diff options
Diffstat (limited to 'contrib/tablefunc/sql/tablefunc.sql')
| -rw-r--r-- | contrib/tablefunc/sql/tablefunc.sql | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/contrib/tablefunc/sql/tablefunc.sql b/contrib/tablefunc/sql/tablefunc.sql index 7ca399fd07..9b03d82384 100644 --- a/contrib/tablefunc/sql/tablefunc.sql +++ b/contrib/tablefunc/sql/tablefunc.sql @@ -38,6 +38,61 @@ SELECT * FROM crosstab('SELECT rowid, attribute, val FROM ct where rowclass = '' 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); 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); +-- +-- hash based crosstab +-- +create table cth(id serial, rowid text, rowdt timestamp, attribute text, val text); +insert into cth values(DEFAULT,'test1','01 March 2003','temperature','42'); +insert into cth values(DEFAULT,'test1','01 March 2003','test_result','PASS'); +-- the next line is intentionally left commented and is therefore a "missing" attribute +-- insert into cth values(DEFAULT,'test1','01 March 2003','test_startdate','28 February 2003'); +insert into cth values(DEFAULT,'test1','01 March 2003','volts','2.6987'); +insert into cth values(DEFAULT,'test2','02 March 2003','temperature','53'); +insert into cth values(DEFAULT,'test2','02 March 2003','test_result','FAIL'); +insert into cth values(DEFAULT,'test2','02 March 2003','test_startdate','01 March 2003'); +insert into cth values(DEFAULT,'test2','02 March 2003','volts','3.1234'); + +-- return attributes as plain text +SELECT * FROM crosstab( + 'SELECT rowid, rowdt, attribute, val FROM cth ORDER BY 1', + 'SELECT DISTINCT attribute FROM cth ORDER BY 1') +AS c(rowid text, rowdt timestamp, temperature text, test_result text, test_startdate text, volts text); + +-- this time without rowdt +SELECT * FROM crosstab( + 'SELECT rowid, attribute, val FROM cth ORDER BY 1', + 'SELECT DISTINCT attribute FROM cth ORDER BY 1') +AS c(rowid text, temperature text, test_result text, test_startdate text, volts text); + +-- convert attributes to specific datatypes +SELECT * FROM crosstab( + 'SELECT rowid, rowdt, attribute, val FROM cth ORDER BY 1', + 'SELECT DISTINCT attribute FROM cth ORDER BY 1') +AS c(rowid text, rowdt timestamp, temperature int4, test_result text, test_startdate timestamp, volts float8); + +-- source query and category query out of sync +SELECT * FROM crosstab( + 'SELECT rowid, rowdt, attribute, val FROM cth ORDER BY 1', + 'SELECT DISTINCT attribute FROM cth WHERE attribute IN (''temperature'',''test_result'',''test_startdate'') ORDER BY 1') +AS c(rowid text, rowdt timestamp, temperature int4, test_result text, test_startdate timestamp); + +-- if category query generates no rows, get expected error +SELECT * FROM crosstab( + 'SELECT rowid, rowdt, attribute, val FROM cth ORDER BY 1', + 'SELECT DISTINCT attribute FROM cth WHERE attribute = ''a'' ORDER BY 1') +AS c(rowid text, rowdt timestamp, temperature int4, test_result text, test_startdate timestamp, volts float8); + +-- if category query generates more than one column, get expected error +SELECT * FROM crosstab( + 'SELECT rowid, rowdt, attribute, val FROM cth ORDER BY 1', + 'SELECT DISTINCT rowdt, attribute FROM cth ORDER BY 2') +AS c(rowid text, rowdt timestamp, temperature int4, test_result text, test_startdate timestamp, volts float8); + + +-- +-- connectby +-- + -- test connectby with text based hierarchy CREATE TABLE connectby_text(keyid text, parent_keyid text); \copy connectby_text from 'data/connectby_text.data' |