Studio Pro 8 has reached its end of support. To upgrade to a supported version, see Moving from Mendix Studio Pro 8 to 9.

OQL Where Clause

Last modified: August 27, 2024

The WHERE clause specifies how the data being retrieved must be constrained.

The syntax is as following:

WHERE <constraint>

<constraint> An expression for which the value always equals true. Expressions consist of simple comparisons using operators, functions, keywords or system variables.

SELECT FirstName FROM Sales.Customer
WHERE LastName = 'Jansen'

This query retrieves all customers whose name is equal to 'Jansen'.

SELECT FirstName FROM Sales.Customer
INNER JOIN Sales.Customer/Sales.Customer_Address/Sales.Address
WHERE Sales.Address/City = 'Rotterdam'

This query retrieves all customers who live in 'Rotterdam'.