https://dailypypy.org/tags/time-series/ Recent content in Time Series on 每日拍拍 Hugo -- gohugo.io zh-tw © 2026 每日拍拍 Wed, 23 Sep 2026 12:39:00 +0800 155076163427069952 154825760438254592 https://dailypypy.org/learn/duckdb-asof-joins-time-series/ Wed, 23 Sep 2026 12:39:00 +0800 https://dailypypy.org/learn/duckdb-asof-joins-time-series/ <!--- 1440x768 prompt: masterpiece, best quality, highres, clean anime illustration, japanese anime style, soft shading, flat color design, 1girl, black hair, green eyes, white off-shoulder shirt, black short skirt, three-quarter view, cowboy shot, arms gently crossed, serious focused look, looking at viewer, pastel lemon and seafoam background, two parallel curved light trails with plain round glowing nodes, abstract temporal alignment motif without clocks, symbols, logos, markings, numbers, letters, or text, neat composition, detailed eyes, cute and smart vibe, minimal background, polished illustration, no text negative prompt: worst quality, bad eye, bad hand, extra limbs, manga, multiple views, monochrome, text, signature dedup note: Planned 2026-09-23 topic `duckdb-asof-joins-time-series` passed a strict 170-post inventory and current-source scan. ../python-duckdb/ teaches general CSV/Parquet querying and Python integration; ../duckdb-window-functions/ teaches ranking, LAG/LEAD, analytical frames, and QUALIFY; the Streamlit/Textual DuckDB posts build UI workflows; ../duckdb-remote-parquet-s3/ focuses on remote scans and pushdown. This follow-up instead teaches nearest-time matching with ASOF JOIN: inequality direction, partition keys, tolerance, unmatched rows, deterministic right-side deduplication, and temporal QA. It cross-links the adjacent DuckDB articles without repeating ingestion, dashboards, or analytical-window sections. source check: Reviewed against the current official DuckDB FROM/JOIN, ASOF Join, timestamp/interval, Python DB-API, and EXPLAIN documentation on 2026-09-23. The article targets DuckDB 1.5.5 and keeps the single ASOF inequality separate from the post-match tolerance policy. ---> <p> <figure> <img class="my-0 rounded-md" loading="lazy" alt="featured" src="./featured.png" /> </figure> </p>