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implement retain flag to drop keys used only for linking to the appropriate map value, but not acutally included in the map

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This commit is contained in:
Paul Trowbridge 2017-10-19 18:02:52 -04:00
parent 9001c44b46
commit ccd685ca22
1 changed files with 6 additions and 4 deletions
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8
do_map.pgsql
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@ -19,7 +19,8 @@ SELECT
ELSE array_to_json(mt.mt)
END
) retval,
m.seq
m.seq,
e.v->>'retain' retain
FROM
tps.map_rm m
LEFT JOIN LATERAL jsonb_array_elements(m.regex->'where') w(v) ON TRUE
@ -48,6 +49,7 @@ agg_rx AS (
rx.id,
tps.jsonb_concat_obj(rx.rkey) rkey,
tps.jsonb_concat_obj(rx.retval) AS retval,
tps.jsonb_concat_obj(CASE rx.retain WHEN 'y' THEN rx.retval ELSE '{}'::jsonb END) retain,
rx.seq
FROM
--unwrap json instruction and apply regex using a count per original line for re-aggregation
@ -63,13 +65,13 @@ agg_rx AS (
-------------aggregate all targets back to row level (id)------------------------------------------------------------------------------------------------
SELECT
u.srce,
u.id,
string_agg(u.target,',') target,
jsonb_pretty(tps.jsonb_concat_obj(coalesce(v.map,'{}'::jsonb) ORDER BY seq )) map,
jsonb_pretty(tps.jsonb_concat_obj(u.retval||coalesce(v.map,'{}'::jsonb) ORDER BY seq)) comb
jsonb_pretty(tps.jsonb_concat_obj(u.retval||coalesce(v.map,'{}'::jsonb) ORDER BY seq)) comb,
jsonb_pretty(tps.jsonb_concat_obj(u.retain||coalesce(v.map,'{}'::jsonb) ORDER BY seq)) retain
FROM
--re-aggregate return values and explude any records where one or more regex failed with a null result
agg_rx u