The SQL CASE statement is used to check conditions and perform tasks on each row while selecting data. In this tutorial, you will learn about the SQL CASE statement with the help of examples.
CASE can not only be used in SELECT statements, but at any other place where an expression can be written. This includes UPDATE, DELETE, SET, MERGE, a WHERE or HAVING clause and an ORDER BY clause. Let’s illustrate with some examples. Suppose we want to sort our data by Jobtitle, b...
This SQL tutorial explains how to use the SQL WHERE clause with syntax and examples. The SQL WHERE clause is used to filter the results and apply conditions in a SELECT, INSERT, UPDATE, or DELETE statement.
FROM table_name WHERE condition; Note: The WHERE clause is not only used in SELECT statements, it is also used in UPDATE, DELETE, etc.!Demo DatabaseBelow is a selection from the Customers table used in the examples:CustomerIDCustomerNameContactNameAddressCityPostalCodeCountry 1 Alfreds Futterkis...
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 case statement in SQL returns a value on a specified condition. We can use a Case statement in select queries along with Where, Order By, and Group By clause. It can be used in the Insert statement as well. In this article, we would explore the CASE statement and its various use...
Text Field in Where clause condition In the above examples, we have seen that when the condition required numeric values in conditions such as employee salary & employee age, we didn’t require the quotes. However when the condition involves a column that has text value then in such case we...
This Oracle tutorial explains how to use the Oracle WHERE clause with syntax and examples.Description The Oracle WHERE clause is used to filter the results from a SELECT, INSERT, UPDATE, or DELETE statement.Syntax The syntax for the WHERE clause in Oracle/PLSQL is: WHERE conditions; Parameters...
SET IsStatementSent = 1 WHERE CustomerID = @CustomerID; END; EXISTS in a WHERE Clause Using an EXISTS function call in a WHERE clause is probably the most common use case. The function will work exactly the same as in each earlier example, but there is one noticeable change. The subquer...
SQL WHERE statement with Characters comparison By default, SQL Server performs case-insensitive searches. You can filter records from the table using the characters such as strings. For example, below, the query returns the records having product names specified in the where clause. ...