src/test/regress/expected/psql_crosstab.out - master - githubmirror/postgres

src/test/regress/expected/psql_crosstab.out
245 строк7 KB
Álvaro Herrera
Make crosstabview honor boolean/null display settings
26 июн 2026, 21:03
26 июн 2026, 21:034df5fe3
--
-- \crosstabview
--
CREATE TABLE ctv_data (v, h, c, i, d) AS
VALUES
   ('v1','h2','foo', 3, '2015-04-01'::date),
   ('v2','h1','bar', 3, '2015-01-02'),
   ('v1','h0','baz', NULL, '2015-07-12'),
   ('v0','h4','qux', 4, '2015-07-15'),
   ('v0','h4','dbl', -3, '2014-12-15'),
   ('v0',NULL,'qux', 5, '2014-07-15'),
   ('v1','h2','quux',7, '2015-04-04');
-- make plans more stable
ANALYZE ctv_data;
-- running \crosstabview after query uses query in buffer
SELECT v, EXTRACT(year FROM d), count(*)
 FROM ctv_data
 GROUP BY 1, 2
 ORDER BY 1, 2;
 v  | extract | count 
----+---------+-------
 v0 |    2014 |     2
 v0 |    2015 |     1
 v1 |    2015 |     3
 v2 |    2015 |     1
(4 rows)

-- basic usage with 3 columns
 \crosstabview
 v  | 2014 | 2015 
----+------+------
 v0 |    2 |    1
 v1 |      |    3
 v2 |      |    1
(3 rows)

-- ordered months in horizontal header, quoted column name
SELECT v, to_char(d, 'Mon') AS "month name", EXTRACT(month FROM d) AS num,
 count(*) FROM ctv_data  GROUP BY 1,2,3 ORDER BY 1
 \crosstabview v "month name" 4 num
 v  | Jan | Apr | Jul | Dec 
----+-----+-----+-----+-----
 v0 |     |     |   2 |   1
 v1 |     |   2 |   1 |    
 v2 |   1 |     |     |    
(3 rows)

-- ordered months in vertical header, ordered years in horizontal header
SELECT EXTRACT(year FROM d) AS year, to_char(d,'Mon') AS """month"" name",
  EXTRACT(month FROM d) AS month,
  format('sum=%s avg=%s', sum(i), avg(i)::numeric(2,1))
  FROM ctv_data
  GROUP BY EXTRACT(year FROM d), to_char(d,'Mon'), EXTRACT(month FROM d)
ORDER BY month
\crosstabview """month"" name" year format year
 "month" name |      2014       |      2015      
--------------+-----------------+----------------
 Jan          |                 | sum=3 avg=3.0
 Apr          |                 | sum=10 avg=5.0
 Jul          | sum=5 avg=5.0   | sum=4 avg=4.0
 Dec          | sum=-3 avg=-3.0 | 
(4 rows)

-- combine contents vertically into the same cell (V/H duplicates)
SELECT v, h, string_agg(c, E'\n') FROM ctv_data GROUP BY v, h ORDER BY 1,2,3
 \crosstabview 1 2 3
 v  | h4  |     | h0  |  h2  | h1  
----+-----+-----+-----+------+-----
 v0 | qux+| qux |     |      | 
    | dbl |     |     |      | 
 v1 |     |     | baz | foo +| 
    |     |     |     | quux | 
 v2 |     |     |     |      | bar
(3 rows)

-- horizontal ASC order from window function
SELECT v,h, string_agg(c, E'\n') AS c, row_number() OVER(ORDER BY h) AS r
FROM ctv_data GROUP BY v, h ORDER BY 1,3,2
 \crosstabview v h c r
 v  | h0  | h1  |  h2  | h4  |     
----+-----+-----+------+-----+-----
 v0 |     |     |      | qux+| qux
    |     |     |      | dbl | 
 v1 | baz |     | foo +|     | 
    |     |     | quux |     | 
 v2 |     | bar |      |     | 
(3 rows)

-- horizontal DESC order from window function
SELECT v, h, string_agg(c, E'\n') AS c, row_number() OVER(ORDER BY h DESC) AS r
FROM ctv_data GROUP BY v, h ORDER BY 1,3,2
 \crosstabview v h c r
 v  |     | h4  |  h2  | h1  | h0  
----+-----+-----+------+-----+-----
 v0 | qux | qux+|      |     | 
    |     | dbl |      |     | 
 v1 |     |     | foo +|     | baz
    |     |     | quux |     | 
 v2 |     |     |      | bar | 
(3 rows)

-- horizontal ASC order from window function, NULLs pushed rightmost
SELECT v,h, string_agg(c, E'\n') AS c, row_number() OVER(ORDER BY h NULLS LAST) AS r
FROM ctv_data GROUP BY v, h ORDER BY 1,3,2
 \crosstabview v h c r
 v  | h0  | h1  |  h2  | h4  |     
----+-----+-----+------+-----+-----
 v0 |     |     |      | qux+| qux
    |     |     |      | dbl | 
 v1 | baz |     | foo +|     | 
    |     |     | quux |     | 
 v2 |     | bar |      |     | 
(3 rows)

