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1 | | -CREATE TABLE public.employee ( |
2 | | - emp_no SERIAL NOT NULL, |
3 | | - birth_date DATE NOT NULL, |
4 | | - first_name TEXT NOT NULL, |
5 | | - last_name TEXT NOT NULL, |
6 | | - gender TEXT NOT NULL CHECK (gender IN('M', 'F')) NOT NULL, |
7 | | - hire_date DATE NOT NULL, |
8 | | - PRIMARY KEY (emp_no) |
| 1 | +COMMENT ON SCHEMA "public" IS 'standard public schema'; |
| 2 | + |
| 3 | +CREATE TABLE "public"."audit" ( |
| 4 | + "id" serial, |
| 5 | + "operation" text NOT NULL, |
| 6 | + "query" text, |
| 7 | + "user_name" text NOT NULL, |
| 8 | + "changed_at" timestamp(6) with time zone DEFAULT CURRENT_TIMESTAMP, |
| 9 | + CONSTRAINT "audit_pkey" PRIMARY KEY (id) |
9 | 10 | ); |
10 | 11 |
|
11 | | -CREATE INDEX idx_employee_hire_date ON public.employee (hire_date); |
| 12 | +CREATE INDEX "idx_audit_changed_at" ON ONLY "public"."audit" (changed_at); |
| 13 | + |
| 14 | +CREATE INDEX "idx_audit_operation" ON ONLY "public"."audit" (operation); |
| 15 | + |
| 16 | +CREATE INDEX "idx_audit_username" ON ONLY "public"."audit" (user_name); |
| 17 | + |
| 18 | +CREATE TABLE "public"."department" ( |
| 19 | + "dept_no" text NOT NULL, |
| 20 | + "dept_name" text NOT NULL, |
| 21 | + CONSTRAINT "department_pkey" PRIMARY KEY (dept_no), |
| 22 | + CONSTRAINT "department_dept_name_key" UNIQUE (dept_name) |
| 23 | +); |
12 | 24 |
|
13 | | -CREATE TABLE public.department ( |
14 | | - dept_no TEXT NOT NULL, |
15 | | - dept_name TEXT NOT NULL, |
16 | | - PRIMARY KEY (dept_no), |
17 | | - UNIQUE (dept_name) |
| 25 | +CREATE TABLE "public"."dept_emp" ( |
| 26 | + "emp_no" integer NOT NULL, |
| 27 | + "dept_no" text NOT NULL, |
| 28 | + "from_date" date NOT NULL, |
| 29 | + "to_date" date NOT NULL, |
| 30 | + CONSTRAINT "dept_emp_pkey" PRIMARY KEY (emp_no, dept_no), |
| 31 | + CONSTRAINT "dept_emp_dept_no_fkey" FOREIGN KEY ("dept_no") REFERENCES "public"."department" ("dept_no") ON DELETE CASCADE, |
| 32 | + CONSTRAINT "dept_emp_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE |
18 | 33 | ); |
19 | 34 |
|
20 | | -CREATE TABLE public.dept_manager ( |
21 | | - emp_no INT NOT NULL, |
22 | | - dept_no TEXT NOT NULL, |
23 | | - from_date DATE NOT NULL, |
24 | | - to_date DATE NOT NULL, |
25 | | - FOREIGN KEY (emp_no) REFERENCES employee (emp_no) ON DELETE CASCADE, |
26 | | - FOREIGN KEY (dept_no) REFERENCES department (dept_no) ON DELETE CASCADE, |
27 | | - PRIMARY KEY (emp_no, dept_no) |
| 35 | +CREATE TABLE "public"."dept_manager" ( |
| 36 | + "emp_no" integer NOT NULL, |
| 37 | + "dept_no" text NOT NULL, |
| 38 | + "from_date" date NOT NULL, |
| 39 | + "to_date" date NOT NULL, |
| 40 | + CONSTRAINT "dept_manager_pkey" PRIMARY KEY (emp_no, dept_no), |
| 41 | + CONSTRAINT "dept_manager_dept_no_fkey" FOREIGN KEY ("dept_no") REFERENCES "public"."department" ("dept_no") ON DELETE CASCADE, |
