We're using Trac for issue tracking. I migrated it from MySQL to PostgreSQL, but some of the ticket queries no longer work.
In the below, all I did this far is replace IFNULL()
with COALESCE()
and UNIX_TIMESTAMP()
with TO_TIMESTAMP()::TIMESTAMP
I don't know what the error means. The query worked just fine in MySQL, and I'm not sure, after looking at pages discussing differences between it and PostgreSQL, what the problem is (I also don't know what to replace the SEC_TO_TIME line with, but removing that line doesn't fix the error).
SELECT IFNULL(CONCAT('Component ', t.component), 'Total for all Components') AS __group__,
(CASE
WHEN t.id > 0 THEN (CASE t.status WHEN 'closed' THEN 'color: #777; background: #ddd; border-color: #ccc;' END)
ELSE 'font-weight: bold'
END) AS __style__,
t.id AS ticket,
IF(t.id > 0, t.summary, 'Total') AS summary,
SEC_TO_TIME(SUM(IF(w.endtime, w.endtime, TO_TIMESTAMP(NOW())::TIMESTAMP) - w.starttime)) AS total
FROM ticket t
INNER JOIN work_log w
WHERE t.id = w.ticket
GROUP BY t.component, t.id, t.summary, t.status
WITH ROLLUP HAVING IFNULL(id, -1) = -1 OR (t.summary IS NOT NULL AND t.status IS NOT NULL);
ERROR: syntax error at or near "WHERE"
LINE 11: WHERE t.id = w.ticket
Edit: I tried changing the WHERE
to ON
, and that seemed to fix that error; however, I don't know if this is the correct solution. Also, now I get an error with the "WITH ROLLUP HAVING"
part. What's the way to do it in PostgreSQL?
Also, I don't know what to replace SEC_TO_TIME
with above, or the SUM
/ IF
combo (as IF()
is MySQL only–if I swap to CASE
, do I need to test separately for 0 and null?). Using TO_CHAR as per http://www.verious.com/qa/sec-to-time-function-in-postgre-sql/ doesn't work because the minutes are always zero with the code given there (i.e. 90 seconds ends up as 00:00:30…)
Edit 2: What I'm trying to end up with, which was the case with MySQL:
Edit 3: Thanks to a_horse_with_no_name and efesar, I've ended up with the following working query:
WITH base AS (
SELECT t.component AS component, t.status AS status, t.id AS ticket, t.summary AS summary,
SUM((CASE WHEN w.endtime > 0 THEN w.endtime ELSE CAST(EXTRACT(EPOCH FROM current_timestamp) AS bigint) END) - w.starttime) * INTERVAL '1 second' AS total
FROM ticket t
INNER JOIN work_log w
ON t.id = w.ticket
GROUP BY t.component, t.id, t.summary, t.status
)
SELECT CONCAT('Component ', component) AS __group__,
(CASE status WHEN 'closed' THEN 'color: #777; background: #ddd; border-color: #ccc;' END) AS __style__,
ticket, summary, total
FROM base
UNION ALL
SELECT CONCAT('Component ', component) AS __group__,
'font-weight: bold' as __style__, null, 'Total', SUM(total)
FROM base
GROUP BY __group__
UNION ALL
SELECT 'All Components' AS __group__, 'font-weight: bold' as __style__, null, 'Total', SUM(total)
FROM base
ORDER BY __group__, ticket
Best Answer
Something like this:
The
sum()
will sum up the difference in milliseconds betweenendtime
andstarttime
not sure what the intention behind that is.I'm not entirely sure what the rollup does, but something along the lines:
might get you started.