Tests

Fixture tests

dialects/postgresql/src/testFixtures/resources/fixtures_postgresql/lateral/Test.s

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+CREATE TABLE A (
+  b_id INTEGER
+);
+
+CREATE TABLE B (
+  id INTEGER
+);
+
+SELECT * FROM A, LATERAL (SELECT * FROM B WHERE B.id = A.b_id) AB;
+
+CREATE TABLE Author (
+  id INTEGER PRIMARY KEY,
+  name TEXT
+);
+
+CREATE TABLE Genre (
+  id INTEGER PRIMARY KEY,
+  name TEXT
+);
+
+CREATE TABLE Book (
+  id INTEGER PRIMARY KEY,
+  title TEXT,
+  author_id INTEGER REFERENCES Author(id),
+  genre_id INTEGER REFERENCES Genre(id)
+);
+
+SELECT
+  Author.name AS author_name,
+  Genre.name AS genre_name,
+  book_count
+FROM
+  Author,
+  Genre,
+  LATERAL (
+    SELECT
+      COUNT(*) AS book_count
+    FROM
+      Book
+    WHERE
+      Book.author_id = Author.id
+      AND Book.genre_id = Genre.id
+  ) AS book_counts;
+
+CREATE TABLE Kickstarter_Data (
+    pledged INTEGER,
+    fx_rate NUMERIC,
+    backers_count INTEGER,
+    launched_at NUMERIC,
+    deadline NUMERIC,
+    goal INTEGER
+);
+
+SELECT
+    pledged_usd,
+    avg_pledge_usd,
+    duration,
+    (usd_from_goal / duration) AS usd_needed_daily
+FROM Kickstarter_Data,
+    LATERAL (SELECT pledged / fx_rate AS pledged_usd) pu,
+    LATERAL (SELECT pledged_usd / backers_count AS avg_pledge_usd) apu,
+    LATERAL (SELECT goal / fx_rate AS goal_usd) gu,
+    LATERAL (SELECT goal_usd - pledged_usd AS usd_from_goal) ufg,
+    LATERAL (SELECT (deadline - launched_at) / 86400.00 AS duration) dr;
+
+CREATE TABLE Regions (
+  id INTEGER,
+  name VARCHAR(255)
+);
+
+CREATE TABLE SalesPeople (
+  id INTEGER,
+  full_name VARCHAR(255),
+  home_region_id INTEGER
+);
+
+CREATE TABLE Sales (
+  id INTEGER,
+  amount NUMERIC,
+  product_id INTEGER,
+  salesperson_id INTEGER,
+  region_id INTEGER
+);
+
+SELECT
+  sp.id salesperson_id,
+  sp.full_name,
+  sp.home_region_id,
+  rg.name AS home_region_name,
+  home_region_sales.total_sales
+FROM SalesPeople sp
+  JOIN Regions rg ON sp.home_region_id = rg.id
+  JOIN LATERAL (
+    SELECT SUM(amount) AS total_sales
+    FROM Sales s
+    WHERE s.salesperson_id = sp.id
+      AND s.region_id = sp.home_region_id
+  ) home_region_sales ON TRUE;