jl/schema/triggers/gl_insert_re.sql
2018-10-05 14:15:36 -04:00

233 lines
12 KiB
PL/PgSQL

---------------------------handle new gl lines----------------------------------------
CREATE OR REPLACE FUNCTION evt.gl_insert() RETURNS trigger
LANGUAGE plpgsql
AS
$func$
DECLARE
_mind timestamptz;
_maxd timestamptz;
BEGIN
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--find min and max applicable periods to roll
--min: earliest period involved in current gl posting
--max: latest period involved in any posting, or if none, the current posting
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SELECT
(SELECT min(lower(f.dur)) FROM ins INNER JOIN evt.fspr f ON f.id = ins.fspr)
,GREATEST(
--the last period inserted
(SELECT max(lower(f.dur)) FROM ins INNER JOIN evt.fspr f ON f.id = ins.fspr),
--or the last period touched anywhere, or if null, the last period inserted to
COALESCE(
(SELECT max(lower(dur)) FROM evt.fspr WHERE prop @> '{"gltouch":"yes"}'),
(SELECT max(lower(f.dur)) FROM ins INNER JOIN evt.fspr f ON f.id = ins.fspr)
)
)
INTO
_mind
,_maxd;
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--aggregate all inserted gl transactions
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
WITH
agg AS (
SELECT
acct
,fspr
,dur
,coalesce(sum(amount) FILTER (WHERE amount > 0),0) debits
,coalesce(sum(amount) FILTER (WHERE amount < 0),0) credits
FROM
ins
INNER JOIN evt.fspr f ON
f.id = ins.fspr
GROUP BY
acct
,fspr
,dur
)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--get every account touched in the transaction
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
,arng AS (
SELECT DISTINCT
b.acct
--if no retained earnings account exists then automitically create it (assuming no other account is called re)
,COALESCE(a.acct,subpath(b.acct,0,1)||'re'::ltree) re
,a.acct existing_re
,x.prop->>'func' func
FROM
agg b
--account master
INNER JOIN evt.acct x ON
x.acct = b.acct
LEFT OUTER JOIN evt.acct a ON
subpath(a.acct,0,1) = subpath(b.acct,0,1)
AND a.prop @> '{"retained_earnings":"set"}'::jsonb
)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
--if the default retained earnings account was null, insert the new one to evt.acct
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
,new_re AS (
INSERT INTO
evt.acct (acct, prop)
SELECT DISTINCT
re, '{"retained_earnings":"set"}'::jsonb
FROM
arng
WHERE
existing_re IS NULL
RETURNING *
)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--roll the balances forward
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
,bld AS (
WITH RECURSIVE rf (acct, func, re, flag, id, dur, obal, debits, credits, cbal, incr_re) AS
(
SELECT
a.acct
,a.func
,a.re
,null::BOOLEAN
,f.id
,f.dur
,COALESCE(b.obal::numeric(12,2),0)
,(COALESCE(b.debits,0) + COALESCE(agg.debits,0))::numeric(12,2)
,(COALESCE(b.credits,0) + COALESCE(agg.credits,0))::numeric(12,2)
,(COALESCE(b.cbal,0) + COALESCE(agg.debits,0) + COALESCE(agg.credits,0))::numeric(12,2)
,CASE func WHEN 'netinc' THEN (COALESCE(agg.debits,0) + COALESCE(agg.credits,0))::numeric(12,2) ELSE 0 END incr_re
FROM
arng a
INNER JOIN evt.fspr f ON
upper(f.dur) = _mind
LEFT OUTER JOIN evt.bal b ON
b.acct = a.acct
AND b.fspr = f.id
LEFT OUTER JOIN agg ON
agg.acct = a.acct
AND agg.fspr = f.id
UNION ALL
SELECT
--if the year is changing a duplicate join will happen which will allow moving balances to retained earnings
--the duplicate join happens only for accounts flagged as temporary and needing closed to retained earnings
--on the true side, the account retains its presence but takes on a zero balance
