neo4j - cyhper combine two columns into a single -

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i couldn't find similar post, if know 1 or if question not proper one, please let me know.

i have query

match   (t:taxi {name:'taxi1813'})<-[:assigned]-(u2:user)-[rd2:drop_off]->   (g2:grid)-[r:to*1..2]-(g:grid)<-[rd:drop_off]-(u:user)-[:assigned]->(t) id(u2) < id(u) , rd2.time >= '04:38' , rd2.time <= '04:42' distinct u2, g2, u, g, rd2, rd match p=shortestpath((g2)-[r:to*1..2]-(g)) rd2, rd,u2, g2, u, g, p, reduce(totaltime = 0, x in relationships(p) | totaltime + x.time) totaltime totaltime <= 4 return u2.name, u.name

so @ end got 2 columns

u2.name  u.name user179  usertest user177  user179

is there way or function merge both columns single 1 , remove duplicates

users user179 user177 usertest

any suggestions? thank you

you can combine 2 collections single collection , return distinct items.

with ['user179', 'user177'] list1 , ['usertest', 'user179'] list2 unwind list1 + list2 item return distinct item

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