Sql server SQL Server存储过程需要声明标量变量
我正在尝试以下存储过程:Sql server SQL Server存储过程需要声明标量变量,sql-server,stored-procedures,Sql Server,Stored Procedures,我正在尝试以下存储过程: SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[spx_Pager] @PageNo int = 1, @ItemsPerPage int = 2, @TotalRows int out AS BEGIN SET NOCOUNT ON DECLARE @StartIdx int, @SQL nvarchar(max),
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[spx_Pager]
@PageNo int = 1,
@ItemsPerPage int = 2,
@TotalRows int out
AS
BEGIN
SET NOCOUNT ON
DECLARE
@StartIdx int,
@SQL nvarchar(max),
@SQL_Conditions nvarchar(max),
@EndIdx int
IF @PageNo < 1 SET @PageNo = 1
IF @ItemsPerPage < 1 SET @ItemsPerPage = 10
SET @StartIdx = (@PageNo -1) * @ItemsPerPage + 1
SET @EndIdx = (@StartIdx + @ItemsPerPage) - 1
SET @SQL = 'SELECT FilePath
FROM (
SELECT ROW_NUMBER() OVER(ORDER BY ID) AS Row, *
FROM tblFiles ) AS tbl WHERE Row >= '
+ CONVERT(varchar(9), @StartIdx) + ' AND
Row <= ' + CONVERT(varchar(9), @EndIdx)
EXEC sp_executesql @SQL
SET @SQL = 'SELECT @TotalRows=COUNT(*) FROM tblFiles'
EXEC sp_executesql
@query = @SQL,
@params = N'@TotalRows INT OUTPUT',
@TotalRows = @TotalRows OUTPUT
END
它工作得很好,但是我尝试用一个视图来扩展它。下面是代码
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
alter PROCEDURE [dbo].[spx_Pager]
@PageNo int = 1,
@ItemsPerPage int = 2,
@TotalRows int out,
@fname varchar(50),
@mname varchar(50),
@lname varchar(50),
@qfr varchar(10)
AS
BEGIN
SET NOCOUNT ON
DECLARE
@StartIdx int,
@SQL nvarchar(max),
@SQL_Conditions nvarchar(max),
@EndIdx int
IF @PageNo < 1 SET @PageNo = 1
IF @ItemsPerPage < 1 SET @ItemsPerPage = 10
SET @StartIdx = (@PageNo -1) * @ItemsPerPage + 1
SET @EndIdx = (@StartIdx + @ItemsPerPage) - 1
SET @SQL = N'SELECT path_front
FROM (
SELECT ROW_NUMBER() OVER(ORDER BY fname) AS Row, *
FROM searcherview
where (fname = @fname or @fname = '') and (mname = @mname or @mname = '') and (lname = @lname or @lname = '') and (qualifier = @qfr or @qfr = '')
) AS tbl WHERE Row >= '
+ CONVERT(varchar(9), @StartIdx) + ' AND
Row <= ' + CONVERT(varchar(9), @EndIdx)
EXEC sp_executesql @SQL
SET @SQL = 'SELECT @TotalRows=COUNT(*) FROM searcherview'
EXEC sp_executesql
@query = @SQL,
@params = N'@TotalRows INT OUTPUT',
@TotalRows = @TotalRows OUTPUT
END
但是当我尝试执行存储过程时,返回一个错误,它说
必须声明标量变量@fname
如果在sp_executesql中使用变量,则需要像在第二个sp_executesql中一样定义它们 所以你需要加上
@params = N'@fname varchar(50), @mname varchar(50), @lname varchar(50), @qualifier varchar(10)',
@fname = @fname, @mname = @mname, @lname=@lname, @qualifier = @qfr
到您的第一个sp_executesql调用
虽然我并不清楚为什么要使用动态SQL
如果您使用的是SQL 2012,您可能会对OFFSET和FETCH命令感兴趣
由于@podiluska我使用的是2008 r2,我尝试了你的建议,但它说Msg 102,级别15,状态1,过程spx_Pager,第34行“@params”附近的语法不正确。@angelogogo你可能漏掉了SQL后面的逗号
@params = N'@fname varchar(50), @mname varchar(50), @lname varchar(50), @qualifier varchar(10)',
@fname = @fname, @mname = @mname, @lname=@lname, @qualifier = @qfr
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
alter PROCEDURE [dbo].[spx_Pager](
@PageNo int = 1,
@ItemsPerPage int = 2,
@TotalRows int out,
@fname varchar(50),
@mname varchar(50),
@lname varchar(50),
@qfr varchar(10)
)
AS
BEGIN
SET NOCOUNT ON
DECLARE
@StartIdx int,
@SQL nvarchar(max),
@SQL_Conditions nvarchar(max),
@EndIdx int
IF @PageNo < 1 SET @PageNo = 1
IF @ItemsPerPage < 1 SET @ItemsPerPage = 10
SET @StartIdx = (@PageNo -1) * @ItemsPerPage + 1
SET @EndIdx = (@StartIdx + @ItemsPerPage) - 1
SET @SQL = N'SELECT path_front
FROM (
SELECT ROW_NUMBER() OVER(ORDER BY fname) AS Row, *
FROM searcherview
where (fname = @firstname or @firstname = '') and (mname = @midname or @midname = '') and (lname = @lastname or @lastname = '') and (qualifier = @quali or @quali = '')
) AS tbl WHERE Row >= '
+ CONVERT(varchar(9), @StartIdx) + ' AND
Row <= ' + CONVERT(varchar(9), @EndIdx)
EXEC sp_executesql @SQL,
@params = N'@firstname varchar(50), @midname varchar(50), @lastname varchar(50), @quali varchar(10)',
@firstname = @fname, @midname = @mname, @lastname=@lname, @quali = @qfr
SET @SQL = 'SELECT @TotalRows=COUNT(*) FROM searcherview'
EXEC sp_executesql
@query = @SQL,
@params = N'@TotalRows INT OUTPUT',
@TotalRows = @TotalRows OUTPUT
END