![]() ![]() Syntax: ) for the Name field in the find() method. If you want to use Perl compatible regular expressions support regular expressions that are not supported in JavaScript, then you must use $regex operator.It is the easiest way to match rather than scanning all the collections For case-insensitive regular expression queries, they do not utilize index effectively. For case-sensitive regular expression queries, if the index of the specified field is available, then MongoDB matches the regular expression to the values in the index.Starting from the latest version of MongoDB(i.e., 4.0.7) you are allowed to use $not operator with $regex operator expression.If you want to use x and s options then you have to use $regex operator expression with $options.If you want to add a regular expression inside a comma-separated list of a query condition, then you have to use the $regex operator.You are not allowed to use $regex operator inside $in operator.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.DevOps Engineering - Planning to Production.Python Backend Development with Django(Live). ![]()
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