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How to run 2 Queries inside a stored Function


How to run 2 Queries inside a stored Function

By : user238606
Date : November 17 2020, 01:00 AM
Hope that helps I'm New to Functions in SQL and am hoping for some Guidance. I have a Function in SQL that i'd like to add another query to, but I can't quite figure out how to make it happen. , Using both of your queries, in an inline table-valued function:
code :
ALTER FUNCTION dbo.CountVisits
(@startdate Datetime,
 @enddate Datetime,
)
RETURNS TABLE
AS
  RETURN
    SELECT
      (SELECT     
         COUNT(DISTINCT Invoice_Number) AS TotalVisits
       FROM         
         Invoice_Tb
       WHERE 
         dtcreated >= @startdate 
         AND dtcreated <= @enddate 
         AND Service_Id = '1') AS TotalVisits,
      (SELECT     
         COUNT(DISTINCT Invoice_Number) AS TotalVisitsALL
       FROM
         Daily_TB
       WHERE
         dtcreated >= @startdate 
         AND dtcreated <= @enddate) AS TotalVisitsALL
ALTER FUNCTION dbo.CountVisits
(@startdate Datetime,
 @enddate Datetime,
)
RETURNS @tvData TABLE (TotalVisits INT, TotalVisitsALL INT)
AS
BEGIN
  DECLARE @TotalVisits INT, @TotalVisitsALL INT;

  SELECT
    @TotalVisits = COUNT(DISTINCT Invoice_Number)
  FROM         
    Invoice_Tb
  WHERE 
    dtcreated >= @startdate 
    AND dtcreated <= @enddate 
    AND Service_Id = '1';

  SELECT     
    @TotalVisitsALL = COUNT(DISTINCT Invoice_Number)
  FROM
    Daily_TB
  WHERE
    dtcreated >= @startdate 
    AND dtcreated <= @enddate;

  INSERT INTO @tvData(TotalVisits,TotalVisitsALL)
  VALUES(@TotalVisits,@TotalVisitsALL);

  RETURN;
END


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linq-to-sql: Stored procedures cannot be used inside queries

linq-to-sql: Stored procedures cannot be used inside queries


By : ojkey
Date : March 29 2020, 07:55 AM
will be helpful for those in need Because you can't call a stored procedure within a select statement.
Your command would look something like this in tsql... but this is not valid.
code :
select b.Id
    from aTable a
    inner join (exec SomeStoredProcedure) b on a.Id = b.Id
var foo = (from a in aTable 
    from b in this.SomeStoredProcedure().ToList()
    where a.Id == b.Id
    select b.Id);
Can we write a stored function inside a stored procedure in Mysql

Can we write a stored function inside a stored procedure in Mysql


By : Cornelius Foobaz
Date : March 29 2020, 07:55 AM
I wish this help you How can we write a stored function inside a stored procedure ? in Mysql. Is it possible? If possible any examples for calling the function from that stored procedure? , Yes you can do that.
Suppose you have a stored procedure as:
code :
DELIMITER //
CREATE PROCEDURE country_hos(IN con CHAR(20), out Name)
BEGIN
SELECT Name, HeadOfState FROM Country
WHERE Continent = con;
END //
DELIMITER ;
DELIMITER //
CREATE PROCEDURE country_hos2(IN con CHAR(20))
BEGIN

call country_hos('Europe', @result);
set xyz := select @result;

END //
DELIMITER ;
Why the VARCHAR variable not working to use inside queries as column names in mysql stored procedures?

Why the VARCHAR variable not working to use inside queries as column names in mysql stored procedures?


By : diongat
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You are getting close: Change your code to create a VARCHAR with your SQL in it, use IF/ELSE logic to concatenate your order by in there. Then pass this SQL to the prepared statement:
code :
SET @sql = "Your SQL";
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
Stored Function with Multiple Queries and Different Selected Columns

Stored Function with Multiple Queries and Different Selected Columns


By : Justin George
Date : March 29 2020, 07:55 AM
I hope this helps you . You can use multi-statement function but you need to specify all columns which will be returned by 3 select statements. It seems it's impossible return multiple result sets.
code :
CREATE FUNCTION MyFun
(
    @Reporttype int,
    @startdate datetime
)
RETURNS 
@Result TABLE 
(
    lcustomerid int, 
    lname nvarchar(50),
    fname nvarchar(50),
    barcode int,
    thetime datetime,
    name nvarchar(50)
)
AS
BEGIN
    If @Reporttype = '1'
        insert into @Result (lcustomerid, lname, fname)
        select lcustomerid, lname, fname
        from customers
        Where dtcreated > @startdate

    Else if @Reporttype = '2'
        insert into @Result (barcode, lname, fname)
        Select barcode, lname, fname 
        from employees
        where dtcreated > @startdate

    Else if @reporttype = '3'
        insert into @Result (thetime, lname, name, barcode, lcustomerid)
        Select thetime, lname, name, barcode, lcustomerid
        from customers
        where dtcreated > @startdate

    RETURN 
END
SELECT * FROM dbo.MyFun (1, getdate())
Will a stored procedure fail if one of the queries inside it fails?

Will a stored procedure fail if one of the queries inside it fails?


By : Roland
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Potentially. It depends on the severity level of the fail.
User code errors are normally 16.
code :
DECLARE @errnum AS int;
-- Run the insert code
SET @errnum = @@ERROR;
PRINT 'Error code: ' + CAST(@errornum AS VARCHAR);
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