apoc.map.groupByMulti

Details
Syntax	`apoc.map.groupByMulti(values, key)`
Description	Creates a `MAP` of the `LIST<ANY>` values keyed by the given property, with the `LIST<ANY>` values.
Arguments	Name	Type	Description
	`values`	`LIST<ANY>`	A list of map values to be grouped.
	`key`	`STRING`	The key to group the map values by.
Returns	`MAP`

Usage Examples

The following creates a map keyed by club, with list values:

RETURN apoc.map.groupByMulti([
	{name: "Cristiano Ronaldo", club: "Juventus"},
    {name: "Lionel Messi", club: "Barcelona"},
    {name: "Aaron Ramsey", club: "Juventus"},
    {name: "Luiz Suarez", club: "Barcelona"}
], "club") AS output;

Output

Results
Output
`{ "Juventus": [ { "name": "Cristiano Ronaldo", "club": "Juventus" }, { "name": "Aaron Ramsey", "club": "Juventus" } ], "Barcelona": [ { "name": "Lionel Messi", "club": "Barcelona" }, { "name": "Luiz Suarez", "club": "Barcelona" } ] }`

{
    "Juventus": [
      {
        "name": "Cristiano Ronaldo",
        "club": "Juventus"
      },
      {
        "name": "Aaron Ramsey",
        "club": "Juventus"
      }
    ],
    "Barcelona": [
      {
        "name": "Lionel Messi",
        "club": "Barcelona"
      },
      {
        "name": "Luiz Suarez",
        "club": "Barcelona"
      }
    ]
  }