Dynamic reports sql procedure.
Sau đây là thủ tục sql động để tìm kiếm nhiều điều kiện cùng lúc. CREATE PROCEDURE [dbo].[spTest] @nhan_hieu VARCHAR(30) = null, @kieu VARCHAR(30) = null, @tu_ngay VARCHAR (19) = null, @den_ngay VARCHAR (19) = null AS BEGIN DECLARE @SQL varchar(1000) SET @SQL = 'SELECT nhan_hieuName, kieu, CAST(kieu_dang AS decimal(10,1)) AS [kieu_dang], loai, nhan_hieu, DATENAME(Month, DATEADD(Month, DATEPART(Month, Date), 0) - 1) AS [thang], SUM(gia) AS [Tong ban ra], COUNT(*) AS [Tong ] FROM [products] ' IF (@nhan_hieu IS NOT NULL AND @nhan_hieu != '') OR (@kieu IS NOT NULL AND @kieu != '') OR (@tu_ngay IS NOT NULL) OR (@den_ngay IS NOT NULL) SET @SQL = @SQL + 'WHERE ' IF @nhan_hieu IS NOT NULL AND @nhan_hieu != '' SET @SQL = @SQL + 'nhan_hieuName = ' + '''' + @nhan_hieu + '''' IF @kieu IS NOT NULL AND @kieu != '' SET @SQL = @SQL + 'and kieu = ' + '''' + ...