Strapi GROUP BY and COUNT fields with the same value - api

Question

Is there any way in strapi to group by entries with the same fields and count its total?
Trying to create a Poll App which has "Response" Collection containing an "Answer" Field (enum: a, b, c, d). Would like to group responses with the same answers. Something like this:
{
"answer": "a",
"total": 3
}, {
"answer": "b",
"total": 1
}
Is it possible out of the box?
To give more context, here's its sql counterpart:
select *, count(answers) from responses group by answers

Answer 1

there is no known default way for groupby with entity service, however there is count query:
/src/answer/controllers/answer.js
const { createCoreController } = require("#strapi/strapi").factories;
module.exports = createCoreController("api::answer.answer", ({ strapi }) => ({
async find(ctx) {
let { query } = ctx;
let answers = await strapi.db.query("api::answer.answer").findMany({
...query,
});
answers = await Promise.all(answers.map(async (answer) => ({
...answer,
total: await strapi.db.query("api::answer.answer").count({where: '...'})
})))
return answers
},
}));
or you can use raw query like this:
let { rows } = await strapi.db.connection.raw(
`select id from posts where published_at IS NOT null order by random() limit ${count};
`);
or
let { rows } = await strapi.db.connection.raw(
`select *, count(answers) from responses group by answers;`);