[skip ci] mysql migration quieries

Author: Alexei Pastuchov

wundergraph_cli/src/print_schema/mod.rs

@@ -127,19 +127,28 @@ mod tests {
 
     #[cfg(feature = "mysql")]
     const MIGRATION: &[&str] = &[
-        "CREATE TABLE users(id INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT, name TEXT NOT NULL);",
+        r#"CREATE TABLE users(
+            id INTEGER NOT NULL AUTO_INCREMENT,
+            name TEXT NOT NULL,
+            PRIMARY KEY (`id`)
+        );"#,
         r#"CREATE TABLE posts(
-            id INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,
-            author INTEGER REFERENCES users(id),
+            id INTEGER NOT NULL AUTO_INCREMENT,
+            author INTEGER DEFAULT NULL,
             title TEXT NOT NULL,
-            datetime TIMESTAMP,
-            content TEXT
+            datetime TIMESTAMP NULL DEFAULT NULL,
+            content TEXT,
+            PRIMARY KEY (`id`),
+            FOREIGN KEY (`author`) REFERENCES `users` (`id`)
         );"#,
         r#"CREATE TABLE comments(
-            id INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,
-            post INTEGER REFERENCES posts(id),
-            commenter INTEGER REFERENCES users(id),
-            content TEXT NOT NULL
+            id INTEGER NOT NULL AUTO_INCREMENT,
+            post INTEGER DEFAULT NULL,
+            commenter INTEGER DEFAULT NULL,
+            content TEXT NOT NULL,
+            PRIMARY KEY (`id`),
+            FOREIGN KEY (`post`) REFERENCES `posts` (`id`),
+            FOREIGN KEY (`commenter`) REFERENCES `users` (`id`)
         );"#,
     ];