PostgreSQL - Views and Materialized Views
You created a materialized view but notice it shows outdated data after the underlying table changes. What is the best way to fix this?
You created a materialized view but notice it shows outdated data after the underlying table changes. What is the best way to fix this?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Identify how to update materialized view data
Materialized views do not auto-update; REFRESH MATERIALIZED VIEW command updates stored data.Step 2: Evaluate other options
Dropping and recreating the materialized view every time is inefficient, using SELECT * FROM materialized_view does not refresh it, restarting the PostgreSQL server is unrelated.Final Answer:
Run REFRESH MATERIALIZED VIEW to update the data. -> Option DQuick Check:
Use REFRESH MATERIALIZED VIEW to update data [OK]
Quick Trick: Use REFRESH MATERIALIZED VIEW to update stored data [OK]
Common Mistakes:
- Expecting SELECT to refresh data automatically
- Dropping and recreating instead of refreshing
- Restarting server to fix view data
Master "Views and Materialized Views" in PostgreSQL
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