@ -228,45 +228,6 @@ SELECT pg_catalog.pg_set_attribute_stats(
avg_width => 2::integer,
n_distinct => 0.3::real);
ERROR: "inherited" cannot be NULL
-- error: null_frac null
SELECT pg_catalog.pg_set_attribute_stats(
relation => 'stats_import.test'::regclass,
attname => 'id'::name,
inherited => false::boolean,
null_frac => NULL::real,
avg_width => 2::integer,
n_distinct => 0.3::real);
pg_set_attribute_stats
------------------------
(1 row)
-- error: avg_width null
SELECT pg_catalog.pg_set_attribute_stats(
relation => 'stats_import.test'::regclass,
attname => 'id'::name,
inherited => false::boolean,
null_frac => 0.1::real,
avg_width => NULL::integer,
n_distinct => 0.3::real);
pg_set_attribute_stats
------------------------
(1 row)
-- error: avg_width null
SELECT pg_catalog.pg_set_attribute_stats(
relation => 'stats_import.test'::regclass,
attname => 'id'::name,
inherited => false::boolean,
null_frac => 0.1::real,
avg_width => 2::integer,
n_distinct => NULL::real);
pg_set_attribute_stats
------------------------
(1 row)
-- ok: no stakinds
SELECT pg_catalog.pg_set_attribute_stats(
relation => 'stats_import.test'::regclass,
@ -655,6 +616,711 @@ SELECT pg_catalog.pg_set_attribute_stats(
);
ERROR: unable to determine element type of attribute "arange"
DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST.
--
-- Clear attribute stats to try again with restore functions
-- (relation stats were already cleared).
--
SELECT
pg_catalog.pg_clear_attribute_stats(
'stats_import.test'::regclass,
s.attname,
s.inherited)
FROM pg_catalog.pg_stats AS s
WHERE s.schemaname = 'stats_import'
AND s.tablename = 'test'
ORDER BY s.attname, s.inherited;
pg_clear_attribute_stats
--------------------------
(3 rows)
-- reject: argument name is NULL
SELECT pg_restore_relation_stats(
'relation', '0'::oid::regclass,
'version', 150000::integer,
NULL, '17'::integer,
'reltuples', 400::real,
'relallvisible', 4::integer);
ERROR: name at variadic position 5 is NULL
-- reject: argument name is an integer
SELECT pg_restore_relation_stats(
'relation', '0'::oid::regclass,
'version', 150000::integer,
17, '17'::integer,
'reltuples', 400::real,
'relallvisible', 4::integer);
ERROR: name at variadic position 5 has type "integer", expected type "text"
-- reject: odd number of variadic arguments cannot be pairs
SELECT pg_restore_relation_stats(
'relation', '0'::oid::regclass,
'version', 150000::integer,
'relpages', '17'::integer,
'reltuples', 400::real,
'relallvisible');
ERROR: variadic arguments must be name/value pairs
HINT: Provide an even number of variadic arguments that can be divided into pairs.
-- reject: object doesn't exist
SELECT pg_restore_relation_stats(
'relation', '0'::oid::regclass,
'version', 150000::integer,
'relpages', '17'::integer,
'reltuples', 400::real,
'relallvisible', 4::integer);
ERROR: could not open relation with OID 0
-- ok: set all stats
SELECT pg_restore_relation_stats(
'relation', 'stats_import.test'::regclass,
'version', 150000::integer,
'relpages', '17'::integer,
'reltuples', 400::real,
'relallvisible', 4::integer);
pg_restore_relation_stats
---------------------------
t
(1 row)
SELECT relpages, reltuples, relallvisible
FROM pg_class
WHERE oid = 'stats_import.test'::regclass;
relpages | reltuples | relallvisible
----------+-----------+---------------
17 | 400 | 4
(1 row)
-- ok: just relpages
SELECT pg_restore_relation_stats(
'relation', 'stats_import.test'::regclass,
'version', 150000::integer,
'relpages', '16'::integer);
pg_restore_relation_stats
---------------------------
t
(1 row)
SELECT relpages, reltuples, relallvisible
FROM pg_class
WHERE oid = 'stats_import.test'::regclass;
relpages | reltuples | relallvisible
----------+-----------+---------------
16 | 400 | 4
(1 row)
-- ok: just reltuples
SELECT pg_restore_relation_stats(
'relation', 'stats_import.test'::regclass,
'version', 150000::integer,
'reltuples', '500'::real);
pg_restore_relation_stats
---------------------------
t
(1 row)
SELECT relpages, reltuples, relallvisible
FROM pg_class
WHERE oid = 'stats_import.test'::regclass;
relpages | reltuples | relallvisible
----------+-----------+---------------
16 | 500 | 4
(1 row)
-- ok: just relallvisible
SELECT pg_restore_relation_stats(
'relation', 'stats_import.test'::regclass,
'version', 150000::integer,
'relallvisible', 5::integer);
pg_restore_relation_stats
---------------------------
t
(1 row)
SELECT relpages, reltuples, relallvisible
FROM pg_class
WHERE oid = 'stats_import.test'::regclass;
relpages | reltuples | relallvisible
----------+-----------+---------------
16 | 500 | 5
(1 row)
-- warn and error: unrecognized argument name
SELECT pg_restore_relation_stats(
'relation', '0'::oid::regclass,
'version', 150000::integer,
'relpages', '17'::integer,
'reltuples', 400::real,
'nope', 4::integer);
WARNING: unrecognized argument name: "nope"
ERROR: could not open relation with OID 0
-- warn: bad relpages type
SELECT pg_restore_relation_stats(
'relation', 'stats_import.test'::regclass,
'version', 150000::integer,
'relpages', 'nope'::text,
'reltuples', 400.0::real,
'relallvisible', 4::integer);
WARNING: argument "relpages" has type "text", expected type "integer"