| 42 | + CONSTRAINT "dept_manager_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE |
28 | 43 | ); |
29 | 44 |
|
30 | | -CREATE TABLE public.dept_emp ( |
31 | | - emp_no INT NOT NULL, |
32 | | - dept_no TEXT NOT NULL, |
33 | | - from_date DATE NOT NULL, |
34 | | - to_date DATE NOT NULL, |
35 | | - FOREIGN KEY (emp_no) REFERENCES employee (emp_no) ON DELETE CASCADE, |
36 | | - FOREIGN KEY (dept_no) REFERENCES department (dept_no) ON DELETE CASCADE, |
37 | | - PRIMARY KEY (emp_no, dept_no) |
| 45 | +CREATE TABLE "public"."employee" ( |
| 46 | + "emp_no" serial, |
| 47 | + "birth_date" date NOT NULL, |
| 48 | + "first_name" text NOT NULL, |
| 49 | + "last_name" text NOT NULL, |
| 50 | + "gender" text NOT NULL, |
| 51 | + "hire_date" date NOT NULL, |
| 52 | + CONSTRAINT "employee_pkey" PRIMARY KEY (emp_no), |
| 53 | + CONSTRAINT "employee_gender_check" CHECK (gender = ANY (ARRAY['M'::text, 'F'::text])) |
38 | 54 | ); |
39 | 55 |
|
40 | | -CREATE TABLE public.title ( |
41 | | - emp_no INT NOT NULL, |
42 | | - title TEXT NOT NULL, |
43 | | - from_date DATE NOT NULL, |
44 | | - to_date DATE, |
45 | | - FOREIGN KEY (emp_no) REFERENCES employee (emp_no) ON DELETE CASCADE, |
46 | | - PRIMARY KEY (emp_no, title, from_date) |
47 | | -); |
48 | | - |
49 | | -CREATE TABLE public.salary ( |
50 | | - emp_no INT NOT NULL, |
51 | | - amount INT NOT NULL, |
52 | | - from_date DATE NOT NULL, |
53 | | - to_date DATE NOT NULL, |
54 | | - FOREIGN KEY (emp_no) REFERENCES employee (emp_no) ON DELETE CASCADE, |
55 | | - PRIMARY KEY (emp_no, from_date) |
| 56 | +CREATE INDEX "idx_employee_hire_date" ON ONLY "public"."employee" (hire_date); |
| 57 | + |
| 58 | +CREATE TABLE "public"."salary" ( |
| 59 | + "emp_no" integer NOT NULL, |
| 60 | + "amount" integer NOT NULL, |
| 61 | + "from_date" date NOT NULL, |
| 62 | + "to_date" date NOT NULL, |
| 63 | + CONSTRAINT "salary_pkey" PRIMARY KEY (emp_no, from_date), |
| 64 | + CONSTRAINT "salary_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE |
56 | 65 | ); |
57 | 66 |
|
58 | | -CREATE INDEX idx_salary_amount ON public.salary (amount); |
| 67 | +CREATE INDEX "idx_salary_amount" ON ONLY "public"."salary" (amount); |
59 | 68 |
|
60 | | -CREATE TABLE public.audit ( |
61 | | - id SERIAL PRIMARY KEY, |
62 | | - operation TEXT NOT NULL, |
63 | | - query TEXT, |
64 | | - user_name TEXT NOT NULL, |
65 | | - changed_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP |
| 69 | +CREATE TABLE "public"."title" ( |
| 70 | + "emp_no" integer NOT NULL, |
| 71 | + "title" text NOT NULL, |
| 72 | + "from_date" date NOT NULL, |
| 73 | + "to_date" date, |
| 74 | + CONSTRAINT "title_pkey" PRIMARY KEY (emp_no, title, from_date), |
| 75 | + CONSTRAINT "title_emp_no_fkey" FOREIGN KEY ("emp_no") REFERENCES "public"."employee" ("emp_no") ON DELETE CASCADE |
66 | 76 | ); |
67 | 77 |
|
