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Administration & Performance
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PostgreSQL Complete Course / Administration & Performance

pg_stat_activity

Learn pg_stat_activity in PostgreSQL through the exact construct, a dedicated example, a boundary case, and a mastery check.

12 min read • Advanced

pg_stat_activity is an atomic PostgreSQL lesson inside Administration & Performance. The example uses the specific syntax, command, API, instruction, or language rule named by this lesson.

Study the construct itself, then change one relevant input and predict the result before running it. That keeps this lesson focused on pg_stat_activity rather than on generic PostgreSQL syntax.

Topic-specific example

postgresql-08-06.sql
sql Try It Live 
SELECT pid,usename,state,query FROM pg_stat_activity WHERE state<>'idle';
Edge case / engineering note

Test pg_stat_activity with an empty result, NULL/missing value, duplicate key, or concurrent operation where relevant; database behavior should be verified at the boundary shown by this example.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

pg_stat_activity Mastery Check →
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