Vol. I · A Postgres HandbookTwelve chapters · · 756 queries

The Query & the Schema

A reading-room reference for writing PostgreSQL by hand — selects to window functions, with the schema in plain view.

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Chapters · Basic SELECT · Query 027 / 136
EasyBasic SELECT

Show all products with their category id sorted by price

The query

SQL
SELECT product_id, name, cat_id, price, stock
FROM products
ORDER BY price ASC;
Tested against PostgreSQL 16

Note

“ASC is default but explicit is always better for code readability.

Tables referenced

  • products6 cols

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Show all employees sorted by hire date newest first

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Count distinct departments in employees table

The Query & the Schema

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Compiled for Postgres 16 · MMXXVI