{
    "required_tables": [
        {
            "name": "rocpd_string",
            "required_columns": [
                "id",
                "guid",
                "string"
            ],
            "validation_queries": [
                {
                    "comparison": "greater_than",
                    "description": "Check if 'timer sampling' exists in string entries",
                    "error_message": "'timer sampling' string not found in rocpd_string",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) FROM rocpd_string WHERE string LIKE '%timer_sampling%';"
                },
                {
                    "comparison": "equals",
                    "description": "Verify no empty string values",
                    "error_message": "Empty or NULL string entries found in view_rocpd_string",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) FROM rocpd_string WHERE string IS NULL OR TRIM(string) = '';"
                }
            ]
        },
        {
            "name": "rocpd_sample",
            "required_columns": [
                "id",
                "guid",
                "track_id",
                "timestamp",
                "event_id"
            ],
            "validation_queries": [
                {
                    "comparison": "greater_than",
                    "description": "Check that ROCpd contains more than 1000 timer_sampling samples",
                    "error_message": "Less than 1001 'timer_sampling' entries found in rocpd_sample",
                    "expected_result": 1000,
                    "query": "SELECT COUNT(*) FROM rocpd_sample R INNER JOIN rocpd_event E ON E.id = R.event_id AND E.guid = R.guid INNER JOIN rocpd_string S ON S.id = E.category_id AND S.guid = E.guid WHERE S.string = 'timer_sampling';"
                },
                {
                    "comparison": "equals",
                    "description": "Verify no NULL or empty values in guid column",
                    "error_message": "NULL or empty guid values found in rocpd_sample",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) FROM rocpd_sample WHERE guid IS NULL OR TRIM(guid) = '';"
                }
            ]
        }
    ]
}