tps/database/interface/source_maint/srce_build_view.sql
2018-06-25 00:01:05 -04:00

32 lines
885 B
PL/PgSQL

DROP FUNCTION IF EXISTS tps.build_srce_view_sql(text, text);
CREATE OR REPLACE FUNCTION tps.build_srce_view_sql(_srce text, _schema text) RETURNS TEXT
AS
$f$
DECLARE
--_schema text;
_path text[];
--_srce text;
_sql text;
BEGIN
--_schema:= 'default';
_path:= ARRAY['schemas',_schema]::text[];
--_srce:= 'dcard';
SELECT
'DROP VIEW IF EXISTS tpsv.'||_srce||'_'||_path[2]||'; CREATE VIEW tpsv.'||_srce||'_'||_path[2]||' AS SELECT id, logid, allj, '||string_agg('(allj#>>'''||r.PATH::text||''')::'||r.type||' AS "'||r.column_name||'"',', ')||' FROM tps.trans WHERE srce = '''||_srce||''';'
INTO
_sql
FROM
tps.srce
JOIN LATERAL jsonb_array_elements(defn#>_path) ae(v) ON TRUE
JOIN LATERAL jsonb_to_record (ae.v) AS r(PATH text[], "type" text, column_name text) ON TRUE
WHERE
srce = _srce
GROUP BY
srce.srce;
RETURN _sql;
RAISE NOTICE '%',_sql;
END
$f$
LANGUAGE plpgsql;