decompoundQuery

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Usage

• If true (default), compound words are split into multiple parts to improve recall. For example, the Dutch query "schoolboeken" (school books) will match "school", "boeken", and "schoolboeken".
• If false, compound words are matched as-is.
  This is useful when you want to preserve precise matches for product names, legal terms, or brand names.
  For example, "gartenstühle" (garden chairs in German) would only match "gartenstühle".
• Decompounding doesn’t apply to decomposed Unicode characters with combining marks. For example, "Gartenstühle" (using u + combining ◌̈) won’t be split, but "Gartenstühle" (single ü character) will be.
• To control decompounding for individual attributes, see decompoundedAttributes.

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Examples

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Enable splitting compound words by default

var response = await client.SetSettingsAsync(
  "INDEX_NAME",
  new IndexSettings { DecompoundQuery = true }
);

IndexSettings settings = new IndexSettings
{
  DecompoundQuery = true
};

index.SetSettings(settings);

// Asynchronous
await index.SetSettings(settings);

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Enable splitting compound words for the current search

var response = await client.SearchSingleIndexAsync<Hit>(
  "INDEX_NAME",
  new SearchParams(new SearchParamsObject { Query = "query", DecompoundQuery = true })
);

var result = index.Search(new Query("query string")
{
  DecoumpoundQuery = true
});