union
UK[ˈju:niən] US[ˈjunjən]
n. Alliance, alliance; association, union; union, unity
adj. The plural of unions
: unions
store
##UK[stɔ:(r)] US[stɔr, stor]n. Store; storage; warehouse; large amount v. Storage; (in a computer) storage Third person singular: stores Plural: stores Present participle: storing Past tense: stored past participle: stored
redis SUNIONSTORE command syntax
Function:This command is similar to the SUNION command, but it saves the results to the destination collection instead of simply returning the result set. If destination already exists, it is overwritten. destination can be the key itself.
Syntax: SUNIONSTORE destination key [key ...]
Available versions: >= 1.0.0
Time complexity: O(N), N is the sum of the number of members of all given sets.
Returns: The number of elements in the result set.
redis SUNIONSTORE command example
redis> SMEMBERS NoSQL 1) "MongoDB" 2) "Redis" redis> SMEMBERS SQL 1) "sqlite" 2) "MySQL" redis> SUNIONSTORE db NoSQL SQL (integer) 4 redis> SMEMBERS db 1) "MySQL" 2) "sqlite" 3) "MongoDB" 4) "Redis"