Sign In
Contact Us

Dgraph DQL Tour

Var Blocks

Value variables: math functions

As well as min, max, avg, and sum to aggregate, Dgraph supports a host of functions that can be applied to value variables. These need to be enclosed in math(...) and stored in a variable.

The full list is:

Operator Accepted Type Notes
+ - * / % int and float
min max All types except geo and bool
< > <= >= == != All, except geo and bool boolean result
floor ceil ln exp sqrt int and float
since date number of seconds (float) from the time specified
pow(a, b) int and float a^b
logbase(a,b) int and float log(a) to the base b
cond(a, b, c) a must be a boolean selects b if a is true else c

Note that these are functions on values, not functions to aggregate value maps. The results of these functions are value variables and can be aggregated.

Dgraph DQL Tour

An interactive tutorial with real queries and real results, designed to run on Chrome on your machine.

Modules

. GraphQL Introduction . GraphQL Basic Features . GraphQL Schema . GraphQL Search . GraphQL Data and More Data . DQL Introduction . DQL Basic Features . DQL Schema . DQL Data and More Data . DQL Query Blocks and Variables . DQL Search

DQL Query Blocks and Variables

This module shows you how to build more powerful queries with multiple query blocks and query variables.

Module Breakdown

5.1. Multiple Named Query Blocks 5.2. Query Variables 5.3. Query Variables in a child block 5.4. Query Variables in another query block I 5.5. Query Variables in another query block II 5.6. Exercise: Query Variables linking queries 5.7. Value variables - min and max 5.8. Exercise : Value variables - sum and avg 5.9. Value variables: filtering and ordering 5.10. Value variables: math functions 5.11. Exercise : Latest Movies 5.12. GroupBy 5.13. Congratulations!
Endpoint: /query
Dgraph: http://localhost:8080
Reset Run
Response

5.10 Value variables: math functions