can you tell me size of tableA and execution time for the below query?

SELECT * from FROM tableA

UPDATE A SET A.IsError=1 FROM Table1 A LEFT JOIN Table2 B ON B.Id=A.Id LEFT JOIN Table3 C ON C.Id = A.Id WHERE (C.Id IS NOT NULL OR B.Id IS NOT NULL) UPDATE A SET A.IsError=1 FROM Table1 A LEFT JOIN Table2 B ON B.Id = A.Id LEFT JOIN Table3 C ON C.Id = A.Id WHERE (C.Id IS NOT NULL OR B.Id IS NOT NULL)

Thanigaivel.