--on the false side, the account is swapped out for retained earngings accounts and take on the balance of the expense account
--if duplciate does not join itself, then treat as per anchor query above and continue aggregating balances for the target range
CASE dc.flag WHEN true THEN rf.acct WHEN false THEN rf.re ELSE rf.acct END acct
,rf.func
,rf.re
,dc.flag
,f.id
,f.dur
-- this column needs to pickup existing re
--if h.food is already in retained earnings and then you add in the entire re-rolled balance again it will be doubled up
--only the increment of the original transaction should be added to retained earnings
--the incremental retained earnings needs to survive even past the first dump to ret earn just in case a second year-end is encountered
,CASE dc.flag WHEN true THEN 0 WHEN false THEN COALESCE(rf.incr_re,0) + COALESCE(b.obal,0) ELSE COALESCE(rf.cbal,0) END::numeric(12,2) obal
,CASE dc.flag WHEN true THEN 0 WHEN false THEN 0 ELSE COALESCE(b.debits,0) + COALESCE(agg.debits,0) END::numeric(12,2) debits
,CASE dc.flag WHEN true THEN 0 WHEN false THEN 0 ELSE COALESCE(b.credits,0) + COALESCe(agg.credits,0) END::numeric(12,2) credits
,CASE dc.flag WHEN true THEN 0 WHEN false THEN COALESCE(rf.incr_re,0) + COALESCE(b.obal,0) ELSE COALESCE(rf.cbal,0) + COALESCE(b.debits,0) + COALESCE(b.credits,0) + COALESCE(agg.debits,0) + COALESCE(agg.credits,0) END::numeric(12,2) cbal
,CASE dc.flag WHEN true THEN rf.incr_re WHEN false THEN COALESCE(rf.incr_re,0) + COALESCE(b.obal,0) ELSE COALESCE(rf.incr_re,0) + COALESCE(agg.debits,0) + COALESCE(agg.credits,0) END::numeric(12,2) incr_re
FROM
rf
INNER JOIN evt.fspr f ON
lower(f.dur) = upper(rf.dur)
LEFT OUTER JOIN (SELECT * FROM (VALUES (true), (false)) X (flag)) dc ON
rf.func = 'netinc'
AND subpath(rf.id,0,1) <> subpath(f.id,0,1)
LEFT OUTER JOIN evt.bal b ON
b.acct = CASE dc.flag
WHEN true THEN rf.acct
WHEN false THEN rf.re
ELSE rf.acct
END
AND b.fspr = f.id
LEFT OUTER JOIN agg ON
agg.acct = CASE dc.flag
WHEN true THEN rf.acct
WHEN false THEN rf.re
ELSE rf.acct
END
AND agg.fspr = f.id
WHERE
lower(f.dur) <= _maxd
)
SELECT
acct
,id
,SUM(obal) obal
,SUM(debits) debits
,SUM(credits) credits
,SUM(cbal) cbal
FROM
rf
GROUP BY
acct
,id
)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--insert the balances
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
,ins AS (
INSERT INTO
evt.bal (acct, fspr, obal, debits, credits, cbal)
SELECT
acct
,id
,obal
,debits
,credits
,cbal
FROM
bld
ON CONFLICT ON CONSTRAINT bal_pk DO UPDATE SET
obal = EXCLUDED.obal
,debits = EXCLUDED.debits
,credits = EXCLUDED.credits
,cbal = EXCLUDED.cbal
,prop = evt.bal.prop || EXCLUDED.prop
RETURNING *
)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
--determine all fiscal periods involved
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
,touched as (
SELECT DISTINCT
fspr
FROM
ins
)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
--update evt.fspr to reflect roll status
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
UPDATE
evt.fspr f
SET
prop = COALESCE(f.prop,'{}'::JSONB) || '{"gltouch":"yes"}'::jsonb
FROM
touched t
WHERE
f.id = t.fspr;
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
--this is to catch up all the other accounts if actually necessary
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
PERFORM evt.balrf();
RETURN NULL;
END;
$func$;
COMMENT ON FUNCTION evt.gl_insert IS 'update evt.bal with new ledger rows';
CREATE TRIGGER gl_insert
AFTER INSERT ON evt.gl
REFERENCING NEW TABLE AS ins
FOR EACH STATEMENT
EXECUTE PROCEDURE evt.gl_insert();