columns:
  - column: "Window Function"
  - column: "Idiomatic Materialize"

rows:
  - Window Function: |
      [First value within groups](/transform-data/idiomatic-materialize-sql/first-value/)
    Idiomatic Materialize: |
      [Use `MIN/MAX ... GROUP BY` subquery](/transform-data/idiomatic-materialize-sql/first-value/).

  - Window Function: |
      [Lag over a regularly increasing field](/transform-data/idiomatic-materialize-sql/lag/)
    Idiomatic Materialize: |
      [Use self join or a self `LEFT JOIN/LEFT OUTER JOIN` by an **equality match** on the regularly increasing field](/transform-data/idiomatic-materialize-sql/lag/).

  - Window Function: |
      [Last value within groups](/transform-data/idiomatic-materialize-sql/last-value/)
    Idiomatic Materialize: |
      [Use `MIN/MAX ... GROUP BY` subquery](/transform-data/idiomatic-materialize-sql/last-value/)

  - Window Function: |
      [Lead over a regularly increasing field](/transform-data/idiomatic-materialize-sql/lead/)
    Idiomatic Materialize: |
      [Use self join or a self `LEFT JOIN/LEFT OUTER JOIN` by an **equality match** on the regularly increasing field](/transform-data/idiomatic-materialize-sql/lead/).

  - Window Function: |
      [Top-K](/transform-data/idiomatic-materialize-sql/top-k/)
    Idiomatic Materialize: |
      [Use an `ORDER BY ... LIMIT` subquery with a `LATERAL JOIN` on a `DISTINCT` subquery (or, for K=1,  a `SELECT DISTINCT ON ... ORDER BY ... LIMIT` query)](/transform-data/idiomatic-materialize-sql/top-k/)