Pipelined Relational Query Language, pronounced “Prequel”

PRQL is a modern language for transforming data — a simple, powerful, pipelined SQL replacement

For example, “Top N by group”:

from employees
group role (
  sort join_date
  take 1
)

WITH table_0 AS (
  SELECT
    *,
    ROW_NUMBER() OVER (
      PARTITION BY role
      ORDER BY
        join_date
    ) AS _expr_0
  FROM
    employees
)
SELECT
  *
FROM
  table_0
WHERE
  _expr_0 <= 1

Explaining The Postgres Meme

One of the best ways to learn something is to explain it, and this blog post aims to do exactly that. Let’s review and explain every part of this meme, while unraveling its meaning and secrets.

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