apoc.when

This procedure is not considered safe to run from multiple threads. It is therefore not supported by the parallel runtime (introduced in Neo4j 5.13). For more information, see the Cypher Manual → Parallel runtime.

Details
Syntax	`apoc.when(condition, ifQuery [, elseQuery, params ]) :: (value)`
Description	This procedure will run the read-only `ifQuery` if the conditional has evaluated to true, otherwise the `elseQuery` will run.
Input arguments	Name	Type	Description
	`condition`	`BOOLEAN`	The predicate deciding if to run the `ifQuery`or not.
	`ifQuery`	`STRING`	The Cypher statement to run if the condition is true.
	`elseQuery`	`STRING`	The Cypher statement to run if the condition is false. The default is: ``.
	`params`	`MAP`	The parameters for the given Cypher statement. The default is: `{}`.
Return arguments	Name	Type	Description
Return arguments	`value`	`MAP`	The result returned from the evaluated Cypher query.

Usage examples

CALL apoc.when(false, 'RETURN 7 as b');

Results
value
{}

CALL apoc.when(true, 'RETURN $a + 7 as b', 'RETURN $a as b',{a:3})

Results
value
{b: 10}