数据未插入 SQL 服务器表

Question

I am developing a project and I have a difficulty in the part of SQL Server, I created a procedure, and I need that when the value hum in the table Bi_medicao is greater than 10 he put that line in the other table Bi_alerta but the the problem is that when I run the code everything is fine, but when I see it it doesn't put anything in the table... Just don't add any rows to the Bi_alerta table.

SQL Server stored procedure:

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[Bi_alertainset] 
    @alerta_hum varchar(50),
    @alerta_temp varchar(50),
    @alerta_lpg varchar(50),
    @alerta_co varchar(50),
    @alerta_fumo varchar(50)
AS
BEGIN
    SELECT
        @alerta_hum = med_hum,
        @alerta_temp = med_temp,
        @alerta_lpg = med_lpg,
        @alerta_co = med_co,
        @alerta_fumo = med_fumo
    FROM 
        Bi_medicao

    IF (@alerta_hum > 10)
        INSERT INTO Bi_alerta (alerta_hum, alerta_temp, alerta_lpg, alerta_co, alerta_fumo)
        VALUES (@alerta_hum, @alerta_temp, @alerta_lpg, @alerta_co, @alerta_fumo)
END

Answer 1

It's difficult to reproduce without any sample data, table structure and so on. Anyways, I would suggest to modify the insert as follows:

INSERT INTO Bi_alerta (alerta_hum, alerta_temp, alerta_lpg, alerta_co, alerta_fumo)
SELECT med_hum, med_temp, med_lpg, med_co, med_fumo
  FROM Bi_medicao
  WHERE CAST(med_hum AS INT) > 10

Answer 2

I think the problem could be that @alerta_hum is Varchar and not INT. Either you change the declaration to INT or you CONVERT your @alerta_hum Also, I would recommend using BEGIN/END for IF as well.

IF (CONVERT(INT, @alerta_hum) > 10)
BEGIN
    INSERT INTO Bi_alerta (alerta_hum, alerta_temp, alerta_lpg, alerta_co, alerta_fumo)
    VALUES (@alerta_hum, @alerta_temp, @alerta_lpg, @alerta_co, @alerta_fumo)
END

If that still doesn't work, you should check if you variables are all asigned after the reset with Bi_medicao. Simples way would be to insert some PRINT Statements like PRINT @alerta_hum