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39 lines
1.9 KiB
Plaintext
39 lines
1.9 KiB
Plaintext
CREATE EXTENSION pgstattuple;
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--
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-- It's difficult to come up with platform-independent test cases for
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-- the pgstattuple functions, but the results for empty tables and
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-- indexes should be that.
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--
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create table test (a int primary key);
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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "test_pkey" for table "test"
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select * from pgstattuple('test'::text);
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table_len | tuple_count | tuple_len | tuple_percent | dead_tuple_count | dead_tuple_len | dead_tuple_percent | free_space | free_percent
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-----------+-------------+-----------+---------------+------------------+----------------+--------------------+------------+--------------
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0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
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(1 row)
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select * from pgstattuple('test'::regclass);
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table_len | tuple_count | tuple_len | tuple_percent | dead_tuple_count | dead_tuple_len | dead_tuple_percent | free_space | free_percent
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-----------+-------------+-----------+---------------+------------------+----------------+--------------------+------------+--------------
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0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
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(1 row)
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select * from pgstatindex('test_pkey');
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version | tree_level | index_size | root_block_no | internal_pages | leaf_pages | empty_pages | deleted_pages | avg_leaf_density | leaf_fragmentation
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---------+------------+------------+---------------+----------------+------------+-------------+---------------+------------------+--------------------
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2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | NaN | NaN
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(1 row)
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select pg_relpages('test');
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pg_relpages
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-------------
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0
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(1 row)
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select pg_relpages('test_pkey');
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pg_relpages
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-------------
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1
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(1 row)
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