druid/docs/content/SearchQuerySpec.md

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Search query specs define how a "match" is defined between a search value and a dimension value. The available search query specs are:

InsensitiveContainsSearchQuerySpec

If any part of a dimension value contains the value specified in this search query spec, regardless of case, a "match" occurs. The grammar is:

{
  "type"  : "insensitive_contains",
  "value" : "some_value"
}

FragmentSearchQuerySpec

If any part of a dimension value contains any of the values specified in this search query spec, regardless of case, a "match" occurs. The grammar is:

{ 
  "type" : "fragment",
  "values" : ["fragment1", "fragment2"]
}