Directing how to add a new array in the array collection?-CodePudding

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Directing how to add a new array in the array collection?

Time：09-18

With the update push??

CodePudding user response:

The

refer to the original poster a few days no reply:

with the update push??

Ready, gunning to directly with a push

CodePudding user response:

Mongos> Var a=[1, 2], b=[3, 4]
Mongos> A.c oncat (b)
[1, 2, 3, 4]
Mongos> Amy polumbo ush (b); A
[1, 2, 3, 4]