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From vkulichenko <valentin.kuliche...@gmail.com>
Subject Re: Multiple cache in a single query
Date Tue, 08 Nov 2016 04:44:07 GMT

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nsarvar wrote
> I have multiple caches:
> IgniteCache&lt;String, WikiPage&gt; stmCache1 =
> ignite.getOrCreateCache(CacheConfig.wordCache("node1"));
> IgniteCache&lt;String, WikiPage&gt; stmCache2 =
> ignite.getOrCreateCache(CacheConfig.wordCache("node2"));
> IgniteCache&lt;String, WikiPage&gt; stmCache3 =
> ignite.getOrCreateCache(CacheConfig.wordCache("node3"));
> How can I get their results in a single query?
> SqlFieldsQuery top10Qry = new SqlFieldsQuery("select CURTIME(), pageName
> from WikiPage");
> List&lt;List&lt;?&gt;> result = stmCache1.query(top10Qry).getAll();
> By this way, I need to get results for each cache seperately.

You can use UNION in your SQL query and it will solve this problem. However,
why do you have multiple caches with the same data type in the first place?
Is there any particular reason?


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