PostgreSQL 18 will improve EXPLAIN output by showing fractional row counts with two decimal digits for better query plan accuracy.
How to use DuckDB's COLUMNS expression to automatically rename fields when using SELECT * across joined tables, avoiding ambiguous column names.
Explores Apache Iceberg's advanced partitioning features, including hidden partitioning and transformations, for optimizing query performance in data lakes.
Introduces BigQuery's new GROUP BY ALL syntax, which automatically infers grouping keys from SELECT items to simplify complex SQL queries.
Explains a performance optimization technique for checking multiple row existence in SQL using LIMIT clauses, with benchmarks across RDBMS.
Compares partitioning techniques in Apache Hive and Apache Iceberg, highlighting Iceberg's advantages for query performance and data management.
Explains how jOOQ 3.19's implicit joins can automatically eliminate unnecessary table joins from SQL queries, improving performance.
jOOQ 3.19 introduces new explicit and implicit to-many path joins, simplifying SQL query syntax and improving readability and correctness.
Explains a common MySQL UPDATE error and provides a workaround using a derived table or jOOQ to bypass the restriction.
A technical deep dive into intercepting and walking PostgreSQL query execution plans to reconstruct SQL and enable custom evaluation.
Explains how PostgreSQL BRIN indexes can degrade performance despite high correlation and introduces the multi-minmax feature as a solution.
Explains the performance and readability benefits of ordering LINQ queries as Where.Select instead of Select.Where in C#.
A tutorial on writing derived tables in jOOQ, explaining syntax, type safety considerations, and questioning if a derived table is always necessary.
Analyzes the performance difference between SQL's FILTER clause and CASE expressions in aggregate functions, using PostgreSQL benchmarks.
A guide to emulating window functions in MySQL 5.7 using local variables, highlighting the limitations and risks of this approach.
Explains how to use the SQL LATERAL keyword to create local column variables and simplify complex queries, improving readability.
A technical guide explaining how to use the $sort stage in MongoDB's aggregation pipeline, covering single/multi-field sorting, case sensitivity, and memory limits.
Discusses why SQL's SELECT..FROM syntax order isn't a flaw to be 'fixed' by FROM..SELECT, comparing it to logical execution order and language design.
Explores efficient database strategies for fetching large view counts on social platforms, avoiding costly SELECT COUNT(*) operations.
Explains performance issues with OFFSET in database pagination and introduces keyset pagination as a more efficient alternative.
