Paweł Domański
37 lines
1.3 KiB
SQL
37 lines
1.3 KiB
SQL
-- Analyze stats for a table testanalyze(schema is public)
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dbaclass=# analyze testanalyze;
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ANALYZE
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-- For analyzing selected columns for emptab table ( schema is dbatest)
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dbaclass=# analyze dbatest.emptab (datname,datdba);
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ANALYZE
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dbaclass=# select relname,reltuples from pg_class where relname in ('testanalyze','emptab');
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relname | reltuples
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-------------+-----------
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testanalyze | 4
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emptab | 4
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(2 rows)
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dbaclass=# select schemaname,relname,analyze_count,last_analyze,last_autoanalyze from pg_stat_user_tables where relname in ('testanalyze','emptab');
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schemaname | relname | analyze_count | last_analyze | last_autoanalyze
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------------+-------------+---------------+----------------------------------+------------------
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public | testanalyze | 1 | 2020-07-21 17:00:49.687053+05:30 |
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dbatest | emptab | 1 | 2020-07-21 17:10:01.111517+05:30 |
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(2 rows)
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---Analyze command with verbose command
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dbaclass=# analyze verbose dbatest.emptab (datname,datdba);
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INFO: analyzing "dbatest.emptab"
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INFO: "emptab": scanned 1 of 1 pages, containing 4 live rows and 0 dead rows; 4 rows in sample, 4 estimated total rows
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ANALYZE
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---Analyze tables in the current schema that the user has access to.
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dbaclass=# analyze ; |