68 | | -CREATE INDEX idx_audit_operation ON public.audit (operation); |
69 | | -CREATE INDEX idx_audit_username ON public.audit (user_name); |
70 | | -CREATE INDEX idx_audit_changed_at ON public.audit (changed_at); |
| 78 | +CREATE VIEW "public"."current_dept_emp" AS SELECT l.emp_no, |
| 79 | + d.dept_no, |
| 80 | + l.from_date, |
| 81 | + l.to_date |
| 82 | + FROM (public.dept_emp d |
| 83 | + 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)))); |
71 | 84 |
|
72 | | -CREATE OR REPLACE FUNCTION public.log_dml_operations() RETURNS TRIGGER AS $$ |
| 85 | +CREATE VIEW "public"."dept_emp_latest_date" AS SELECT emp_no, |
| 86 | + max(from_date) AS from_date, |
| 87 | + max(to_date) AS to_date |
| 88 | + FROM public.dept_emp |
| 89 | + GROUP BY emp_no; |
| 90 | + |
| 91 | +CREATE OR REPLACE FUNCTION public.log_dml_operations() |
| 92 | + RETURNS trigger |
| 93 | + LANGUAGE plpgsql |
| 94 | +AS $function$ |
73 | 95 | BEGIN |
74 | 96 | IF (TG_OP = 'INSERT') THEN |
75 | | - INSERT INTO public.audit (operation, query, user_name) |
| 97 | + INSERT INTO audit (operation, query, user_name) |
76 | 98 | VALUES ('INSERT', current_query(), current_user); |
77 | 99 | RETURN NEW; |
78 | 100 | ELSIF (TG_OP = 'UPDATE') THEN |
79 | | - INSERT INTO public.audit (operation, query, user_name) |
| 101 | + INSERT INTO audit (operation, query, user_name) |
80 | 102 | VALUES ('UPDATE', current_query(), current_user); |
81 | 103 | RETURN NEW; |
82 | 104 | ELSIF (TG_OP = 'DELETE') THEN |
83 | | - INSERT INTO public.audit (operation, query, user_name) |
| 105 | + INSERT INTO audit (operation, query, user_name) |
84 | 106 | VALUES ('DELETE', current_query(), current_user); |
85 | 107 | RETURN OLD; |
86 | 108 | END IF; |
87 | 109 | RETURN NULL; |
88 | 110 | END; |
89 | | -$$ LANGUAGE plpgsql; |
90 | | - |
91 | | --- only log update and delete, otherwise, it will cause too much change. |
92 | | -CREATE TRIGGER salary_log_trigger |
93 | | -AFTER UPDATE OR DELETE ON public.salary |
94 | | -FOR EACH ROW |
95 | | -EXECUTE FUNCTION public.log_dml_operations(); |
96 | | - |
97 | | -CREATE OR REPLACE VIEW public.dept_emp_latest_date AS |
98 | | -SELECT |
99 | | - emp_no, |
100 | | - MAX( |
101 | | - from_date) AS from_date, |
102 | | - MAX( |
103 | | - to_date) AS to_date |
104 | | -FROM |
105 | | - public.dept_emp |
106 | | -GROUP BY |
107 | | - emp_no; |
108 | | - |
109 | | --- shows only the current department for each employee |
110 | | -CREATE OR REPLACE VIEW public.current_dept_emp AS |
111 | | -SELECT |
112 | | - l.emp_no, |
113 | | - dept_no, |
114 | | - l.from_date, |
115 | | - l.to_date |
116 | | -FROM |
117 | | - public.dept_emp d |
118 | | - INNER JOIN public.dept_emp_latest_date l ON d.emp_no = l.emp_no |
119 | | - AND d.from_date = l.from_date |
120 | | - AND l.to_date = d.to_date; |
| 111 | +$function$; |
| 112 | + |
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