apoc.map.mergeList

Details
Syntax	`apoc.map.mergeList(maps)`
Description	Merges all `MAP` values in the given `LIST<MAP<STRING, ANY>>` into one `MAP`.
Arguments	Name	Type	Description
	`maps`	`LIST<MAP>`	A list of maps to merge.
Returns	`MAP`

Usage Examples

The following merges multiple maps:

RETURN apoc.map.mergeList([
    {name: "Cristiano Ronaldo"},
    {dob: date("1985-02-05")},
    {country: "Portugal"}
]) AS output;

Results
Output
`{ "name": "Cristiano Ronaldo", "country": "Portugal", "dob": "1985-02-05" }`

apoc.map.mergeList iterates over the list sequentially as it merges. This means that if the same key is used for different values, the last unique key-value pair in the list will be in the resulting map.

RETURN apoc.map.mergeList([
    {name: "Cristiano Ronaldo"},
    {dob: date("1985-02-05")},
    {profession: "Athlete"},
    {profession: "Football player"}
]) AS output;

Results
Output
`{ "name": "Cristiano Ronaldo", "profession": "Football player", "dob": "1985-02-05" }`