Placing the AND operator between two conditions means that both conditions must be met in order for the result to be “true”.
These symbols are also known as “ logical operators” and are mainly used in programming languages. In this case it internally adds the exact form modifier to all terms in the phrase.The operators can be expressed in symbols as well as in words.
It is possible to apply an exact form modifier to the phrase operator. This is a modifier that affects the keyword and thus can be used within operators such as phrase, proximity, and quorum operators. with index_exact_words=1 + expand_keywords=1/star bcd will find a document containing abcde, but =bcd will not. Exact form operator requires index_exact_words option to be enabled.Īnother use case is to avoid expanding a keyword to its *keyword* form. For instance, "runs" query will match both the document that contains "runs" and the document that contains "running", because both forms stem to just "run" while =runs query will only match the first document. The default behaviour is to match the document if the stemmed/lemmatized keyword matches. Subject and body then is equivalent to hello worldĮxact form modifier raining =cats and =dogsĮxact form keyword modifier will match the document only if the keyword occurred in exactly the specified form. Ignore multiple-field search operator (if we have fields title, Ignore field search operator (will ignore any matches of 'hello world' from field 'title'): hello world Multiple-field search operator: hello world For example, hello will not match the documents where the keyword hello occurs at position 51 and below in the body. This can be helpful when searching through heterogeneous tables with different schemas.įield position limit additionally restricts the searching to first N position within given field (or fields). However, that can be suppressed by specifying option at the very beginning of the query: my query Normally, query will fail with an error message if given field name does not exist in the searched table. Using the full-text query syntax matching is performed over all indexed text fields of a document, unless the expression requires to be match within a field (like phrase search) or limited by field operators.įield limit operator limits subsequent searching to a given field. There must be at most one MATCH() in the SELECT clause. A query without a match clause is called a fullscan. The attribute filters are applied on the result set of the match query. The match query is always executed first in the filtering process, followed by the attribute filters. OR relation between full-text matches and attribute filters are not supported. The full-text match clauses can be combined with attribute filters as an AND boolean. In addition to tokenization of input text, the query string supports a number of full-text operators that allow enforcing different rules on how keywords should provide a valid match. The query string at input is tokenized using same settings applied to the text during indexing. The MATCH clause allows to perform full-text searches in text fields.
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