Internal
'$nin' operator expression. Tests for an attribute not to be equal to any of the values in a list of values.
{a: {$nin: [1,2,3,4]} } Copy
{a: {$nin: [1,2,3,4]} }
This is semantically equivalent to:
{$not:{$or: [{a:{$eq:1}},{a:{$eq:2}},{a:{$eq:3}},{a:{$eq:4}}]}}} Copy
{$not:{$or: [{a:{$eq:1}},{a:{$eq:2}},{a:{$eq:3}},{a:{$eq:4}}]}}}
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List of values to check against.
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'$nin' operator expression. Tests for an attribute not to be equal to any of the values in a list of values.
This is semantically equivalent to: