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Versioning data in Postgres? Testing a Git like approach
KQBD Vip - trực tiếp kết quả bóng đá hôm nay cập nhật trực tuyến theo Nano giây, kết quả đêm qua & rạng sáng nay từ 2.000+ giải đấu toàn thế giới.
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SQL reserved words – An empirical list
These words cause problems as table or column name
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CTEs as lookup tables
How to use a CTE instead of complicated CASE expressions
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Exploratory data analysis for humanities data
The course was very much an experiment, an attempt to combine literary study with computing. The 17 surviving students were largely sophomores. About two thirds of them were hard-core humanities majors; the rest were potential or actual CS majors or other STEM concentrators. The class met once a week for three hours…
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AcousticBrainz: Making a hard decision to end the project (2022)
We created AcousticBrainz 7 years ago and started to collect data with the goal of using that data down the road once we had collected enough. We finally got around to doing this recenty, and realised that the data simply isn’t of high enough quality to be useful for much at all.
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Git and Jupyter Notebooks Guide
We show you best practices, workflows, and tools to solve all Jupyter Notebooks <--> Git challenges.
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Ban 1+N in Django
I always thought of 1+N as a thing that you just keep in your head, catch on code reviews or via performance regressions. This worked well for a long …
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Teach your LLM to answer with facts, not fiction
Learn how to train LLM for accurate answers with VectorSQL which allows you to execute finely-grained vector searches to target and retrieve the required information
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Nile: Serverless Postgres for modern SaaS
I am thrilled to announce Nile, a serverless Postgres database designed for modern SaaS applications.
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The Inner Workings of Distributed Databases
Comparison of replication options of time-series databases.
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DuckDB 0.9
The DuckDB team is happy to announce the latest DuckDB release (0.9.0). This release is named Undulata after the Yellow-billed duck native to Africa. To install the new version, please visit the installation guide. The full release notes can be found on GitHub. There have been too many changes to discuss them each in…
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SQLite 3.43
A complete list of SQLite releases in a single page and a chronology are both also available. A detailed history of every check-in is available at SQLite version control site .
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A baffling scale transform on a chart of university course selection trends
Harvard Magazine printed the following chart that confirms a trend in undergraduate majors that we all know about: students are favoring STEM majors at the expense of humanities.
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PostgreSQL 14 Internals
I’m excited to announce that the translation of the “ PostgreSQL 14 Internals ” book is finally complete thanks to the amazing work of Liudmila Mantrova. The final part of the book considers each of the index types in great detail. It explains and demonstrates how access methods, operator classes, and data types work…
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Rules of schema growth (2017)
The free database designed for immutable values and a time-aware information model.
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A Relational Spreadsheet
I tried doing an INNER JOIN in Google Sheets and it was so awkward I was compelled to build my own lightweight relational spreadsheet / language / system.
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How to Read MySQL EXPLAINs
Learn how to read the output in MySQL EXPLAIN plans so you can utilize them to improve query performance.
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SQLite Begin Concurrent
Usually, SQLite allows at most one writer to proceed concurrently. The BEGIN CONCURRENT enhancement allows multiple writers to process write transactions simultanously if the database is in "wal" or "wal2" mode, although the system still serializes COMMIT commands.
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Waiting for Postgres 16: Cumulative I/O statistics with pg_stat_io
We talk about querying system wide I/O statistics in Postgres, show several use cases for pg_stat_io, and talk about the future of I/O observability in Postgres.
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Building a Streaming Platform in Go for Postgres
At PeerDB, our mission is to create a Postgres-first data-movement platform that makes it fast and simple to stream data from Postgres to Data Warehouses…
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The Dutch benefits scandal: a cautionary tale for algorithmic enforcement
On January 15, the Dutch government was forced to resign amidst a scandal around its child-care benefits scheme. Systems that were meant to detect misuse of the benefits scheme, mistakenly labelled over 20,000 parents as fraudsters. More crucially, a disproportionate amount of those labelled as fraudsters had an…
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Quicker serverless Postgres connections
Neon’s serverless driver redirects the PostgreSQL TCP wire protocol over WebSockets. This makes ordinary, fully-functional PostgreSQL connections accessible from new environments — including serverless platforms like Cloudflare Workers and Vercel Edge Functions. A key feature of these environments is that state is not…