endtoend: cover MySQL syntax newly supported by marino v0.3.0

JSON_TABLE in schema files, expression DEFAULTs like (UTC_TIMESTAMP())
and (CURRENT_TIMESTAMP + INTERVAL 30 DAY), and trigger/function/
procedure/event DDL in MySQL schemas.

Author: claude

internal/endtoend/testdata/mysql_ddl_routines/mysql/go/db.go

@@ -0,0 +1,2 @@
+-- name: GetCollection :one
+SELECT id, updated_at FROM collections WHERE id = ?;

internal/endtoend/testdata/mysql_ddl_routines/mysql/go/models.go

@@ -0,0 +1,12 @@
+CREATE TABLE collections (
+  id BIGINT PRIMARY KEY,
+  updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TRIGGER update_timestamp_collections BEFORE UPDATE ON collections FOR EACH ROW SET NEW.updated_at = CURRENT_TIMESTAMP;
+
+CREATE FUNCTION uuidv4() RETURNS CHAR(36) NO SQL RETURN LOWER(HEX(RANDOM_BYTES(4)));
+
+CREATE PROCEDURE touch_collections() UPDATE collections SET updated_at = NOW();
+
+CREATE EVENT clear_stale_collections ON SCHEDULE EVERY 1 HOUR DO DELETE FROM collections WHERE updated_at < CURRENT_TIMESTAMP - INTERVAL 30 DAY;

internal/endtoend/testdata/mysql_ddl_routines/mysql/go/query.sql.go

@@ -0,0 +1,14 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "sql_package": "database/sql",
+      "sql_driver": "github.com/go-sql-driver/mysql",
+      "engine": "mysql",
+      "name": "querytest",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/mysql_ddl_routines/mysql/query.sql

@@ -0,0 +1,2 @@
+-- name: GetExpiration :one
+SELECT id, created_at, expiry FROM expirations WHERE id = ?;