pg_restore_relation_stats
---------------------------
f
(1 row)
SELECT relpages, reltuples, relallvisible
FROM pg_class
WHERE oid = 'stats_import.test'::regclass;
relpages | reltuples | relallvisible
----------+-----------+---------------
16 | 400 | 4
(1 row)
-- error: object does not exist
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', '0'::oid::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 2::integer,
'n_distinct', 0.3::real);
ERROR: could not open relation with OID 0
-- error: relation null
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', NULL::oid,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 2::integer,
'n_distinct', 0.3::real);
ERROR: "relation" cannot be NULL
-- error: attname null
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', NULL::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 2::integer,
'n_distinct', 0.3::real);
ERROR: "attname" cannot be NULL
-- error: attname doesn't exist
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'nope'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 2::integer,
'n_distinct', 0.3::real);
ERROR: column "nope" of relation "test" does not exist
-- error: inherited null
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', NULL::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 2::integer,
'n_distinct', 0.3::real);
ERROR: "inherited" cannot be NULL
-- ok: no stakinds
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.4::real,
'avg_width', 5::integer,
'n_distinct', 0.6::real);
pg_restore_attribute_stats
----------------------------
t
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.4 | 5 | 0.6 | | | | | | | | | |
(1 row)
-- warn: unrecognized argument name
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.2::real,
'avg_width', NULL::integer,
'nope', 0.5::real);
WARNING: unrecognized argument name: "nope"
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.2 | 5 | 0.6 | | | | | | | | | |
(1 row)
-- warn: mcv / mcf null mismatch part 1
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.6::real,
'avg_width', 7::integer,
'n_distinct', -0.7::real,
'most_common_freqs', '{0.1,0.2,0.3}'::real[]
);
WARNING: "most_common_vals" must be specified when "most_common_freqs" is specified
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.6 | 7 | -0.7 | | | | | | | | | |
(1 row)
-- warn: mcv / mcf null mismatch part 2
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.7::real,
'avg_width', 8::integer,
'n_distinct', -0.8::real,
'most_common_vals', '{1,2,3}'::text
);
WARNING: "most_common_freqs" must be specified when "most_common_vals" is specified
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.7 | 8 | -0.8 | | | | | | | | | |
(1 row)
-- warn: mcv / mcf type mismatch
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.8::real,
'avg_width', 9::integer,
'n_distinct', -0.9::real,
'most_common_vals', '{2,1,3}'::text,
'most_common_freqs', '{0.2,0.1}'::double precision[]
);
WARNING: argument "most_common_freqs" has type "double precision[]", expected type "real[]"
WARNING: "most_common_freqs" must be specified when "most_common_vals" is specified
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.8 | 9 | -0.9 | | | | | | | | | |
(1 row)
-- warn: mcv cast failure
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.9::real,
'avg_width', 10::integer,
'n_distinct', -0.4::real,
'most_common_vals', '{2,four,3}'::text,
'most_common_freqs', '{0.3,0.25,0.05}'::real[]
);
WARNING: invalid input syntax for type integer: "four"
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.9 | 10 | -0.4 | | | | | | | | | |
(1 row)
-- ok: mcv+mcf
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 1::integer,
'n_distinct', -0.1::real,
'most_common_vals', '{2,1,3}'::text,
'most_common_freqs', '{0.3,0.25,0.05}'::real[]
);
pg_restore_attribute_stats
----------------------------
t
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.1 | 1 | -0.1 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | |
(1 row)
-- warn: NULL in histogram array
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.2::real,
'avg_width', 2::integer,
'n_distinct', -0.2::real,
'histogram_bounds', '{1,NULL,3,4}'::text
);
WARNING: "histogram_bounds" array cannot contain NULL values
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.2 | 2 | -0.2 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | |
(1 row)
-- ok: histogram_bounds
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.3::real,
'avg_width', 3::integer,
'n_distinct', -0.3::real,
'histogram_bounds', '{1,2,3,4}'::text );
pg_restore_attribute_stats
----------------------------
t
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.3 | 3 | -0.3 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | |
(1 row)
-- warn: elem_count_histogram null element
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'tags'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.4::real,
'avg_width', 5::integer,
'n_distinct', -0.4::real,
'elem_count_histogram', '{1,1,NULL,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
);
WARNING: "elem_count_histogram" array cannot contain NULL values
