PostgreSQL INCLUDE indexes: what problem are they trying to solve?
A common way to explain PostgreSQL's INCLUDE clause is that it helps with index-only scans. That's...
Aug 31, 202610 min read12 reactions7 comments
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Jul 7, 2026Index Scan — Access Method
Index Scan không tự nhiên nhanh: heap fetch và random IO mới quyết định Index Scan chỉ là...
Jul 7, 202612 min read0 reactions0 comments
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Jul 7, 2026Composite Index — Multi-column Index
Multi-column index: leftmost prefix quyết định index có được dùng hay không Một index trên...
Jul 7, 202612 min read0 reactions0 comments
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Jul 7, 2026Index Strategy — Workload-driven Design
Workload-driven index: chọn index theo query thật, không theo cảm tính Không có "best...
Jul 7, 202615 min read0 reactions0 comments
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Jul 7, 2026Index Maintenance — Write Overhead
Write overhead của index: vì sao mỗi CREATE INDEX là một thuế đánh lên mọi...
Jul 7, 202613 min read0 reactions0 comments
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Jul 7, 2026B-Tree Index — General Purpose Index
B-Tree là index mặc định của Postgres — và vì sao "index mọi cột" lại giết write...
Jul 7, 202611 min read0 reactions0 comments