Dispaly bind data in listview in C#

Question

1.00/5 (1 vote)

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SQL-Server-2008R2

I want to bind the worker information for type. The emplyee table and casualstaff table are linked. When I Choose the Permanent in ComboBox I want to display all of the parment staffs not include from the casualstaff table and when I choose the casual in combobox display all the casual staffs.

What I have tried:

SQL

DECLARE	@Staff_Type Varchar(10)

SELECT 
		'Employee Id' 	= EE.StaffID
	,	'Name'  	= RTRIM(LTRIM(EE.Name))

	FROM 
		Employee 		EE
		CasualStaff		CS
	WHERE 	(EE.StaffID=CS.StaffID
			@Staff_Type='Casual')
	OR		(EE.StaffID!=CS.StaffID
			@Staff_Type='Permanent')

Posted 19-Mar-18 21:41pm

Member 13338075

Updated 20-Mar-18 3:43am

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Richard Deeming · Accepted Answer · 2018-03-20T03:44:00

Your question isn't completely clear, but I'm guessing you want something like this:

SQL

SELECT
    'Employee Id' = EE.StaffID,
    'Name' = RTRIM(LTRIM(EE.Name))
FROM
    Employee As EE
WHERE
(
    @Staff_Type = 'Casual'
And
    Exists
    (
        SELECT 1
        FROM CasualStaff As CS
        WHERE CS.StaffID = EE.StaffID
    )
)
Or
(
    @Staff_Type = 'Permanent'
And
    Not Exists
    (
        SELECT 1
        FROM CasualStaff As CS
        WHERE CS.StaffID = EE.StaffID
    )
)

NB: It would probably be simpler to have a flag on the Employee table to indicate the type of employee; but that depends on what else you're using the CasualStaff table for.