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a62873d279
behavior of connectby() in the presence of infinite recursion. Please apply this one in addition to the one sent earlier. Joe Conway
218 lines
8.8 KiB
Plaintext
218 lines
8.8 KiB
Plaintext
--
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-- first, define the functions. Turn off echoing so that expected file
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-- does not depend on contents of tablefunc.sql.
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--
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\set ECHO none
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--
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-- normal_rand()
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-- no easy way to do this for regression testing
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--
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SELECT avg(normal_rand)::int FROM normal_rand(100, 250, 0.2, EXTRACT(SECONDS FROM CURRENT_TIME(0))::int);
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avg
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-----
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250
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(1 row)
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--
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-- crosstab()
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--
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create table ct(id int, rowclass text, rowid text, attribute text, value text);
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\copy ct from 'data/ct.data'
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select * from crosstab2('select rowid, attribute, value from ct where rowclass = ''group1'' and (attribute = ''att2'' or attribute = ''att3'') order by 1,2;');
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row_name | category_1 | category_2
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----------+------------+------------
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test1 | val2 | val3
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test2 | val6 | val7
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(2 rows)
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select * from crosstab3('select rowid, attribute, value from ct where rowclass = ''group1'' and (attribute = ''att2'' or attribute = ''att3'') order by 1,2;');
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row_name | category_1 | category_2 | category_3
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----------+------------+------------+------------
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test1 | val2 | val3 |
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test2 | val6 | val7 |
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(2 rows)
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select * from crosstab4('select rowid, attribute, value from ct where rowclass = ''group1'' and (attribute = ''att2'' or attribute = ''att3'') order by 1,2;');
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row_name | category_1 | category_2 | category_3 | category_4
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----------+------------+------------+------------+------------
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test1 | val2 | val3 | |
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test2 | val6 | val7 | |
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(2 rows)
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select * from crosstab2('select rowid, attribute, value from ct where rowclass = ''group1'' order by 1,2;');
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row_name | category_1 | category_2
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----------+------------+------------
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test1 | val1 | val2
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test2 | val5 | val6
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(2 rows)
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select * from crosstab3('select rowid, attribute, value from ct where rowclass = ''group1'' order by 1,2;');
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row_name | category_1 | category_2 | category_3
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----------+------------+------------+------------
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test1 | val1 | val2 | val3
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test2 | val5 | val6 | val7
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(2 rows)
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select * from crosstab4('select rowid, attribute, value from ct where rowclass = ''group1'' order by 1,2;');
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row_name | category_1 | category_2 | category_3 | category_4
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----------+------------+------------+------------+------------
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test1 | val1 | val2 | val3 | val4
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test2 | val5 | val6 | val7 | val8
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(2 rows)
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select * from crosstab2('select rowid, attribute, value from ct where rowclass = ''group2'' and (attribute = ''att1'' or attribute = ''att2'') order by 1,2;');
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row_name | category_1 | category_2
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----------+------------+------------
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test3 | val1 | val2
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test4 | val4 | val5
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(2 rows)
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select * from crosstab3('select rowid, attribute, value from ct where rowclass = ''group2'' and (attribute = ''att1'' or attribute = ''att2'') order by 1,2;');
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row_name | category_1 | category_2 | category_3
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----------+------------+------------+------------
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test3 | val1 | val2 |
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test4 | val4 | val5 |
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(2 rows)
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select * from crosstab4('select rowid, attribute, value from ct where rowclass = ''group2'' and (attribute = ''att1'' or attribute = ''att2'') order by 1,2;');
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row_name | category_1 | category_2 | category_3 | category_4
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----------+------------+------------+------------+------------
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test3 | val1 | val2 | |
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test4 | val4 | val5 | |
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(2 rows)
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select * from crosstab2('select rowid, attribute, value from ct where rowclass = ''group2'' order by 1,2;');
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row_name | category_1 | category_2
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----------+------------+------------
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test3 | val1 | val2
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test4 | val4 | val5
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(2 rows)
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select * from crosstab3('select rowid, attribute, value from ct where rowclass = ''group2'' order by 1,2;');
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row_name | category_1 | category_2 | category_3
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----------+------------+------------+------------
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test3 | val1 | val2 | val3
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test4 | val4 | val5 | val6
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(2 rows)
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select * from crosstab4('select rowid, attribute, value from ct where rowclass = ''group2'' order by 1,2;');
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row_name | category_1 | category_2 | category_3 | category_4
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----------+------------+------------+------------+------------
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test3 | val1 | val2 | val3 |
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test4 | val4 | val5 | val6 |
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(2 rows)
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select * from crosstab('select rowid, attribute, value from ct where rowclass = ''group1'' order by 1,2;', 2) as c(rowid text, att1 text, att2 text);
