SQLDISTINCTtutorial

What is DISTINCT in SQL? Unique values for beginners

DISTINCT means "remove duplicates". Plain words: unique values of a column or combination of columns, the difference from GROUP BY, NULL handling, and the PostgreSQL-specific DISTINCT ON for "one row per group". With before/after tables and common pitfalls.

2026. g. 8. maijs1 min lasīšanaSQL · DISTINCT · tutorial

DISTINCT is the command for "don't return duplicate rows". The simplest way to get unique values of a column or combination of columns.

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