ZUNION

Note

Official reference: ZUNION.

Read a union and aggregate scores of shared members.

Syntax

ZUNION numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX] [WITHSCORES]

numkeys must match the number of following source keys.

WEIGHTS supplies one weight per source key, in key order; the default is 1. AGGREGATE chooses sum, minimum or maximum, default SUM.

Results

Return	Rows	Content
ResultSet	multiple	ELEMENT field, STRING type SCORE field, DOUBLE type (when using WITHSCORES)

Example

ZADD demo:ranking 10 alice 20 bob
ZADD demo:other 30 alice
ZUNION 2 demo:ranking demo:other WEIGHTS 1 2 AGGREGATE MAX WITHSCORES