mirror of
https://github.com/postgres/postgres.git
synced 2025-12-14 00:04:34 -05:00
Improve test output of extended statistics for ndistinct and dependencies
Corey Huinker has come up with a recipe that is more compact and more pleasant to the eye for extended stats because we know that all of them are 1-dimension JSON arrays. This commit switches the extended stats tests to use replace() instead of jsonb_pretty(), splitting the data so as one line is used for each item in the extended stats object. This results in the removal of a good chunk of test output, that is now easier to debug with one line used for each item in a stats object. This patch has not been provided by Corey. This is some post-commit cleanup work that I have noticed as good enough to do on its own while reviewing the rest of the patch set Corey has posted. Discussion: https://postgr.es/m/CADkLM=csMd52i39Ye8-PUUHyzBb3546eSCUTh-FBQ7bzT2uZ4Q@mail.gmail.com
This commit is contained in:
Michael Paquier
parent
5db6a344ab
commit
2f04110225
@ -196,8 +196,10 @@ Statistics objects:
|
|||||||
"public.ab1_a_b_stats" ON a, b FROM ab1; STATISTICS 0
|
"public.ab1_a_b_stats" ON a, b FROM ab1; STATISTICS 0
|
||||||
|
|
||||||
ANALYZE ab1;
|
ANALYZE ab1;
|
||||||
SELECT stxname, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct,
|
SELECT stxname,
|
||||||
jsonb_pretty(d.stxddependencies::text::jsonb) AS stxddependencies, stxdmcv, stxdinherit
|
replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct,
|
||||||
|
replace(d.stxddependencies, '}, ', E'},\n') AS stxddependencies,
|
||||||
|
stxdmcv, stxdinherit
|
||||||
FROM pg_statistic_ext s LEFT JOIN pg_statistic_ext_data d ON (d.stxoid = s.oid)
|
FROM pg_statistic_ext s LEFT JOIN pg_statistic_ext_data d ON (d.stxoid = s.oid)
|
||||||
WHERE s.stxname = 'ab1_a_b_stats';
|
WHERE s.stxname = 'ab1_a_b_stats';
|
||||||
stxname | stxdndistinct | stxddependencies | stxdmcv | stxdinherit
|
stxname | stxdndistinct | stxddependencies | stxdmcv | stxdinherit
|
||||||
@ -477,43 +479,16 @@ SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, (
|
|||||||
-- correct command
|
-- correct command
|
||||||
CREATE STATISTICS s10 ON a, b, c FROM ndistinct;
|
CREATE STATISTICS s10 ON a, b, c FROM ndistinct;
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
stxkind | stxdndistinct
|
stxkind | stxdndistinct
|
||||||
---------+--------------------------
|
---------+---------------------------------------------
|
||||||
{d,f,m} | [ +
|
{d,f,m} | [{"attributes": [3, 4], "ndistinct": 11}, +
|
||||||
| { +
|
| {"attributes": [3, 6], "ndistinct": 11}, +
|
||||||
| "ndistinct": 11,+
|
| {"attributes": [4, 6], "ndistinct": 11}, +
|
||||||
| "attributes": [ +
|
| {"attributes": [3, 4, 6], "ndistinct": 11}]
|
||||||
| 3, +
|
|
||||||
| 4 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 11,+
|
|
||||||
| "attributes": [ +
|
|
||||||
| 3, +
|
|
||||||
| 6 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 11,+
|
|
||||||
| "attributes": [ +
|
|
||||||
| 4, +
|
|
||||||
| 6 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 11,+
|
|
||||||
| "attributes": [ +
|
|
||||||
| 3, +
|
|
||||||
| 4, +
|
|
||||||
| 6 +
|
|
||||||
| ] +
|
|
||||||
| } +
|
|
||||||
| ]
|
|
||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
-- minor improvement, make sure the ctid does not break the matching
|
-- minor improvement, make sure the ctid does not break the matching
|
||||||
@ -589,43 +564,16 @@ INSERT INTO ndistinct (a, b, c, filler1)
|
|||||||
mod(i,23) || ' dollars and zero cents'
|
mod(i,23) || ' dollars and zero cents'
|
||||||
FROM generate_series(1,1000) s(i);
|
FROM generate_series(1,1000) s(i);
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
stxkind | stxdndistinct
|
stxkind | stxdndistinct
|
||||||
---------+----------------------------
|
---------+-----------------------------------------------
|
||||||
{d,f,m} | [ +
