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|| (OR) (Entity SQL)

  • Article

Combines two Boolean expressions.

Syntax

boolean_expression OR boolean_expression
-- or
boolean_expression || boolean_expression

Arguments

boolean_expression Any valid expression that returns a Boolean.

Return Value

true when either of the conditions is true; otherwise, false.

Remarks

OR is an Entity SQL logical operator. It is used to combine two conditions. When more than one logical operator is used in a statement, OR operators are evaluated after AND operators. However, you can change the order of evaluation by using parentheses.

Double vertical bars (||) have the same functionality as the OR operator.

The following matrix shows possible input value combinations and return values.

TRUE FALSE NULL
TRUE TRUE TRUE TRUE
FALSE TRUE FALSE NULL
NULL TRUE NULL NULL

Example

The following Entity SQL query uses the OR operator to combine two Boolean expressions. The query is based on the AdventureWorks Sales Model. To compile and run this query, follow these steps:

  1. Follow the procedure in How to: Execute a Query that Returns StructuralType Results.

  2. Pass the following query as an argument to the ExecuteStructuralTypeQuery method:

-- OR
SELECT VALUE product FROM AdventureWorksEntities.Products 
    AS product 
WHERE product.ListPrice = @price1 OR product.ListPrice = @price2
-- || 
SELECT VALUE product FROM AdventureWorksEntities.Products 
    AS product 
WHERE product.ListPrice = @price1 || product.ListPrice = @price2

See also