{
    "id": "mysql142-x-metadata-column-origins",
    "title": "Показать происхождение полей после JOIN",
    "columns": [
        "Наблюдение",
        "Результат"
    ],
    "rows": [
        [
            "Товар",
            "Светильник"
        ],
        [
            "Категория",
            "Освещение"
        ],
        [
            "Цена пары",
            "24.68"
        ],
        [
            "product_name: роль и поле",
            "p.name"
        ],
        [
            "category_name: роль и поле",
            "c.name"
        ],
        [
            "Исходная таблица товара определена",
            true
        ],
        [
            "Исходная таблица категории определена",
            true
        ],
        [
            "Обе прямые колонки из учебной схемы",
            true
        ],
        [
            "pair_price: источник",
            "Вычисление, единого исходного поля нет"
        ]
    ],
    "checks": {
        "joined_row": true,
        "unique_labels": true,
        "table_aliases": true,
        "column_origins": true,
        "physical_tables": true,
        "physical_schema": true,
        "expression_origin_empty": true,
        "owned_objects_removed": true
    },
    "observations": {
        "metadata": [
            {
                "class": "mysql_xdevapi\\ColumnResult",
                "label": "product_name",
                "name": "name",
                "table_label": "p",
                "table_name": "mysql142_products_1fb3f5e4705d",
                "schema": "php_manual_x139",
                "type": 21,
                "length": 160,
                "fractional_digits": 0,
                "signed": false,
                "padded": false,
                "charset": "utf8mb4",
                "collation": "utf8mb4_0900_ai_ci"
            },
            {
                "class": "mysql_xdevapi\\ColumnResult",
                "label": "category_name",
                "name": "name",
                "table_label": "c",
                "table_name": "mysql142_categories_b004cde50fa9",
                "schema": "php_manual_x139",
                "type": 21,
                "length": 160,
                "fractional_digits": 0,
                "signed": false,
                "padded": false,
                "charset": "utf8mb4",
                "collation": "utf8mb4_0900_ai_ci"
            },
            {
                "class": "mysql_xdevapi\\ColumnResult",
                "label": "pair_price",
                "name": "",
                "table_label": "",
                "table_name": "",
                "schema": "",
                "type": 0,
                "length": 13,
                "fractional_digits": 2,
                "signed": true,
                "padded": false,
                "charset": null,
                "collation": null
            }
        ],
        "row": {
            "product_name": "Светильник",
            "category_name": "Освещение",
            "pair_price": "24.68"
        },
        "owned_tables": {
            "p": "mysql142_products_1fb3f5e4705d",
            "c": "mysql142_categories_b004cde50fa9"
        }
    },
    "runtime": {
        "php": "8.3.35",
        "extension": "8.0.30",
        "server_version": 80413,
        "schema": "php_manual_x139",
        "host": "127.0.0.1",
        "port": 33140
    },
    "owned_objects": [
        {
            "type": "TABLE",
            "name": "mysql142_categories_b004cde50fa9"
        },
        {
            "type": "TABLE",
            "name": "mysql142_products_1fb3f5e4705d"
        }
    ],
    "removed_objects": [
        {
            "type": "TABLE",
            "name": "mysql142_products_1fb3f5e4705d"
        },
        {
            "type": "TABLE",
            "name": "mysql142_categories_b004cde50fa9"
        }
    ]
}