|
{d,f,m} | [{"attributes": [3, 4], "ndistinct": 221}, +
|
||||||
| { +
|
| {"attributes": [3, 6], "ndistinct": 247}, +
|
||||||
| "ndistinct": 221, +
|
| {"attributes": [4, 6], "ndistinct": 323}, +
|
||||||
| "attributes": [ +
|
| {"attributes": [3, 4, 6], "ndistinct": 1000}]
|
||||||
| 3, +
|
|
||||||
| 4 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 247, +
|
|
||||||
| "attributes": [ +
|
|
||||||
| 3, +
|
|
||||||
| 6 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 323, +
|
|
||||||
| "attributes": [ +
|
|
||||||
| 4, +
|
|
||||||
| 6 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 1000,+
|
|
||||||
| "attributes": [ +
|
|
||||||
| 3, +
|
|
||||||
| 4, +
|
|
||||||
| 6 +
|
|
||||||
| ] +
|
|
||||||
| } +
|
|
||||||
| ]
|
|
||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
-- correct estimates
|
-- correct estimates
|
||||||
@ -684,7 +632,7 @@ SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, (
|
|||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
DROP STATISTICS s10;
|
DROP STATISTICS s10;
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
@ -768,43 +716,16 @@ SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, (
|
|||||||
|
|
||||||
CREATE STATISTICS s10 (ndistinct) ON (a+1), (b+100), (2*c) FROM ndistinct;
|
CREATE STATISTICS s10 (ndistinct) ON (a+1), (b+100), (2*c) FROM ndistinct;
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
stxkind | stxdndistinct
|
stxkind | stxdndistinct
|
||||||
---------+----------------------------
|
---------+--------------------------------------------------
|
||||||
{d,e} | [ +
|
{d,e} | [{"attributes": [-1, -2], "ndistinct": 221}, +
|
||||||
| { +
|
| {"attributes": [-1, -3], "ndistinct": 247}, +
|
||||||
| "ndistinct": 221, +
|
| {"attributes": [-2, -3], "ndistinct": 323}, +
|
||||||
| "attributes": [ +
|
| {"attributes": [-1, -2, -3], "ndistinct": 1000}]
|
||||||
| -1, +
|
|
||||||
| -2 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 247, +
|
|
||||||
| "attributes": [ +
|
|
||||||
| -1, +
|
|
||||||
| -3 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 323, +
|
|
||||||
| "attributes": [ +
|
|
||||||
| -2, +
|
|
||||||
| -3 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 1000,+
|
|
||||||
| "attributes": [ +
|
|
||||||
| -1, +
|
|
||||||
| -2, +
|
|
||||||
| -3 +
|
|
||||||
| ] +
|
|
||||||
| } +
|
|
||||||
| ]
|
|
||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY (a+1), (b+100)');
|
SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY (a+1), (b+100)');
|
||||||
@ -847,43 +768,16 @@ SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, b
|
|||||||
|
|
||||||
CREATE STATISTICS s10 (ndistinct) ON a, b, (2*c) FROM ndistinct;
|
CREATE STATISTICS s10 (ndistinct) ON a, b, (2*c) FROM ndistinct;
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
stxkind | stxdndistinct
|
stxkind | stxdndistinct
|
||||||
---------+----------------------------
|
---------+------------------------------------------------
|
||||||
{d,e} | [ +
|
{d,e} | [{"attributes": [3, 4], "ndistinct": 221}, +
|
||||||
| { +
|
| {"attributes": [3, -1], "ndistinct": 247}, +
|
||||||
| "ndistinct": 221, +
|
| {"attributes": [4, -1], "ndistinct": 323}, +
|
||||||
| "attributes": [ +
|
| {"attributes": [3, 4, -1], "ndistinct": 1000}]
|
||||||
| 3, +
|
|
||||||
| 4 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 247, +
|
|
||||||
| "attributes": [ +
|
|
||||||
| 3, +
|
|
||||||
| -1 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 323, +
|
|
||||||
| "attributes": [ +
|
|
||||||
| 4, +
|
|
||||||
| -1 +
|
|
||||||
| ] +
|
|
||||||
| }, +
|
|
||||||
| { +
|
|
||||||
| "ndistinct": 1000,+
|
|
||||||
| "attributes": [ +
|
|
||||||
| 3, +
|
|
||||||
| 4, +
|
|
||||||
| -1 +
|
|
||||||
| ] +
|
|
||||||
| } +
|
|
||||||
| ]
|
|
||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, b');
|
SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, b');
