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Type:
New Feature
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Resolution: Done
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: None
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Execution Team 2021-08-09
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3
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Compound indexes build off the ascending and descending indexes idea. A createIndexes command on a time-series collection measurement field:
{
createIndexes: “abc”,
indexes: [ { key: { a : 1, b : 1 } } ]
}
will be equivalent to the following operation on the underlying buckets collection:
{
createIndexes: “system.buckets.abc”,
indexes: [
{ key: { control.max.a : 1, control.min.a : 1,
control.max.b : 1, control.min.b : 1 } }
]
}
Additionally, a createIndexes command on a time-series collection measurement field with both ascending and descending options:
{
createIndexes: “abc”,
indexes: [ { key: { a : 1, b : -1 } } ]
}
will be equivalent to the following operation on the underlying buckets collection:
{
createIndexes: “system.buckets.abc”,
indexes: [
{ key: { control.max.a : 1, control.min.a : 1,
control.min.b : -1, control.max.b : -1 } }
]
}
- related to
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- Closed
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