Cast Operation

HoneyEQL supports type cast operation using the :cast parameter. This parameter takes the value similar to HoneySQL's a cast parameter except that instead of column name, we'll be using the attribute ident.

; :eql.mode/lenient syntax
(heql/query-single pg-adapter [{[:actor/actor-id 1]
                                [[:cast :actor/actor-id :text]]}])
; :eql.mode/strict syntax
(heql/query-single pg-adapter `[{([:actor/actor-id 1])
                                  [[:cast :actor/actor-id :text]]}])

It returns

{:actor/cast-of-actor-id "1"}

The cast operation often used along with an alias, which we would results a better output.

; :eql.mode/lenient syntax
(heql/query-single pg-adapter [{[:actor/actor-id 1]
                                [[[:cast :actor/actor-id :text] :as :actor/id-as-string]]}])
; :eql.mode/strict syntax
(heql/query-single pg-adapter `[{([:actor/actor-id 1])
                                  [[[:cast :actor/actor-id :text] :as :actor/id-as-string]]}])

It now returns

{:actor/id-as-string "1"}