|
||||||
@ -1434,48 +1328,14 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE
|
|||||||
CREATE STATISTICS func_deps_stat (dependencies) ON a, b, c FROM functional_dependencies;
|
CREATE STATISTICS func_deps_stat (dependencies) ON a, b, c FROM functional_dependencies;
|
||||||
ANALYZE functional_dependencies;
|
ANALYZE functional_dependencies;
|
||||||
-- print the detected dependencies
|
-- print the detected dependencies
|
||||||
SELECT jsonb_pretty(dependencies::text::jsonb) AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
SELECT replace(dependencies, '}, ', E'},\n') AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
||||||
dependencies
|
dependencies
|
||||||
-----------------------------
|
--------------------------------------------------------------
|
||||||
[ +
|
[{"attributes": [3], "dependency": 4, "degree": 1.000000}, +
|
||||||
{ +
|
{"attributes": [3], "dependency": 6, "degree": 1.000000}, +
|
||||||
"degree": 1.000000,+
|
{"attributes": [4], "dependency": 6, "degree": 1.000000}, +
|
||||||
"attributes": [ +
|
{"attributes": [3, 4], "dependency": 6, "degree": 1.000000},+
|
||||||
3 +
|
{"attributes": [3, 6], "dependency": 4, "degree": 1.000000}]
|
||||||
], +
|
|
||||||
"dependency": 4 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
3 +
|
|
||||||
], +
|
|
||||||
"dependency": 6 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
4 +
|
|
||||||
], +
|
|
||||||
"dependency": 6 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
3, +
|
|
||||||
4 +
|
|
||||||
], +
|
|
||||||
"dependency": 6 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
3, +
|
|
||||||
6 +
|
|
||||||
], +
|
|
||||||
"dependency": 4 +
|
|
||||||
} +
|
|
||||||
]
|
|
||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a = 1 AND b = ''1''');
|
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a = 1 AND b = ''1''');
|
||||||
@ -1814,48 +1674,14 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE
|
|||||||
CREATE STATISTICS func_deps_stat (dependencies) ON (a * 2), upper(b), (c + 1) FROM functional_dependencies;
|
CREATE STATISTICS func_deps_stat (dependencies) ON (a * 2), upper(b), (c + 1) FROM functional_dependencies;
|
||||||
ANALYZE functional_dependencies;
|
ANALYZE functional_dependencies;
|
||||||
-- print the detected dependencies
|
-- print the detected dependencies
|
||||||
SELECT jsonb_pretty(dependencies::text::jsonb) AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
SELECT replace(dependencies, '}, ', E'},\n') AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
||||||
dependencies
|
dependencies
|
||||||
-----------------------------
|
-----------------------------------------------------------------
|
||||||
[ +
|
[{"attributes": [-1], "dependency": -2, "degree": 1.000000}, +
|
||||||
{ +
|
{"attributes": [-1], "dependency": -3, "degree": 1.000000}, +
|
||||||
"degree": 1.000000,+
|
{"attributes": [-2], "dependency": -3, "degree": 1.000000}, +
|
||||||
"attributes": [ +
|
{"attributes": [-1, -2], "dependency": -3, "degree": 1.000000},+
|
||||||
-1 +
|
{"attributes": [-1, -3], "dependency": -2, "degree": 1.000000}]
|
||||||
], +
|
|
||||||
"dependency": -2 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
-1 +
|
|
||||||
], +
|
|
||||||
"dependency": -3 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
-2 +
|
|
||||||
], +
|
|
||||||
"dependency": -3 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
-1, +
|
|
||||||
-2 +
|
|
||||||
], +
|
|
||||||
"dependency": -3 +
|
|
||||||
}, +
|
|
||||||
{ +
|
|
||||||
"degree": 1.000000,+
|
|
||||||
"attributes": [ +
|
|
||||||
-1, +
|
|
||||||
-3 +
|
|
||||||
], +
|
|
||||||
"dependency": -2 +
|
|
||||||
} +
|
|
||||||
]
|
|
||||||
(1 row)
|
(1 row)
|
||||||
|
|
||||||
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE (a * 2) = 2 AND upper(b) = ''1''');
|
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE (a * 2) = 2 AND upper(b) = ''1''');
