Query language specification Leave feedback

The text below represents the complete specification of the search query DSL (Domain Specific Language) used in text queries. See also Search operation table, Search flow.

query:

• regex-query
• non-regex-query

regex-query:

• ^pattern

non-regex-query:

• unary-query
• binary-query

unary-query:

• word
• word-pattern (since v.18.12)
• phrase-query
• field-name-query
• numeric-range-query
• date-range-query
• parenthesized-query
• not-query

phrase-query:

• phrase-item-list

phrase-item-list:

• phrase-item phrase-item
• phrase-item-list phrase-item

phrase-item:

• word
• word-pattern (since v.18.12)
• wildcard (since v.18.1)

word:

• any word without special characters

word-pattern (since v.18.12)

• any non-special characters
• ? (question marks)
• ?(n~m) (Wildcard groups, where n is byte-number, m is byte-number, and n <= m. For example: ?(1~2) )

wildcard: (since v.18.1)

• * byte-number
• * byte-number ~~ byte-number

byte-number: (since v.18.1)

• Any integer number in the range from 0 to 255

field-name-query:

• field-name: unary-query

numeric-range-query:

• number ~~ number

number:

• Any non-negative integer number

date-range-query:

• daterange( date ~~ date )

date:

• A date in the format 'yyyy-MM-dd'. For example: 2019-09-16

parenthesized-query:

• ( non-regex-query )

not-query:

• ! unary-query
• NOT unary-query

binary-query:

• and-query
• or-query

and-query:

• non-regex-query & unary-query
• non-regex-query AND unary-query

or-query:

• non-regex-query | unary-query
• non-regex-query || unary-query
• non-regex-query OR unary-query

escape-sequence: (since v.19.2)

• \N
  where N is one of
  ( ) : " & | ! ^ ~ * ? \
  or
  s (for space character)
• \uhhhh
  where h is hexadecimal digit (for any Unicode character)

You may easily run the code from documentation articles and see the features in action in our GitHub examples:

• GroupDocs.Search for .NET examples

• GroupDocs.Search for Java examples

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