57 lines
2.3 KiB
SQL
57 lines
2.3 KiB
SQL
-- =============================================================
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-- V073 – číselník PV telemetrie + FK na asset_pv_array.telemetry_source
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--
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-- Cíl: referenční integrita pro telemetry_source (povolené kódy),
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-- aby se zabránilo překlepům a nekonzistentním datům.
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-- =============================================================
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create table if not exists ems.pv_telemetry_source_def (
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code text primary key,
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description text not null,
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telemetry_inverter_expr text null,
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active boolean not null default true
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);
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comment on table ems.pv_telemetry_source_def is
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'Číselník zdrojů PV telemetrie (kanálů) pro asset_pv_array.telemetry_source.';
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comment on column ems.pv_telemetry_source_def.code is
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'Stabilní kód zdroje telemetrie (FK z asset_pv_array.telemetry_source).';
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comment on column ems.pv_telemetry_source_def.telemetry_inverter_expr is
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'Volitelně: lidsky čitelný výraz, jak se kanál počítá z telemetry_inverter (informativní; runtime logika je v routines).';
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insert into ems.pv_telemetry_source_def (code, description, telemetry_inverter_expr) values
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('gen_port', 'AC-coupled výroba na GEN portu (souhrn).', 'gen_port_power_w'),
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('pv1', 'DC string/MPPT 1 (samostatně).', 'pv1_power_w'),
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('pv2', 'DC string/MPPT 2 (samostatně).', 'pv2_power_w'),
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('pv_strings', 'Součet DC stringů (pv1+pv2).', 'pv1_power_w + pv2_power_w'),
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('pv_total', 'Souhrnná PV výroba (pokud nelze rozlišit).','pv_power_w')
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on conflict (code) do update
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set description = excluded.description,
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telemetry_inverter_expr = excluded.telemetry_inverter_expr,
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active = true;
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-- FK (idempotentně): NULL povolen (pole bez přímé telemetrie / fallback na forecast).
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do $$
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begin
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if not exists (
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select 1
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from pg_constraint c
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join pg_class t on t.oid = c.conrelid
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join pg_namespace n on n.oid = t.relnamespace
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where n.nspname = 'ems'
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and t.relname = 'asset_pv_array'
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and c.conname = 'asset_pv_array_telemetry_source_fk'
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) then
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alter table ems.asset_pv_array
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add constraint asset_pv_array_telemetry_source_fk
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foreign key (telemetry_source)
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references ems.pv_telemetry_source_def(code)
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on update cascade
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on delete restrict;
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end if;
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end;
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$$;
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