How to do a wildcard or regex match on _id in elasticsearch?

Question

From below sample elasticsearch data I want to apply wildcard say *.000ANT.* on _id so as to fetch all docs whose _id contains 0

Answer 1

Try this

{
   "filter": {
      "bool": {
         "must": [
            {
               "regexp": {
                  "_uid": {
                     "value": ".*000ANT.*"
                  }
               }
            }
         ]
      }
   }
}