switch device

BD_4s/task_from_lection.sql

@@ -0,0 +1,25 @@
+
+INSERT INTO A VALUES
+(1,2),
+(2,3);
+
+INSERT INTO B VALUES
+(1,1),
+(2,3);
+
+INSERT INTO C VALUES
+(1,2,1,1),
+(1,2,2,2),
+(2,3,1,1),
+(1,2,4,5);
+
+
+SELECT a.F1, a.F2 FROM a,b,c
+WHERE a.F1 = c.F1 AND a.F2 = c.F2 AND b.F3 = c.F3 AND b.F4 = c.F4
+GROUP BY a.F1, a.F2 HAVING COUNT (a.F1) = (SELECT COUNT(F3) FROM b);
+
+SELECT F1, F2 FROM C
+    WHERE F3 IN (SELECT F3 FROM B) AND F4 IN (SELECT F4 FROM B)
+    GROUP BY F1, F2 HAVING COUNT(*) = (
+        SELECT COUNT(*) FROM b
+    );

Lab`s/insert.sql

@@ -0,0 +1,19 @@
+-- Воспользуемся транзакцией 
+
+BEGIN;
+
+INSERT INTO Cathegory(cath_name, root_id) VALUES 
+('Breakfast', NULL),
+('Lunch', NULL),
+('Dinner', NULL),
+(),
+(),
+();
+
+INSERT INTO Dish VALUES
+(),
+(), 
+(),
+(),
+(),
+();

Lab`s/lab`s_code.sql

@@ -0,0 +1,209 @@
+-- This script was generated by the ERD tool in pgAdmin 4.
+-- Please log an issue at https://redmine.postgresql.org/projects/pgadmin4/issues/new if you find any bugs, including reproduction steps.
+BEGIN;
+
+DROP TABLE IF EXISTS public."Tech_Dish";
+DROP TABLE IF EXISTS public."Source";
+DROP TABLE IF EXISTS public."Link";
+DROP TABLE IF EXISTS public."Dish";
+DROP TABLE IF EXISTS public."Cathegory";
+
+DROP TABLE IF EXISTS public."Tech";
+
+DROP TABLE IF EXISTS public."Conversion";
+DROP TABLE IF EXISTS public."Alternative Name";
+DROP TABLE IF EXISTS public."Ingredients";
+DROP TABLE IF EXISTS public."Methods";
+
+
+CREATE TABLE IF NOT EXISTS public."Cathegory"
+(
+    cath_id serial,
+    cath_name character varying(20) NOT NULL,
+    root_id integer,
+    PRIMARY KEY (cath_id),
+    CONSTRAINT "Name" UNIQUE (cath_name)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Dish"
+(
+    dish_id serial,
+    cath_id integer NOT NULL,
+    name character varying(20) NOT NULL,
+    cook_time interval NOT NULL,
+    manual text NOT NULL,
+    PRIMARY KEY (dish_id),
+    CONSTRAINT "Name Dish" UNIQUE (name)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Link"
+(
+    dish_id integer,
+    ingr_id integer,
+    method_id integer NOT NULL,
+    amount numeric(10) NOT NULL,
+    PRIMARY KEY (dish_id, ingr_id)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Ingredients"
+(
+    ingr_id serial,
+    ingr_name character varying(20) NOT NULL,
+    ingr_descr text NOT NULL,
+    PRIMARY KEY (ingr_id),
+    CONSTRAINT "Inrg Name" UNIQUE (ingr_name)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Conversion"
+(
+    ingr_id integer,
+    method1_id integer,
+    method2_id integer,
+    transit numeric NOT NULL,
+    PRIMARY KEY (ingr_id, method1_id, method2_id)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Methods"
+(
+    method_id serial,
+    method_name character varying(20) NOT NULL,
+    standart boolean NOT NULL,
+    PRIMARY KEY (method_id),
+    UNIQUE (method_name)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Source"
+(
+    dish_id integer,
+    picture serial NOT NULL,
+    PRIMARY KEY (dish_id)
+);
+
+
+CREATE TABLE IF NOT EXISTS public."Tech"
+(
+    tech_id serial,
+    tech_name character varying(20) NOT NULL,
+    PRIMARY KEY (tech_id),
+    CONSTRAINT "Name Tech" UNIQUE (tech_name)
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Tech_Dish"
+(
+    "Tech_tech_id" integer,
+    "Dish_dish_id" integer,
+    PRIMARY KEY ("Tech_tech_id", "Dish_dish_id")
+);
+
+
+
+CREATE TABLE IF NOT EXISTS public."Alternative Name"
+(
+    ingr_id integer,
+    alt_name character varying(20) NOT NULL,
+    PRIMARY KEY (ingr_id),
+    CONSTRAINT "Alt Name" UNIQUE (alt_name)
+);
+
+ALTER TABLE IF EXISTS public."Cathegory"
+    ADD FOREIGN KEY (root_id)
+    REFERENCES public."Cathegory" (cath_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Dish"
+    ADD FOREIGN KEY (cath_id)
+    REFERENCES public."Cathegory" (cath_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Link"
+    ADD FOREIGN KEY (ingr_id)
+    REFERENCES public."Ingredients" (ingr_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Link"
+    ADD FOREIGN KEY (dish_id)
+    REFERENCES public."Dish" (dish_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Conversion"
+    ADD FOREIGN KEY (method1_id)
+    REFERENCES public."Methods" (method_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Conversion"
+    ADD FOREIGN KEY (ingr_id)
+    REFERENCES public."Ingredients" (ingr_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Conversion"
+    ADD FOREIGN KEY (method2_id)
+    REFERENCES public."Methods" (method_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Source"
+    ADD FOREIGN KEY (dish_id)
+    REFERENCES public."Dish" (dish_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Tech_Dish"
+    ADD FOREIGN KEY ("Tech_tech_id")
+    REFERENCES public."Tech" (tech_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Tech_Dish"
+    ADD FOREIGN KEY ("Dish_dish_id")
+    REFERENCES public."Dish" (dish_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+
+ALTER TABLE IF EXISTS public."Alternative Name"
+    ADD FOREIGN KEY (ingr_id)
+    REFERENCES public."Ingredients" (ingr_id) MATCH SIMPLE
+    ON UPDATE NO ACTION
+    ON DELETE NO ACTION
+    NOT VALID;
+
+END;