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DOCS-14756: minor fixes to multikey-index-bounds.txt and index-wildcard.txt #5722

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Merged
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Aug 25, 2021
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DOCS-14756: minor fixes to multikey-index-bounds.txt and index-wildcard.txt #5722

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82fc85f
Update multikey-index-bounds.txt
RafaelGreen1 Aug 21, 2021
e80a375
Update index-wildcard.txt
RafaelGreen1 Aug 22, 2021
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4 changes: 2 additions & 2 deletions source/core/index-wildcard.txt
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Expand Up @@ -439,15 +439,15 @@ Consider the following wildcard index on the ``employees`` collection:

.. code-block:: javascript

db.products.createIndex( { "$**" : 1 } )
db.employees.createIndex( { "$**" : 1 } )
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Thank you for this fix!


The following operation queries for a single field
``lastName`` and projects out all other fields from the
resulting document:

.. code-block:: javascript

db.products.find(
db.employees.find(
{ "lastName" : "Doe" },
{ "_id" : 0, "lastName" : 1 }
)
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6 changes: 3 additions & 3 deletions source/core/multikey-index-bounds.txt
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Expand Up @@ -349,10 +349,10 @@ field ``ratings`` to require that the array contains at least one

Taking the predicates separately:

- the bounds for the ``score: { $lte: 5 }`` predicate is ``[ -Infinity, 5
]``;
- the bounds for the ``score: { $lte: 5 }`` predicate are ``[ [ -Infinity, 5
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I agree with changing "is" to "are", but what is the motivation for the double square brackets?

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@RafaelGreen1 RafaelGreen1 Aug 25, 2021 •
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It appears like this in all other places on this page. Search "[ [" to see the other occurrences.
It makes sense to me because bounds are arrays of arrays. For example [ [1,3], [8,10] ]

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Got it, thank you for clarifying! You're absolutely correct.

] ]``;

- the bounds for the ``by: "anon"`` predicate is ``[ "anon", "anon" ]``.
- the bounds for the ``by: "anon"`` predicate are ``[ [ "anon", "anon" ] ]``.

MongoDB can compound the two bounds to use the combined bounds of:

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