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'tags';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | tags | f | 0.4 | 5 | -0.4 | | | | | | | | | |
(1 row)
-- ok: elem_count_histogram
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'tags'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.5::real,
'avg_width', 6::integer,
'n_distinct', -0.55::real,
'elem_count_histogram', '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
);
pg_restore_attribute_stats
----------------------------
t
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'tags';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------+------------------+------------------------
stats_import | test | tags | f | 0.5 | 6 | -0.55 | | | | | | | {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1} | | |
(1 row)
-- range stats on a scalar type
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.6::real,
'avg_width', 7::integer,
'n_distinct', -0.15::real,
'range_empty_frac', 0.5::real,
'range_length_histogram', '{399,499,Infinity}'::text
);
WARNING: attribute "id" is not a range type
DETAIL: Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM.
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.6 | 7 | -0.15 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | |
(1 row)
-- warn: range_empty_frac range_length_hist null mismatch
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'arange'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.7::real,
'avg_width', 8::integer,
'n_distinct', -0.25::real,
'range_length_histogram', '{399,499,Infinity}'::text
);
WARNING: "range_empty_frac" must be specified when "range_length_histogram" is specified
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'arange';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | arange | f | 0.7 | 8 | -0.25 | | | | | | | | | |
(1 row)
-- warn: range_empty_frac range_length_hist null mismatch part 2
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'arange'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.8::real,
'avg_width', 9::integer,
'n_distinct', -0.35::real,
'range_empty_frac', 0.5::real
);
WARNING: "range_length_histogram" must be specified when "range_empty_frac" is specified
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'arange';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | arange | f | 0.8 | 9 | -0.35 | | | | | | | | | |
(1 row)
-- ok: range_empty_frac + range_length_hist
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'arange'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.9::real,
'avg_width', 1::integer,
'n_distinct', -0.19::real,
'range_empty_frac', 0.5::real,
'range_length_histogram', '{399,499,Infinity}'::text
);
pg_restore_attribute_stats
----------------------------
t
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'arange';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | arange | f | 0.9 | 1 | -0.19 | | | | | | | | {399,499,Infinity} | 0.5 |
(1 row)
-- warn: range bounds histogram on scalar
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'id'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.1::real,
'avg_width', 2::integer,
'n_distinct', -0.29::real,
'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
);
WARNING: attribute "id" is not a range type
DETAIL: Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM.
pg_restore_attribute_stats
----------------------------
f
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'id';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
stats_import | test | id | f | 0.1 | 2 | -0.29 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | |
(1 row)
-- ok: range_bounds_histogram
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'arange'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.2::real,
'avg_width', 3::integer,
'n_distinct', -0.39::real,
'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
);
pg_restore_attribute_stats
----------------------------
t
(1 row)
SELECT *
FROM pg_stats
WHERE schemaname = 'stats_import'
AND tablename = 'test'
AND inherited = false
AND attname = 'arange';
schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+--------------------------------------
stats_import | test | arange | f | 0.2 | 3 | -0.39 | | | | | | | | {399,499,Infinity} | 0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"}
(1 row)
-- warn: too many stat kinds
SELECT pg_catalog.pg_restore_attribute_stats(
'relation', 'stats_import.test'::regclass,
'attname', 'arange'::name,
'inherited', false::boolean,
'version', 150000::integer,
'null_frac', 0.5::real,
'avg_width', 2::integer,
'n_distinct', -0.1::real,
'most_common_vals', '{"[2,3)","[1,3)","[3,9)"}'::text,
'most_common_freqs', '{0.3,0.25,0.05}'::real[],
'histogram_bounds', '{"[1,2)","[2,3)","[3,4)","[4,)"}'::text,
'correlation', 1.1::real,
'most_common_elems', '{3,1}'::text,
'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[],
'range_empty_frac', -0.5::real,
'range_length_histogram', '{399,499,Infinity}'::text,
'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text);
WARNING: unable to determine element type of attribute "arange"
DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST.
