test: Add test cases for returning (#1737)

The goal is to add a place for SQLite tests

Author: kyleconroy

internal/endtoend/testdata/returning/postgresql/pgx/go/db.go

@@ -0,0 +1,11 @@
+-- name: InsertUser :one
+INSERT INTO users (name) VALUES ($1) RETURNING id;
+
+-- name: UpdateUser :one
+UPDATE users SET name = $1
+  RETURNING id;
+
+-- name: DeleteUser :one
+DELETE FROM users
+  WHERE name = $1
+  RETURNING id;

internal/endtoend/testdata/returning/postgresql/pgx/go/models.go

@@ -0,0 +1 @@
+CREATE TABLE users (name text, id serial primary key);

internal/endtoend/testdata/returning/postgresql/pgx/go/query.sql.go

@@ -0,0 +1,13 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "engine": "postgresql",
+      "sql_package": "pgx/v4",
+      "name": "querytest",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/returning/postgresql/pgx/query.sql

@@ -0,0 +1,11 @@
+-- name: InsertUser :one
+INSERT INTO users (name) VALUES ($1) RETURNING id;
+
+-- name: UpdateUser :one
+UPDATE users SET name = $1
+  RETURNING id;
+
+-- name: DeleteUser :one
+DELETE FROM users
+  WHERE name = $1
+  RETURNING id;