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How do I lock a record in SQL Server?
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Visual FoxPro
Catégorie:
Client/serveur
Titre:
How do I lock a record in SQL Server?
Divers
Thread ID:
00139278
Message ID:
00139278
Vues:
49
I have a table in our SQL Server database which holds the next available key for each table. When retrieving the next key I call the function below. It worked great while I was the only one logged in. Now we have testers in the system and I am receiving Table Update errors. It's my understanding that remote views can only be optimistically locked. Is that true? How could I do a SEEK...RLOCK...REPLACE...UNLOCK?

tia



function GetNextKey

lparameter cTable

local nRetVal

nRetVal = 0

select NEXTKEY ;
from tls_KeyCollection ;
where upper(TABLENAME) == upper(cTable) ;
into cursor C_KEY

if _tally = 1
update tls_KeyCollection ;
set NEXTKEY = C_KEY.NEXTKEY + 1 ;
where upper(TABLENAME) == upper(cTable)

nRetVal = C_KEY.NEXTKEY
endif

use in C_KEY

return nRetVal
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