CASE statement in SQL returns Null CASE statement in WHERE clause for IS NULL: I want to say IS or IS NOT Null for a column using CASE Case Statement in Where clause with parameters SQL Server CASE statement inclusion and exclusions case statement inside a where clause with 'IN' operator ...
The key to using simple CASE statements effectively is understanding how to compare an expression to fixed values.The expression in a simple CASE statement can be a column name, a function, or any valid SQL expression. The values in the WHEN clauses are the fixed values against which we wan...
In the following query, we are using multiple WHEN and THEN conditions to the CASE statement along with the ELSE clause.If the AGE of the customer is greater than 30, it returns Gen X otherwise moves to the further WHEN and THEN conditions. If none of the conditions is matched with the...
In a SELECT statement, WHERE clause is optional. Using SELECT without a WHERE clause is useful for browsing data from tables.In a WHERE clause, you can specify a search condition (logical expression) that has one or more conditions. When the condition (logical expression) evaluates to true ...
, IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row WHEN n_str = 'phoneNumberMobile' THEN ...
This method is useful when we need to update multiple rows with different values based on a specific condition using CASE WHEN. Syntax: UPDATE table_name SET column_name = CASE WHEN condition1 THEN value1 WHEN condition2 THEN value2 ELSE column_name END WHERE columnname IN (value1, ...)...
The following operators can be used in the WHERE clause:OperatorDescriptionExample = Equal Try it > Greater than Try it < Less than Try it >= Greater than or equal Try it <= Less than or equal Try it <> Not equal. Note: In some versions of SQL this operator may be written as !=...
Using CASE in WHERE Clause Another benefit of CASE statement is that it enable to filter rows based on specific conditions. For example, we can apply different ROI thresholds based on tha language of the film. It’s known that English films have consistently high ROI. So, the threshold shoul...
CASE With ELSE ACASEstatement can have an optionalELSEclause. TheELSEclause is executed if none of the conditions in theCASEstatement is matched. Syntax SELECTcustomer_id, first_name,CASEWHENcondition1THENresult1WHENcondition2THENresult2-- Add more WHEN conditions and results as neededELSEelse_resu...
, IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row WHEN n_str = 'phoneNumberMobile' THEN ...