50 lines
1.1 KiB
Markdown
50 lines
1.1 KiB
Markdown
To extract aggregate definitions can select from `pg_aggregate`
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SQL for current aggregates I'm using now:
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```
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CREATE OR REPLACE FUNCTION public.jsonb_concat(
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state jsonb,
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concat jsonb)
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RETURNS jsonb AS
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$BODY$
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BEGIN
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--RAISE notice 'state is %', state;
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--RAISE notice 'concat is %', concat;
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RETURN state || concat;
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END;
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$BODY$
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LANGUAGE plpgsql VOLATILE
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COST 100;
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CREATE OR REPLACE FUNCTION public.jsonb_concat_distinct_arr(
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state jsonb,
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concat jsonb)
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RETURNS jsonb AS
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$BODY$
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BEGIN
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--RAISE notice 'state is %', state;
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--RAISE notice 'concat is %', concat;
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RETURN SELECT jsonb_agg(state || concat;
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END;
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$BODY$
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LANGUAGE plpgsql VOLATILE
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COST 100;
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DROP AGGREGATE IF EXISTS public.jsonb_arr_aggc(jsonb);
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CREATE AGGREGATE public.jsonb_arr_aggc(jsonb) (
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SFUNC=public.jsonb_concat,
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STYPE=jsonb,
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INITCOND='[]'
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);
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DROP AGGREGATE IF EXISTS public.jsonb_obj_aggc(jsonb);
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CREATE AGGREGATE public.jsonb_obj_aggc(jsonb) (
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SFUNC=public.jsonb_concat,
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STYPE=jsonb,
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INITCOND='{}'
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);
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```
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