Aggregate
Short Description
The Aggregate node produces a single output based on multiple input values
Detailed Description​
The Aggregate step produces a single value from multiple input values. Aggregate functions include COUNT, SUM, AVG, MAX and MIN. These are typically seen in GROUP BY, UNION and DISTINCT queries.
Additional Links​
- PostgreSQL Documentation - Using Explain
- pgAnalyze - Explain
- eTutorials - Understanding How PostgreSQL Executes a Query
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