https://stackoverflow.com › questions › 20016318

In this case if the y expression is null, it will throw an exception, I know I can check for null before building the query, but in a huge query this can be a nightmare. So is there any way or a value to tell the expression to be ignored when executing the expression ?

https://stackoverflow.com › questions › 17850726

The COALESCE function in SQL returns the first non-NULL expression among its arguments. Here for example if the @param1 is equal to null the function will return col1 which will lead to col1=col1 in the where statement which is like 1=1 meaning the condition will always be true.

https://www.baeldung.com › java-avoid-null-check

Learn several strategies for avoiding the all-too-familiar boilerplate conditional statements to check for null values in Java.

https://www.baeldung.com › java-null-safe-streams-from-collections

To prevent unintended null pointer exceptions, we can opt to add checks to prevent null references when creating streams from collections: Stream<String> collectionAsStream(Collection<String> collection) { return collection == null ?

https://www.thomasclaudiushuber.com › 2020 › 03 › 12 › c-different-ways-to-check-for-null

What is the classic way to check if for example a parameter value is null? If you’ve developed with C# since a while, you might be familiar with this classic syntax: public static int CountNumberOfSInName(string name) . { if (name == null) { throw new ArgumentNullException(nameof (name)); }

https://learn.microsoft.com › en-us › ef › core › querying › null-comparisons

It's possible to disable the null comparison compensation and use relational null semantics directly. This can be done by calling UseRelationalNulls(true) method on the options builder inside OnConfiguring method:

https://developer.salesforce.com › ... › soql_sosl › sforce_api_calls_soql_null.htm

You can search for null values by using the null keyword in SOQL queries. This example query returns the account IDs of all events with a non-null activity date. SELECT AccountId. FROM Event. WHERE ActivityDate != null. If you run a query on a boolean field, null matches FALSE values.

https://www.oracletutorial.com › oracle-basics › oracle-is-null

In this tutorial, you will learn how to use the Oracle IS NULL and IS NOT NULL operators to check if a value in a column or an expression is NULL or not.