diff options
Diffstat (limited to 'examples/gradient.sql')
| -rw-r--r-- | examples/gradient.sql | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/examples/gradient.sql b/examples/gradient.sql index 9aa9010..f04cdad 100644 --- a/examples/gradient.sql +++ b/examples/gradient.sql @@ -1,12 +1,12 @@ +DELETE FROM images WHERE id = 'gradient'; INSERT INTO images (id, width, height) VALUES ('gradient', 200, 200) RETURNING id; WITH RECURSIVE - width AS (SELECT width FROM images WHERE id = 'gradient'), - height AS (SELECT height FROM images WHERE id = 'gradient'), + image AS (SELECT * FROM images WHERE id = 'gradient'), horizontal(x) AS - (SELECT * FROM width UNION ALL SELECT x - 1 FROM horizontal WHERE x > 1), + (SELECT width FROM image UNION ALL SELECT x - 1 FROM horizontal WHERE x > 1), vertical(y) AS - (SELECT * FROM height UNION ALL SELECT y - 1 FROM vertical WHERE y > 1), + (SELECT height FROM image UNION ALL SELECT y - 1 FROM vertical WHERE y > 1), _pixels(x, y, r, g, b) AS (SELECT x, y, mod(x, 255), mod(y, 255), 100 FROM vertical, horizontal) INSERT INTO pixels (image_id, x, y, r, g, b) SELECT 'gradient', x, y, r, g, b FROM _pixels; |