Is there a way to lock a soql record?
Anyone can get access to it through a standard SOQL query (aka not attempting to lock it) still, but if they attempt to access it with FOR UPDATE as well, the system will return the QueryException blocking both transactions from locking the record. The delay will occur on DML.
What happens when a record is locked in Salesforce?
The client locking the records can perform logic on the records and make updates with the guarantee that the locked records won’t be changed by another client during the lock period. The lock gets released when the transaction completes.
What happens when a client locks a record?
The client locking the records can perform logic on the records and make updates with the guarantee that the locked records won’t be changed by another client during the lock period. The lock gets released when the transaction completes.
How to skip locked rows in SQL Server?
ORDER BY ) ) loop select a.pkey from a where a.pkey=x.pkey for update skip locked; i++; if i== ival then exit; end if; end loop; Even though this works wanted to know if there is a better approach in skip locked rows with a limit clause or any alternative in SQL itself.
What happens when you query record with for update?
When you query a record with FOR UPDATE, it will lock the record for that transaction. Anyone can get access to it through a standard SOQL query (aka not attempting to lock it) still, but if they attempt to access it with FOR UPDATE as well, the system will return the QueryException blocking both transactions from locking the record.
How to lock a set of sobject Records in apex?
To lock a set of sObject records in Apex, embed the keywords FOR UPDATE after any inline SOQL statement. For example, the following statement, in addition to querying for two accounts, also locks the accounts that are returned: