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Kenneth Reitz
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2.7 KiB
ReStructuredText
46 lines
2.7 KiB
ReStructuredText
`|Redis Documentation| <index.html>`_
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**ZunionCommand: Contents**
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`ZUNIONSTORE \_dstkey\_ \_N\_ \_k1\_ ... \_kN\_ \`[\`WEIGHTS \_w1\_ ... \_wN\_\`]\` \`[\`AGGREGATE SUM\|MIN\|MAX\`]\` (Redis > <#ZUNIONSTORE%20_dstkey_%20_N_%20_k1_%20...%20_kN_%20%60[%60WEIGHTS%20_w1_%20...%20_wN_%60]%60%20%60[%60AGGREGATE%20SUM%7CMIN%7CMAX%60]%60%20%20(Redis%20%3E>`_
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`ZINTERSTORE \_dstkey\_ \_N\_ \_k1\_ ... \_kN\_ \`[\`WEIGHTS \_w1\_ ... \_wN\_\`]\` \`[\`AGGREGATE SUM\|MIN\|MAX\`]\` (Redis > <#ZINTERSTORE%20_dstkey_%20_N_%20_k1_%20...%20_kN_%20%60[%60WEIGHTS%20_w1_%20...%20_wN_%60]%60%20%60[%60AGGREGATE%20SUM%7CMIN%7CMAX%60]%60%20%20(Redis%20%3E>`_
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`Return value <#Return%20value>`_
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ZunionCommand
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=============
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ZUNIONSTORE \_dstkey\_ \_N\_ \_k1\_ ... \_kN\_ \`[\`WEIGHTS \_w1\_ ... \_wN\_\`]\` \`[\`AGGREGATE SUM\|MIN\|MAX\`]\` (Redis >
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=============================================================================================================================
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1.3.12) =
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ZINTERSTORE \_dstkey\_ \_N\_ \_k1\_ ... \_kN\_ \`[\`WEIGHTS \_w1\_ ... \_wN\_\`]\` \`[\`AGGREGATE SUM\|MIN\|MAX\`]\` (Redis >
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=============================================================================================================================
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1.3.12) =
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*Time complexity: O(N) + O(M log(M)) with N being the sum of the sizes of the input sorted sets, and M being the number of elements in the resulting sorted set*
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Creates a union or intersection of *N* sorted sets given by keys
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*k1* through *kN*, and stores it at *dstkey*. It is mandatory to
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provide the number of input keys *N*, before passing the input keys
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and the other (optional) arguments.
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As the terms imply, the ZINTERSTORE command requires an element to
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be present in each of the given inputs to be inserted in the
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result. The ZUNIONSTORE command inserts all elements across all
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inputs.
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Using the WEIGHTS option, it is possible to add weight to each
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input sorted set. This means that the score of each element in the
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sorted set is first multiplied by this weight before being passed
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to the aggregation. When this option is not given, all weights
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default to 1.
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With the AGGREGATE option, it's possible to specify how the results
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of the union or intersection are aggregated. This option defaults
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to SUM, where the score of an element is summed across the inputs
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where it exists. When this option is set to be either MIN or MAX,
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the resulting set will contain the minimum or maximum score of an
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element across the inputs where it exists.
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Return value
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------------
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`Integer reply <ReplyTypes.html>`_, specifically the number of
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elements in the sorted set at *dstkey*.
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.. |Redis Documentation| image:: redis.png |