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Type:
Task
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Resolution: Won't Fix
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Priority:
Minor - P4
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Affects Version/s: None
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Labels:None
Partial Index creation does not support regular expressions. For example, the following command will fail:
> db.mycollection.createIndex({'myarray.category':1}, {partialFilterExpression: {'myarray.category': {$regex: /^FOO/} }})
{
"ok": 0,
"errmsg": "unsupported expression in partial index: myarray.category regex /^FOO/\n",
"code": 67
}
It might good to note this (and/or list the supported expression types) in the Restrictions section.