Answers for "replace value with null sql"

replace null with 0 in sql

SELECT IFNULL(Price, 0) FROM Products;
SELECT COALESCE(Price, 0) FROM Products;
-- Oracle (extra):
SELECT NVL(Price, 0) FROM Products;

replace null in sql

CASE WHEN ColumnName IS NULL THEN 'anyText' 
ELSE ColumnName END 
---------EXAMPLE --------------------------
SELECT E.Name as Employee, CASE WHEN M.Name IS NULL THEN 'No Manager' 
   ELSE M.Name END as Manager
FROM  tblEmployee E
LEFT JOIN tblEmployee M
ON   E.ManagerID = M.EmployeeID