SQL:动态SQL问题
我不知道这为什么不起作用。如果成功保存,我将其设置为返回结果1,但我一直得到0。这是可行的,但我最近增加了查询的难度。现在它不起作用了: SQL查询:SQL:动态SQL问题,sql,.net,Sql,.net,我不知道这为什么不起作用。如果成功保存,我将其设置为返回结果1,但我一直得到0。这是可行的,但我最近增加了查询的难度。现在它不起作用了: SQL查询: DECLARE @Email AS NVARCHAR(500) = 'uokgames@gmail.com', @Update AS NVARCHAR(MAX) = 'SET Tile_332 = 1,Tile_216 = 1,Tile_296 = 1,Tile_303 = 1,Tile_313 = 1,Tile_274 = 1,
DECLARE
@Email AS NVARCHAR(500) = 'uokgames@gmail.com',
@Update AS NVARCHAR(MAX) = 'SET Tile_332 = 1,Tile_216 = 1,Tile_296 = 1,Tile_303 = 1,Tile_313 = 1,Tile_274 = 1,Tile_261 = 1,Tile_311 = 1,Tile_320 = 1,Tile_204 = 1,Tile_304 = 1,Tile_187 = 1,Tile_291 = 1',
@Board AS NVARCHAR(100) = 'Templo_Mayor',
@Difficulty AS INT = 0
--AS
BEGIN
DECLARE @sql AS NVARCHAR(MAX),
@Response AS BIT = 0
BEGIN TRY
SET @sql = 'UPDATE [dbo].[Game_Board] ' + @Update + ' WHERE [Email] =''' + @Email + ''' AND [Board_Name] = ''' + @Board + ''' AND [Difficulty] = ' + @Difficulty
EXECUTE sp_executesql @sql
SET @Response = 1;
END TRY
BEGIN CATCH
SET @Response = 0;
END CATCH
SELECT @Response
END
使用参数
BEGIN TRY
SET @sql = 'UPDATE [dbo].[Game_Board] ' + @Update + ' WHERE [Email] = @Email AND [Board_Name] = @Board AND [Difficulty] = @Difficulty';
EXECUTE sp_executesql @sql,
N'@Email NVARCHAR(500), @Board NVARCHAR(100), @Difficulty INT,
@Email=@Email, @Board=@Board, @Difficulty=@Difficulty
SET @Response = 1;
END TRY
BEGIN CATCH
SET @Response = 0;
END CATCH
在这里,您只需要将难度转换为varchar(1),它就会起作用
DECLARE
@Email AS NVARCHAR(500) = 'uokgames@gmail.com',
@Update AS NVARCHAR(MAX) = 'SET Tile_332 = 1,Tile_216 = 1,Tile_296 = 1,Tile_303 = 1,Tile_313 = 1,Tile_274 = 1,Tile_261 = 1,Tile_311 = 1,Tile_320 = 1,Tile_204 = 1,Tile_304 = 1,Tile_187 = 1,Tile_291 = 1',
@Board AS NVARCHAR(100) = 'Templo_Mayor',
@Difficulty AS varchar(1) = '0'
--AS
BEGIN
DECLARE @sql AS NVARCHAR(MAX),
@Response AS BIT = 0
BEGIN TRY
SET @sql = 'UPDATE [dbo].[Game_Board] ' + @Update + ' WHERE [Email] =''' + @Email + ''' AND [Board_Name] = ''' + @Board + ''' AND [Difficulty] = ' + @Difficulty
EXECUTE sp_executesql @sql
SET @Response = 1;
END TRY
BEGIN CATCH
SET @Response = 0;
END CATCH
SELECT @Response
END
您需要删除try-catch,以便获得真正的错误:
Msg 245, Level 16, State 1, Line 12
Conversion failed when converting the nvarchar value 'UPDATE [dbo].[Game_Board] SET Tile_332 = 1,Tile_216 = 1,Tile_296 = 1,Tile_303 = 1,Tile_313 = 1,Tile_274 = 1,Tile_261 = 1,Tile_311 = 1,Tile_320 = 1,Tile_204 = 1,Tile_304 = 1,Tile_187 = 1,Tile_291 = 1 WHERE [Email] ='uokgames@gmail.com' AND [Board_Name] = 'Templo_Mayor' AND [Difficulty] = ' to data type int.