PRAGMA foreign_keys = ON;

PRAGMA writable_schema = 1;
DELETE FROM sqlite_master WHERE type IN ("table", "index", "trigger");
PRAGMA writable_schema = 0;
VACUUM;

CREATE TABLE "Examination" (
"ID" INT,
"Examination Date" DATE,
FOREIGN KEY ("ID") REFERENCES "Patient"("ID")
);

CREATE TABLE "Laboratory" (
"ID" INT,
"Date" DATE,
"SSA" TEXT,
PRIMARY KEY ("ID", "Date"),
FOREIGN KEY ("ID") REFERENCES "Patient"("ID")
);

CREATE TABLE "Patient" (
"ID" INT UNIQUE,
"First Date" DATE,
PRIMARY KEY ("ID")
);



INSERT INTO "Patient" VALUES ("1", "2023-01-05");
INSERT INTO "Patient" VALUES ("2", "2023-01-01");
INSERT INTO "Patient" VALUES ("3", "2023-01-10");
INSERT INTO "Patient" VALUES ("4", "2023-01-03");
INSERT INTO "Patient" VALUES ("5", "2023-01-07");
INSERT INTO "Patient" VALUES ("6", "2023-01-02");
INSERT INTO "Laboratory" VALUES ("1", "2023-01-05", "negative");
INSERT INTO "Laboratory" VALUES ("2", "2023-01-01", "positive");
INSERT INTO "Laboratory" VALUES ("3", "2023-01-10", "0");
INSERT INTO "Laboratory" VALUES ("4", "2023-01-03", "weakly positive");
INSERT INTO "Laboratory" VALUES ("5", "2023-01-07", "negative");
INSERT INTO "Laboratory" VALUES ("6", "2023-01-02", "positive");
INSERT INTO "Laboratory" VALUES ("2", "2023-01-15", "negative");
INSERT INTO "Laboratory" VALUES ("4", "2023-01-20", "0");
INSERT INTO "Examination" VALUES ("1", "2023-01-05");
INSERT INTO "Examination" VALUES ("2", "2023-01-01");
INSERT INTO "Examination" VALUES ("3", "2023-01-10");
INSERT INTO "Examination" VALUES ("4", "2023-01-03");
INSERT INTO "Examination" VALUES ("5", "2023-01-07");
INSERT INTO "Examination" VALUES ("6", "2023-01-02");