pg_restore_attribute_stats
----------------------------
f
(1 row)
--
-- Test the ability to exactly copy data from one table to an identical table,
-- correctly reconstructing the stakind order as well as the staopN and
@ -848,6 +1514,217 @@ WHERE s.starelid = 'stats_import.is_odd'::regclass;
---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
(0 rows)
--
SELECT relpages, reltuples, relallvisible
FROM pg_class
WHERE oid = 'stats_import.test'::regclass;
relpages | reltuples | relallvisible
----------+-----------+---------------
1 | 4 | 0
(1 row)
--
-- Clear clone stats to try again with pg_restore_attribute_stats
--
SELECT
pg_catalog.pg_clear_attribute_stats(
('stats_import.' || s.tablename)::regclass,
s.attname,
s.inherited)
FROM pg_catalog.pg_stats AS s
WHERE s.schemaname = 'stats_import'
AND s.tablename IN ('test_clone', 'is_odd_clone')
ORDER BY s.tablename, s.attname, s.inherited;
pg_clear_attribute_stats
--------------------------
(6 rows)
SELECT
SELECT COUNT(*)
FROM pg_catalog.pg_stats AS s
WHERE s.schemaname = 'stats_import'
AND s.tablename IN ('test_clone', 'is_odd_clone');
ERROR: syntax error at or near "SELECT"
LINE 2: SELECT COUNT(*)
^
--
-- Copy stats from test to test_clone, and is_odd to is_odd_clone
--
SELECT s.schemaname, s.tablename, s.attname, s.inherited, r.*
FROM pg_catalog.pg_stats AS s
CROSS JOIN LATERAL
pg_catalog.pg_restore_attribute_stats(
'relation', ('stats_import.' || s.tablename || '_clone')::regclass,
'attname', s.attname,
'inherited', s.inherited,
'version', 150000,
'null_frac', s.null_frac,
'avg_width', s.avg_width,
'n_distinct', s.n_distinct,
'most_common_vals', s.most_common_vals::text,
'most_common_freqs', s.most_common_freqs,
'histogram_bounds', s.histogram_bounds::text,
'correlation', s.correlation,
'most_common_elems', s.most_common_elems::text,
'most_common_elem_freqs', s.most_common_elem_freqs,
'elem_count_histogram', s.elem_count_histogram,
'range_bounds_histogram', s.range_bounds_histogram::text,
'range_empty_frac', s.range_empty_frac,
'range_length_histogram', s.range_length_histogram::text) AS r
WHERE s.schemaname = 'stats_import'
AND s.tablename IN ('test', 'is_odd')
ORDER BY s.tablename, s.attname, s.inherited;
schemaname | tablename | attname | inherited | r
--------------+-----------+---------+-----------+---
stats_import | is_odd | expr | f | t
stats_import | test | arange | f | t
stats_import | test | comp | f | t
stats_import | test | id | f | t
stats_import | test | name | f | t
stats_import | test | tags | f | t
(6 rows)
SELECT c.relname, COUNT(*) AS num_stats
FROM pg_class AS c
JOIN pg_statistic s ON s.starelid = c.oid
WHERE c.relnamespace = 'stats_import'::regnamespace
AND c.relname IN ('test', 'test_clone', 'is_odd', 'is_odd_clone')
GROUP BY c.relname
ORDER BY c.relname;
relname | num_stats
--------------+-----------
is_odd | 1
is_odd_clone | 1
test | 5
test_clone | 5
(4 rows)
-- check test minus test_clone
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'test' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.test'::regclass
EXCEPT
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'test' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.test_clone'::regclass;
attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
(0 rows)
-- check test_clone minus test
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'test_clone' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.test_clone'::regclass
EXCEPT
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'test_clone' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.test'::regclass;
attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
(0 rows)
-- check is_odd minus is_odd_clone
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'is_odd' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.is_odd'::regclass
EXCEPT
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'is_odd' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.is_odd_clone'::regclass;
attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
(0 rows)
-- check is_odd_clone minus is_odd
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'is_odd_clone' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.is_odd_clone'::regclass
EXCEPT
SELECT
a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
s.stavalues5::text AS sv5, 'is_odd_clone' AS direction
FROM pg_statistic s
JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
WHERE s.starelid = 'stats_import.is_odd'::regclass;
attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
(0 rows)
DROP SCHEMA stats_import CASCADE;
NOTICE: drop cascades to 6 other objects
DETAIL: drop cascades to type stats_import.complex_type
Jeff Davis
1 year ago