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developer-roadmap/roadmaps/sql/content/count@9aHYrOQDkA84tlxcVK5aD.md
Arik Chakma 274082fd77 feat: clean roadmap content and sync scripts (#10181)
* refactor: clean to roadmap content

* refactor: move shared helpers into scripts/lib
2026-07-28 05:45:17 +06:00

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COUNT

COUNT is an SQL aggregate function that returns the number of rows that match the specified criteria. It can be used to count all rows in a table, non-null values in a specific column, or rows that meet certain conditions when combined with a WHERE clause. COUNT is often used in data analysis, reporting, and performance optimization queries to determine the size of datasets or the frequency of particular values.

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