|
||||||
|
|||||||
@ -125,8 +125,10 @@ ALTER TABLE ab1 ALTER a SET STATISTICS -1;
|
|||||||
ALTER STATISTICS ab1_a_b_stats SET STATISTICS 0;
|
ALTER STATISTICS ab1_a_b_stats SET STATISTICS 0;
|
||||||
\d ab1
|
\d ab1
|
||||||
ANALYZE ab1;
|
ANALYZE ab1;
|
||||||
SELECT stxname, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct,
|
SELECT stxname,
|
||||||
jsonb_pretty(d.stxddependencies::text::jsonb) AS stxddependencies, stxdmcv, stxdinherit
|
replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct,
|
||||||
|
replace(d.stxddependencies, '}, ', E'},\n') AS stxddependencies,
|
||||||
|
stxdmcv, stxdinherit
|
||||||
FROM pg_statistic_ext s LEFT JOIN pg_statistic_ext_data d ON (d.stxoid = s.oid)
|
FROM pg_statistic_ext s LEFT JOIN pg_statistic_ext_data d ON (d.stxoid = s.oid)
|
||||||
WHERE s.stxname = 'ab1_a_b_stats';
|
WHERE s.stxname = 'ab1_a_b_stats';
|
||||||
ALTER STATISTICS ab1_a_b_stats SET STATISTICS -1;
|
ALTER STATISTICS ab1_a_b_stats SET STATISTICS -1;
|
||||||
@ -298,7 +300,7 @@ CREATE STATISTICS s10 ON a, b, c FROM ndistinct;
|
|||||||
|
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
|
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
@ -339,7 +341,7 @@ INSERT INTO ndistinct (a, b, c, filler1)
|
|||||||
|
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
|
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
@ -365,7 +367,7 @@ SELECT * FROM check_estimated_rows('SELECT COUNT(*) FROM ndistinct GROUP BY a, (
|
|||||||
|
|
||||||
DROP STATISTICS s10;
|
DROP STATISTICS s10;
|
||||||
|
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
@ -400,7 +402,7 @@ CREATE STATISTICS s10 (ndistinct) ON (a+1), (b+100), (2*c) FROM ndistinct;
|
|||||||
|
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
|
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
@ -424,7 +426,7 @@ CREATE STATISTICS s10 (ndistinct) ON a, b, (2*c) FROM ndistinct;
|
|||||||
|
|
||||||
ANALYZE ndistinct;
|
ANALYZE ndistinct;
|
||||||
|
|
||||||
SELECT s.stxkind, jsonb_pretty(d.stxdndistinct::text::jsonb) AS stxdndistinct
|
SELECT s.stxkind, replace(d.stxdndistinct, '}, ', E'},\n') AS stxdndistinct
|
||||||
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
FROM pg_statistic_ext s, pg_statistic_ext_data d
|
||||||
WHERE s.stxrelid = 'ndistinct'::regclass
|
WHERE s.stxrelid = 'ndistinct'::regclass
|
||||||
AND d.stxoid = s.oid;
|
AND d.stxoid = s.oid;
|
||||||
@ -709,7 +711,7 @@ CREATE STATISTICS func_deps_stat (dependencies) ON a, b, c FROM functional_depen
|
|||||||
ANALYZE functional_dependencies;
|
ANALYZE functional_dependencies;
|
||||||
|
|
||||||
-- print the detected dependencies
|
-- print the detected dependencies
|
||||||
SELECT jsonb_pretty(dependencies::text::jsonb) AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
SELECT replace(dependencies, '}, ', E'},\n') AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
||||||
|
|
||||||
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a = 1 AND b = ''1''');
|
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a = 1 AND b = ''1''');
|
||||||
|
|
||||||
@ -845,7 +847,7 @@ CREATE STATISTICS func_deps_stat (dependencies) ON (a * 2), upper(b), (c + 1) FR
|
|||||||
ANALYZE functional_dependencies;
|
ANALYZE functional_dependencies;
|
||||||
|
|
||||||
-- print the detected dependencies
|
-- print the detected dependencies
|
||||||
SELECT jsonb_pretty(dependencies::text::jsonb) AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
SELECT replace(dependencies, '}, ', E'},\n') AS dependencies FROM pg_stats_ext WHERE statistics_name = 'func_deps_stat';
|
||||||
|
|
||||||
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE (a * 2) = 2 AND upper(b) = ''1''');
|
SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE (a * 2) = 2 AND upper(b) = ''1''');
|
||||||
|
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user