SQL Stored Procedure Select-Anweisung

Question

Ich habe ein anderes Feld in meiner Datenbanktabelle mit dem Namen FileName. Ich möchte, dass der Datensatz von FileName ausgewählt wird. Was soll ich dem Code hinzufügen?

ALTER PROCEDURE [dbo].[spx_Pager] 
@PageNo int = 1, 
@ItemsPerPage int = 2, 
@TotalRows int out, 
@f_name nvarchar(50) 

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 @f_name = (@f_name) 
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 

Answer 1

Sie haben mir nicht viel gegeben, um weiterzugehen. Aber ist das was du brauchst?

ALTER PROCEDURE [dbo].[spx_Pager] 
@PageNo int = 1, 
@ItemsPerPage int = 2, 
@TotalRows int out, 
@f_name nvarchar(50) 

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 @f_name = (@f_name) 
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) + ' AND 
       FileName = @file_name' 
EXEC sp_executesql @SQL 

SET @SQL = 'SELECT @TotalRows=COUNT(*) FROM tblFiles' 
EXEC sp_executesql 
    @query = @SQL, 
    @params = N'@TotalRows INT OUTPUT', 
    @TotalRows = @TotalRows OUTPUT, 
    @file_name = @f_name 
END