colVar + '](' + @colVar + 'FromUser' + ',' + @colVar
                        + 'FromTable' + ',' + '0)'

注意： 要在 Exec @sql 之前调试 Dynamic Sql 只需使用 print @sql 检查生成的 syntax 和其他内容sql

Answer 3

--Setting variable in Dynamic SQL
DECLARE 
    @sql NVARCHAR(MAX),
    @Name NVARCHAR(100)

SET @Name = '#B2E0EB1A'
SET @sql = 
'
DECLARE @MyVar NVARCHAR(100)
SELECT TOP 1 @MyVar = name FROM sys.objects WHERE name LIKE ''%a''--Escaping single quote with double quote
PRINT @MyVar
'
EXEC(@sql)

SET @sql = 
'
DECLARE @MyVar NVARCHAR(100)
SET @MyVar = '''+(SELECT TOP 1 name FROM sys.objects WHERE name LIKE '%a')+'''--Escaping single quote with double quote
PRINT @MyVar
'
EXEC(@sql)

SET @sql = 
'
DECLARE @MyVar NVARCHAR(100)
SET @MyVar = '''+@Name+'''--Escaping single quote with double quote
PRINT @MyVar
'
EXEC(@sql)


SET @sql = 
'
DECLARE @MyVar NVARCHAR(100)
SET @MyVar = ''#B2E0EB1A''--Escaping single quote with double quote
PRINT @MyVar
'
EXEC(@sql)

如果您想从动态查询中获取输出变量，您必须使用 sp_executesql 过程而不是 EXEC()

学习这段代码

DECLARE @DynamicSQLOutput NVARCHAR(100)   
DECLARE @SQL nvarchar(500);
DECLARE @ParmeterDefinition nvarchar(500);

--in this variabe you write the variables which you want to be declared in the dynamic sql without using the declare
SET @ParmeterDefinition = N'@FinalOutputResultInDynamicSQL NVARCHAR(100) OUTPUT';

--here you write your dynamic code
SELECT @SQL = N'SET @FinalOutputResultInDynamicSQL = ''test'' '


EXEC sp_executesql 
    @SQL, --Execute code
    @ParmeterDefinition, -- Define Parameters
    @FinalOutputResultInDynamicSQL = @DynamicSQLOutput OUTPUT --Get output
--Note that @FinalOutputResultInDynamicSQL is only defined in @ParmeterDefinition but not outside of the dynamic sql
PRINT @DynamicSQLOutput;

尝试调用 T-sql 中的存储过程时“=”附近的语法不正确

Incorrect syntax near '=' while trying to call a stored procedure in T-sql

sql

tsql

sql-server

ssms