--
-- first, define the functions. Turn off echoing so that expected file
-- does not depend on contents of tablefunc.sql.
--
\set ECHO none
--
-- normal_rand()
-- no easy way to do this for regression testing
--
SELECT avg(normal_rand)::int FROM normal_rand(100, 250, 0.2, EXTRACT(SECONDS FROM CURRENT_TIME(0))::int);
avg
-----
250
(1 row)
--
-- crosstab()
--
CREATE TABLE ct(id int, rowclass text, rowid text, attribute text, val text);
\copy ct from 'data/ct.data'
SELECT * FROM crosstab2('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' and (attribute = ''att2'' or attribute = ''att3'') ORDER BY 1,2;');
row_name | category_1 | category_2
----------+------------+------------
test1 | val2 | val3
test2 | val6 | val7
(2 rows)
SELECT * FROM crosstab3('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' and (attribute = ''att2'' or attribute = ''att3'') ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3
----------+------------+------------+------------
test1 | val2 | val3 |
test2 | val6 | val7 |
(2 rows)
SELECT * FROM crosstab4('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' and (attribute = ''att2'' or attribute = ''att3'') ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3 | category_4
----------+------------+------------+------------+------------
test1 | val2 | val3 | |
test2 | val6 | val7 | |
(2 rows)
SELECT * FROM crosstab2('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' ORDER BY 1,2;');
row_name | category_1 | category_2
----------+------------+------------
test1 | val1 | val2
test2 | val5 | val6
(2 rows)
SELECT * FROM crosstab3('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3
----------+------------+------------+------------
test1 | val1 | val2 | val3
test2 | val5 | val6 | val7
(2 rows)
SELECT * FROM crosstab4('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3 | category_4
----------+------------+------------+------------+------------
test1 | val1 | val2 | val3 | val4
test2 | val5 | val6 | val7 | val8
(2 rows)
SELECT * FROM crosstab2('SELECT rowid, attribute, val FROM ct where rowclass = ''group2'' and (attribute = ''att1'' or attribute = ''att2'') ORDER BY 1,2;');
row_name | category_1 | category_2
----------+------------+------------
test3 | val1 | val2
test4 | val4 | val5
(2 rows)
SELECT * FROM crosstab3('SELECT rowid, attribute, val FROM ct where rowclass = ''group2'' and (attribute = ''att1'' or attribute = ''att2'') ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3
----------+------------+------------+------------
test3 | val1 | val2 |
test4 | val4 | val5 |
(2 rows)
SELECT * FROM crosstab4('SELECT rowid, attribute, val FROM ct where rowclass = ''group2'' and (attribute = ''att1'' or attribute = ''att2'') ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3 | category_4
----------+------------+------------+------------+------------
test3 | val1 | val2 | |
test4 | val4 | val5 | |
(2 rows)
SELECT * FROM crosstab2('SELECT rowid, attribute, val FROM ct where rowclass = ''group2'' ORDER BY 1,2;');
row_name | category_1 | category_2
----------+------------+------------
test3 | val1 | val2
test4 | val4 | val5
(2 rows)
SELECT * FROM crosstab3('SELECT rowid, attribute, val FROM ct where rowclass = ''group2'' ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3
----------+------------+------------+------------
test3 | val1 | val2 | val3
test4 | val4 | val5 | val6
(2 rows)
SELECT * FROM crosstab4('SELECT rowid, attribute, val FROM ct where rowclass = ''group2'' ORDER BY 1,2;');
row_name | category_1 | category_2 | category_3 | category_4
----------+------------+------------+------------+------------
test3 | val1 | val2 | val3 |
test4 | val4 | val5 | val6 |
(2 rows)
