Search Language Queries

TD employs Lucene query for querying alert data. The purpose of Lucene is to provide software developers with an easy-to-use toolkit, facilitating the implementation of full-text search capabilities within target systems or to use this foundation to build a complete full-text search engine.

Key Matching

You can specify fields to search in the query syntax:

where the status field contains active
```
status:active
```
where the title field contains quick or brown
```
title:(quick OR brown)
```
where the author field contains the exact phrase John Smith
```
author:"John Smith"
```
where the first name field contains Alice (note how we need to escape the space with a backslash)
```
first\ name:Alice
```
where any of the fields book.title, book.content, or book.date contains quick or brown (note how we need to escape the * with a backslash):
```
book.\*:(quick OR brown)
```
Search for "foo bar" in the title field and "quick fox" in the body field.
```
title:"foo bar" AND body:"quick fox"
```
Search for either the phrase "foo bar" in the title field AND the phrase "quick fox" in the body field or the word "fox" in the title field.
```
(title:"foo bar" AND body:"quick fox") OR title:fox
```
Search for the word "foo" and not "bar" in the title field
```
title:foo -title:bar
```
where the field title has any non-null value:
```
_exists_:title
```

Wildcard Matching

Search for any word that starts with "foo" in the title field.
```
title:foo*
```
Search for any word that starts with "foo" and ends with "bar" in the title field.
```
title:foo*bar
```
Note that Lucene doesn't support using a * symbol as the first character of a search.

Search Language Queries​

Key Matching​

Wildcard Matching​

Recommend Reading​

Search Language Queries

Key Matching

Wildcard Matching

Recommend Reading