Question

I want to create a view for this sql statement which previously works fine. But when I create this into a view, A error prompting out showing that, "View's SELECT contains a variable or parameter." Can anyone tell me where the error falls as I am quite new to views in MySQL. Thanks!

CREATE VIEW `satsschema`.`viewTimeBreak` AS 
SELECT a.EmpName, CONCAT(b.StartTime, '-', b.EndTime) AS ShiftTime, CONCAT(a.EmpTime,     '-', ADDTIME(a.EmpTime, '0 1:0:0.000000')) AS BreakTime, a.Break, 
                     a.EmployeeOnBreak, '' AS SignIn, '' AS SignOut
FROM            satsschema.employeeslot a INNER JOIN
                     satsschema.ufis b ON b.UFISID = a.UFISEmpGroup
WHERE        (a.AllocationDate = @AllocationDate) AND (a.LocationName = @LocationName)   AND (a.Break = 1)
GROUP BY a.EmpName

This part shows the error when I tried to create a view using the sql statement.

Answer 1

You cannot have variables like @AllocationDate and @LocationName used in the query definition of a view itself.

Instead what you can do is

CREATE VIEW `satsschema`.`viewTimeBreak` AS 
SELECT 
    a.EmpName, 
    CONCAT(b.StartTime, '-', b.EndTime) AS ShiftTime, CONCAT(a.EmpTime,     '-', ADDTIME(a.EmpTime, '0 1:0:0.000000')) AS BreakTime, 
    a.Break, 
    a.EmployeeOnBreak, '' AS SignIn, 
    '' AS SignOut,
    a.AllocationDate,
    a.LocationName 
FROM            
    satsschema.employeeslot a 
    INNER JOIN satsschema.ufis b 
            ON b.UFISID = a.UFISEmpGroup

And then put the conditions at the time of using the view

so your SELECT statement would be

SELECT * FROM `satsschema`.`viewTimeBreak` a 
WHERE 
(a.AllocationDate = @AllocationDate) 
AND (a.LocationName = @LocationName)   
AND (a.Break = 1)
GROUP BY a.EmpName