SELECT * FROM crosstab('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' ORDER BY 1,2;', 2) AS c(rowid text, att1 text, att2 text);
rowid | att1 | att2
-------+------+------
test1 | val1 | val2
test2 | val5 | val6
(2 rows)
SELECT * FROM crosstab('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' ORDER BY 1,2;', 3) AS c(rowid text, att1 text, att2 text, att3 text);
rowid | att1 | att2 | att3
-------+------+------+------
test1 | val1 | val2 | val3
test2 | val5 | val6 | val7
(2 rows)
SELECT * FROM crosstab('SELECT rowid, attribute, val FROM ct where rowclass = ''group1'' ORDER BY 1,2;', 4) AS c(rowid text, att1 text, att2 text, att3 text, att4 text);
rowid | att1 | att2 | att3 | att4
-------+------+------+------+------
test1 | val1 | val2 | val3 | val4
test2 | val5 | val6 | val7 | val8
(2 rows)
-- test connectby with text based hierarchy
CREATE TABLE connectby_text(keyid text, parent_keyid text);
\copy connectby_text from 'data/connectby_text.data'
-- with branch
SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0, '~') AS t(keyid text, parent_keyid text, level int, branch text);
keyid | parent_keyid | level | branch
-------+--------------+-------+---------------------
row2 | | 0 | row2
row4 | row2 | 1 | row2~row4
row6 | row4 | 2 | row2~row4~row6
row8 | row6 | 3 | row2~row4~row6~row8
row5 | row2 | 1 | row2~row5
row9 | row5 | 2 | row2~row5~row9
(6 rows)
-- without branch
SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0) AS t(keyid text, parent_keyid text, level int);
keyid | parent_keyid | level
-------+--------------+-------
row2 | | 0
row4 | row2 | 1
row6 | row4 | 2
row8 | row6 | 3
row5 | row2 | 1
row9 | row5 | 2
(6 rows)
-- test connectby with int based hierarchy
CREATE TABLE connectby_int(keyid int, parent_keyid int);
\copy connectby_int from 'data/connectby_int.data'
-- with branch
SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 0, '~') AS t(keyid int, parent_keyid int, level int, branch text);
keyid | parent_keyid | level | branch
-------+--------------+-------+---------
2 | | 0 | 2
4 | 2 | 1 | 2~4
6 | 4 | 2 | 2~4~6
8 | 6 | 3 | 2~4~6~8
5 | 2 | 1 | 2~5
9 | 5 | 2 | 2~5~9
(6 rows)
-- without branch
SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 0) AS t(keyid int, parent_keyid int, level int);
keyid | parent_keyid | level
-------+--------------+-------
2 | | 0
4 | 2 | 1
6 | 4 | 2
8 | 6 | 3
5 | 2 | 1
9 | 5 | 2
(6 rows)
-- recursion detection
INSERT INTO connectby_int VALUES(10,9);
INSERT INTO connectby_int VALUES(11,10);
INSERT INTO connectby_int VALUES(9,11);
-- should fail due to infinite recursion
SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 0, '~') AS t(keyid int, parent_keyid int, level int, branch text);
ERROR: infinite recursion detected
-- infinite recursion failure avoided by depth limit
SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 4, '~') AS t(keyid int, parent_keyid int, level int, branch text);
keyid | parent_keyid | level | branch
-------+--------------+-------+-------------
2 | | 0 | 2
4 | 2 | 1 | 2~4
6 | 4 | 2 | 2~4~6
8 | 6 | 3 | 2~4~6~8
5 | 2 | 1 | 2~5
9 | 5 | 2 | 2~5~9
10 | 9 | 3 | 2~5~9~10
11 | 10 | 4 | 2~5~9~10~11
(8 rows)
-- test for falsely detected recursion
DROP TABLE connectby_int;
CREATE TABLE connectby_int(keyid int, parent_keyid int);
INSERT INTO connectby_int VALUES(11,NULL);
INSERT INTO connectby_int VALUES(10,11);
INSERT INTO connectby_int VALUES(111,11);
INSERT INTO connectby_int VALUES(1,111);
-- this should not fail due to recursion detection
SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '11', 0, '-') AS t(keyid int, parent_keyid int, level int, branch text);
keyid | parent_keyid | level | branch
-------+--------------+-------+----------
11 | | 0 | 11
10 | 11 | 1 | 11-10
111 | 11 | 1 | 11-111
1 | 111 | 2 | 11-111-1
(4 rows)