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mnoskov/greenplum/Пет проект DWH/Step_1_project_Initialization.sql

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+-- 1
+CREATE SCHEMA raw;
+CREATE SCHEMA core;
+CREATE SCHEMA dm;
+
+-- 2
+--DROP TABLE IF EXISTS raw.users;
+CREATE TABLE raw.users (
+	id bigint NOT NULL,
+	name varchar(100),
+	age SMALLINT,
+	email varchar(100),
+	registration_date timestamptz
+);
+
+--DROP TABLE IF EXISTS raw.courses;
+CREATE TABLE raw.courses (
+	id bigint NOT NULL,
+	title varchar(150),
+	category varchar(50),
+	created_at timestamptz
+);
+
+--DROP TABLE IF EXISTS raw.lessons;
+CREATE TABLE raw.lessons (
+	id bigint NOT NULL,
+	course_id bigint,
+	title varchar(150),
+	duration_min SMALLINT
+);
+
+--DROP TABLE IF EXISTS raw.enrollments;
+CREATE TABLE raw.enrollments (
+	id bigint NOT NULL,
+	user_id bigint,
+	course_id bigint,
+	enrolled_at timestamptz
+);
+
+--DROP TABLE IF EXISTS raw.lesson_views;
+CREATE TABLE raw.lesson_views (
+	id bigint NOT NULL,
+	user_id bigint,
+	lesson_id bigint,
+	viewed_at timestamptz
+);