vacuumdb: add page

pages/common/vacuumdb.md

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+# vacuumdb
+
+> Garbage-collect and analyze a PostgreSQL database.
+> More information: <https://www.postgresql.org/docs/current/app-vacuumdb.html>.
+
+- Vacuum a specific database:
+
+`vacuumdb {{database_name}}`
+
+- Vacuum all databases:
+
+`vacuumdb {{[-a|--all]}}`
+
+- Vacuum a specific table in a database:
+
+`vacuumdb {{[-t|--table]}} {{table_name}} {{database_name}}`
+
+- Vacuum and update statistics for the query planner:
+
+`vacuumdb {{[-z|--analyze]}} {{database_name}}`
+
+- Perform a full vacuum (more aggressive, locks tables, rewrites the whole table):
+
+`vacuumdb {{[-f|--full]}} {{database_name}}`
+
+- Vacuum with verbose output:
+
+`vacuumdb {{[-v|--verbose]}} {{database_name}}`
+
+- Vacuum a database using multiple parallel jobs:
+
+`vacuumdb --jobs {{number_of_jobs}} {{database_name}}`