Passing Sorting Criteria to Custom DQL

MichelDiz · September 14, 2022, 5:08pm

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Predicate name support in DQL variables

opened 05:44AM - 17 Jan 18 UTC

kind/feature status/accepted area/querylang/vars

Given I have a node: ``` <_:1> <type:emailAccount> "" . <_:1> <name> "test@…example.com" . ``` I want to be able to retrieve the `uid` given the `name` and `has(<type:emailAccount>)`. I am trying to build the query using `QueryWithVars` and the golang api. The query works with a hardcoded `$type` variable. ```go variables := map[string]string{ "$name": Name, // "$type": Type, } q := ` query uid($name: string) { uid(func:eq(name, $name)) @filter(has(<type:emailAccount>)) { uid } } ` resp, err := txn.QueryWithVars(ctx, q, variables) if err != nil { return "", err } ``` If i try to use `$type` as variable, returns the error: `rpc error: code = Unknown desc = Got empty attr for function: [has]`. ``` q := ` query uid($name: string) { uid(func:eq(name, $name)) @filter(has($type)) { uid } } ` ``` What should be the query in order to work using `$type` to call `has($type)`? Thanks

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Passing Sorting Criteria to Custom DQL

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