- Retrieve Concept Types and Their Instances
- Get the Variables
- Limit the Answers
- Sort the Answers
- Offset the Answers
- Clients Guide
Retrieve Concept Types and Their Instances
get query triggers a search in the knowledge graph based on what has been described in the preceding
match clause. To try the following examples with one of the TypeDB clients, follows these Clients Guide.
Get the Variables
Any variable that has been specified in the
match clause can be returned as the answers of the
get query. Let’s look at an example of how variables can be asked for in the answer.
get clause is omitted, all variables specified in the
match clause are returned.
Limit the Answers
We can chose to limit the number of answers in the results. To do this, we use the
limit keyword followed by the desired number of answers.
This query returns only one single (and random) instance of type
Sort the Answers
To sort the answers by a particular variable, we use the
sort keyword followed by the variable by which we would like the results to be sorted. A second argument,
asc (ascending) or
desc (descending), determines the sorting method.
This query returns all instances of the
person (entity) type sorted by their
Offset the Answers
Often used in conjunction with
limit, we use the
offset keyword followed by the number we would like the answers to be offset by. This is commonly used to return a desired range of the answers.
This returns 10 instances of the
person (entity) type starting from the 6th person sorted by their
get query is used to extract information out of the knowledge graph by describing the desired result in the preceding
match clause. We use the modifiers
offset to retrieve an optionally sorted subset of the matched instances.
Next, we learn how to insert data into a TypeDB knowledge graph.