複数インデックスのクエリ
Querying Multiple Indices
Multiple indices can be queried by executing a query using one of the following formats:
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Query all indices via the _all view: SELECT * FROM [_all]
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Query a list of indices: SELECT * FROM [index1,index2,index3]
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Query indices matching a wildcard pattern: SELECT * FROM [index*]
Note, index lists can contain wildcards and indices can be excluded by prefixing an index with '-'. For example: SELECT * FROM [index*,-index3]