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schema.sql
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113 lines (97 loc) · 3.89 KB
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COMMENT ON SCHEMA "public" IS 'standard public schema';
CREATE TABLE "public"."audit" (
"id" serial,
"operation" text NOT NULL,
"query" text,
"user_name" text NOT NULL,
"changed_at" timestamptz DEFAULT now(),
CONSTRAINT "audit_pkey" PRIMARY KEY (id)
);
CREATE INDEX "idx_audit_changed_at" ON ONLY "public"."audit" (changed_at);
CREATE INDEX "idx_audit_operation" ON ONLY "public"."audit" (operation);
CREATE INDEX "idx_audit_username" ON ONLY "public"."audit" (user_name);
CREATE TABLE "public"."department" (
"dept_no" text NOT NULL,
"dept_name" text NOT NULL,
created_at timestamptz DEFAULT now(),
CONSTRAINT "department_pkey" PRIMARY KEY (dept_no),
CONSTRAINT "department_dept_name_key" UNIQUE (dept_name)
);
CREATE TABLE "public"."dept_emp" (
"emp_no" integer NOT NULL,
"dept_no" text NOT NULL,
"from_date" date NOT NULL,
"to_date" date NOT NULL,
CONSTRAINT "dept_emp_pkey" PRIMARY KEY (emp_no, dept_no),
CONSTRAINT "dept_emp_dept_no_fkey" FOREIGN KEY ("dept_no") REFERENCES "public"."department" ("dept_no") ON DELETE CASCADE,
CONSTRAINT "dept_emp_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE
);
CREATE TABLE "public"."dept_manager" (
"emp_no" integer NOT NULL,
"dept_no" text NOT NULL,
"from_date" date NOT NULL,
"to_date" date NOT NULL,
CONSTRAINT "dept_manager_pkey" PRIMARY KEY (emp_no, dept_no),
CONSTRAINT "dept_manager_dept_no_fkey" FOREIGN KEY ("dept_no") REFERENCES "public"."department" ("dept_no") ON DELETE CASCADE,
CONSTRAINT "dept_manager_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE
);
CREATE TABLE "public"."employee" (
"emp_no" serial,
"birth_date" date NOT NULL,
"first_name" text NOT NULL,
"last_name" text NOT NULL,
"gender" text NOT NULL,
"hire_date" date NOT NULL,
CONSTRAINT "employee_pkey" PRIMARY KEY (emp_no),
CONSTRAINT "employee_gender_check" CHECK (gender = ANY (ARRAY['M'::text, 'F'::text]))
);
CREATE INDEX "idx_employee_hire_date" ON ONLY "public"."employee" (hire_date);
CREATE TABLE "public"."salary" (
"emp_no" integer NOT NULL,
"amount" integer NOT NULL,
"from_date" date NOT NULL,
"to_date" date NOT NULL,
CONSTRAINT "salary_pkey" PRIMARY KEY (emp_no, from_date),
CONSTRAINT "salary_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE
);
CREATE INDEX "idx_salary_amount" ON ONLY "public"."salary" (amount);
CREATE TABLE "public"."title" (
"emp_no" integer NOT NULL,
"title" text NOT NULL,
"from_date" date NOT NULL,
"to_date" date,
CONSTRAINT "title_pkey" PRIMARY KEY (emp_no, title, from_date),
CONSTRAINT "title_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE
);
CREATE VIEW "public"."current_dept_emp" AS SELECT l.emp_no,
d.dept_no,
l.from_date,
l.to_date
FROM (public.dept_emp d
JOIN public.dept_emp_latest_date l ON (((d.emp_no = l.emp_no) AND (d.from_date = l.from_date) AND (l.to_date = d.to_date))));
CREATE VIEW "public"."dept_emp_latest_date" AS SELECT emp_no,
max(from_date) AS from_date,
max(to_date) AS to_date
FROM public.dept_emp
GROUP BY emp_no;
CREATE OR REPLACE FUNCTION public.log_dml_operations()
RETURNS trigger
LANGUAGE plpgsql
AS $function$
BEGIN
IF (TG_OP = 'INSERT') THEN
INSERT INTO audit (operation, query, user_name)
VALUES ('INSERT', current_query(), current_user);
RETURN NEW;
ELSIF (TG_OP = 'UPDATE') THEN
INSERT INTO audit (operation, query, user_name)
VALUES ('UPDATE', current_query(), current_user);
RETURN NEW;
ELSIF (TG_OP = 'DELETE') THEN
INSERT INTO audit (operation, query, user_name)
VALUES ('DELETE', current_query(), current_user);
RETURN OLD;
END IF;
RETURN NULL;
END;
$function$;