50 lines
No EOL
1.2 KiB
SQL
50 lines
No EOL
1.2 KiB
SQL
-- Drop table
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-- DROP TABLE public.currency
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CREATE TABLE public.currency (
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id serial NOT NULL,
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cr_code_iso varchar(10) NULL,
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CONSTRAINT currency_pk PRIMARY KEY (id),
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CONSTRAINT currency_un UNIQUE (cr_code_iso)
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);
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-- Drop table
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-- DROP TABLE public.currency_history
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CREATE TABLE public.currency_history (
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id serial NOT NULL,
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ch_value numeric(20,6) NOT NULL,
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ch_from date NOT NULL,
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currency_id int4 NOT NULL,
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CONSTRAINT currency_history_pk PRIMARY KEY (id),
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CONSTRAINT currency_history_currency_fk FOREIGN KEY (currency_id) REFERENCES currency(id)
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ON DELETE RESTRICT ON UPDATE CASCADE
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)
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;
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-- Ajouter commentaire sur colonne
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ALTER TABLE public.currency ADD cr_name varchar(80) NULL;
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-- Create view to manage the table
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create view v_currency_last_value as
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with recent_rate as
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( select
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currency_id,max(ch_from) as rc_from
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from
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currency_history
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group by currency_id
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)
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select
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cr1.id as currency_id,
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cr1.cr_name,
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cr1.cr_code_iso,
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ch1.id as currency_history_id,
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ch1.ch_value as ch_value,
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to_char(rc_from,'DD.MM.YYYY') as str_from
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from
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currency as cr1
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join recent_rate on (currency_id=cr1.id)
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join currency_history as ch1 on (recent_rate.currency_id=ch1.currency_id and rc_from=ch1.ch_from); |