-- only null, no column name, 2 columns: error
SELECT null,null \crosstabview
\crosstabview: query must return at least three columns
-- only null, no column name, 3 columns: works
SELECT null,null,null \crosstabview
 ?column? |  
----------+--
          | 
(1 row)

-- null display
\pset null '#null#'
SELECT v,h, string_agg(i::text, E'\n') AS i FROM ctv_data
GROUP BY v, h ORDER BY h,v
 \crosstabview v h i
 v  |   h0   | h1 | h2 | h4 | #null# 
----+--------+----+----+----+--------
 v1 | #null# |    | 3 +|    | 
    |        |    | 7  |    | 
 v2 |        | 3  |    |    | 
 v0 |        |    |    | 4 +| 5
    |        |    |    | -3 | 
(3 rows)

\pset null ''
-- boolean display
\pset display_true 'Aye'
\pset display_false 'Nay'
\pset null 'Wut'
with rows (display_bools, col_key, val) as (values
	(false, false, false),
	(true, true, true),
	(null, null, null),
	(null, true, false),
	(null, false, true),
	(true, null, false),
	(false, null, true)
) select * from rows
 \crosstabview display_bools col_key val
 display_bools | Nay | Aye | Wut 
---------------+-----+-----+-----
 Nay           | Nay |     | Aye
 Aye           |     | Aye | Nay
 Wut           | Aye | Nay | Wut
(3 rows)

with rows (tst, col, val) as (values
	(true, null, 42), (true, null, 142857)
) select * from rows
 \crosstabview tst col
\crosstabview: query result contains multiple data values for row "Aye", column "Wut"
\pset display_true 't'
\pset display_false 'f'
\pset null ''
-- refer to columns by position
SELECT v,h,string_agg(i::text, E'\n'), string_agg(c, E'\n')
FROM ctv_data GROUP BY v, h ORDER BY h,v
 \crosstabview 2 1 4
 h  |  v1  | v2  | v0  
----+------+-----+-----
 h0 | baz  |     | 
 h1 |      | bar | 
 h2 | foo +|     | 
    | quux |     | 
 h4 |      |     | qux+
    |      |     | dbl
    |      |     | qux
(5 rows)

-- refer to columns by positions and names mixed
SELECT v,h, string_agg(i::text, E'\n') AS i, string_agg(c, E'\n') AS c
FROM ctv_data GROUP BY v, h ORDER BY h,v
 \crosstabview 1 "h" 4
 v  | h0  | h1  |  h2  | h4  |     
----+-----+-----+------+-----+-----
 v1 | baz |     | foo +|     | 
    |     |     | quux |     | 
 v2 |     | bar |      |     | 
 v0 |     |     |      | qux+| qux
    |     |     |      | dbl | 
(3 rows)

-- refer to columns by quoted names, check downcasing of unquoted name
SELECT 1 as "22", 2 as b, 3 as "Foo"
 \crosstabview "22" B "Foo"
 22 | 2 
----+---
  1 | 3
(1 row)

-- error: bad column name
SELECT v,h,c,i FROM ctv_data
 \crosstabview v h j
\crosstabview: column name not found: "j"
-- error: need to quote name
SELECT 1 as "22", 2 as b, 3 as "Foo"
 \crosstabview 1 2 Foo
\crosstabview: column name not found: "foo"
-- error: need to not quote name
SELECT 1 as "22", 2 as b, 3 as "Foo"
 \crosstabview 1 "B" "Foo"
\crosstabview: column name not found: "B"
-- error: bad column number
SELECT v,h,i,c FROM ctv_data
 \crosstabview 2 1 5
\crosstabview: column number 5 is out of range 1..4
-- error: same H and V columns
SELECT v,h,i,c FROM ctv_data
 \crosstabview 2 h 4
\crosstabview: vertical and horizontal headers must be different columns
-- error: too many columns
SELECT a,a,1 FROM generate_series(1,3000) AS a
 \crosstabview
\crosstabview: maximum number of columns (1600) exceeded
-- error: only one column
SELECT 1 \crosstabview
\crosstabview: query must return at least three columns
DROP TABLE ctv_data;
-- check error reporting (bug #14476)
CREATE TABLE ctv_data (x int, y int, v text);
INSERT INTO ctv_data SELECT 1, x, '*' || x FROM generate_series(1,10) x;
SELECT * FROM ctv_data \crosstabview
 x | 1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10  
---+----+----+----+----+----+----+----+----+----+-----
 1 | *1 | *2 | *3 | *4 | *5 | *6 | *7 | *8 | *9 | *10
(1 row)

INSERT INTO ctv_data VALUES (1, 10, '*'); -- duplicate data to cause error
SELECT * FROM ctv_data \crosstabview
\crosstabview: query result contains multiple data values for row "1", column "10"
DROP TABLE ctv_data;