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rowid | att1 | att2
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-------+------+------
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test1 | val1 | val2
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test2 | val5 | val6
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(2 rows)
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select * from crosstab('select rowid, attribute, value from ct where rowclass = ''group1'' order by 1,2;', 3) as c(rowid text, att1 text, att2 text, att3 text);
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rowid | att1 | att2 | att3
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-------+------+------+------
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test1 | val1 | val2 | val3
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test2 | val5 | val6 | val7
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(2 rows)
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select * from crosstab('select rowid, attribute, value from ct where rowclass = ''group1'' order by 1,2;', 4) as c(rowid text, att1 text, att2 text, att3 text, att4 text);
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rowid | att1 | att2 | att3 | att4
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-------+------+------+------+------
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test1 | val1 | val2 | val3 | val4
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test2 | val5 | val6 | val7 | val8
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(2 rows)
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-- test connectby with text based hierarchy
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CREATE TABLE connectby_text(keyid text, parent_keyid text);
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\copy connectby_text from 'data/connectby_text.data'
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-- with branch
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SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0, '~') AS t(keyid text, parent_keyid text, level int, branch text);
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keyid | parent_keyid | level | branch
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-------+--------------+-------+---------------------
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row2 | | 0 | row2
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row4 | row2 | 1 | row2~row4
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row6 | row4 | 2 | row2~row4~row6
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row8 | row6 | 3 | row2~row4~row6~row8
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row5 | row2 | 1 | row2~row5
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row9 | row5 | 2 | row2~row5~row9
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(6 rows)
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-- without branch
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SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0) AS t(keyid text, parent_keyid text, level int);
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keyid | parent_keyid | level
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-------+--------------+-------
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row2 | | 0
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row4 | row2 | 1
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row6 | row4 | 2
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row8 | row6 | 3
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row5 | row2 | 1
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row9 | row5 | 2
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(6 rows)
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-- test connectby with int based hierarchy
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CREATE TABLE connectby_int(keyid int, parent_keyid int);
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\copy connectby_int from 'data/connectby_int.data'
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-- with branch
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SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 0, '~') AS t(keyid int, parent_keyid int, level int, branch text);
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keyid | parent_keyid | level | branch
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-------+--------------+-------+---------
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2 | | 0 | 2
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4 | 2 | 1 | 2~4
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6 | 4 | 2 | 2~4~6
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8 | 6 | 3 | 2~4~6~8
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5 | 2 | 1 | 2~5
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9 | 5 | 2 | 2~5~9
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(6 rows)
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-- without branch
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SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 0) AS t(keyid int, parent_keyid int, level int);
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keyid | parent_keyid | level
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-------+--------------+-------
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2 | | 0
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4 | 2 | 1
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6 | 4 | 2
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8 | 6 | 3
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5 | 2 | 1
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9 | 5 | 2
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(6 rows)
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-- recursion detection
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INSERT INTO connectby_int VALUES(10,9);
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INSERT INTO connectby_int VALUES(11,10);
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INSERT INTO connectby_int VALUES(9,11);
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-- should fail due to infinite recursion
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SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 0, '~') AS t(keyid int, parent_keyid int, level int, branch text);
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ERROR: infinite recursion detected
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-- infinite recursion failure avoided by depth limit
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SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '2', 4, '~') AS t(keyid int, parent_keyid int, level int, branch text);
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keyid | parent_keyid | level | branch
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-------+--------------+-------+-------------
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2 | | 0 | 2
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4 | 2 | 1 | 2~4
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6 | 4 | 2 | 2~4~6
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8 | 6 | 3 | 2~4~6~8
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5 | 2 | 1 | 2~5
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9 | 5 | 2 | 2~5~9
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10 | 9 | 3 | 2~5~9~10
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11 | 10 | 4 | 2~5~9~10~11
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(8 rows)
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-- test for falsely detected recursion
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DROP TABLE connectby_int;
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CREATE TABLE connectby_int(keyid int, parent_keyid int);
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INSERT INTO connectby_int VALUES(11,NULL);
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INSERT INTO connectby_int VALUES(10,11);
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INSERT INTO connectby_int VALUES(111,11);
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INSERT INTO connectby_int VALUES(1,111);
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-- this should not fail due to recursion detection
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SELECT * FROM connectby('connectby_int', 'keyid', 'parent_keyid', '11', 0, '-') AS t(keyid int, parent_keyid int, level int, branch text);
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keyid | parent_keyid | level | branch
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-------+--------------+-------+----------
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11 | | 0 | 11
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10 | 11 | 1 | 11-10
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111 | 11 | 1 | 11-111
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1 | 111 | 2 | 11-111-1
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(4 rows)
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