{
    "required_tables": [
        {
            "name": "top_kernels",
            "required_columns": [
                "name",
                "total_calls",
                "total_duration",
                "average",
                "percentage"
            ],
            "validation_queries": [
                {
                    "comparison": "equals",
                    "description": "Check for null function names",
                    "error_message": "Found API calls with null function names",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) FROM top_kernels WHERE name IS NULL"
                }
            ]
        },
        {
            "name": "kernels",
            "required_columns": [
                "id",
                "category",
                "name",
                "start",
                "end",
                "queue",
                "stream"
            ],
            "validation_queries": [
                {
                    "comparison": "equals",
                    "description": "Check for null function names",
                    "error_message": "Found kernels with null function names",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) as count FROM kernels WHERE name IS NULL"
                },
                {
                    "comparison": "equals",
                    "description": "Check for kernels with no active time",
                    "error_message": "Kernels with no active execution times found",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) as count FROM kernels WHERE (end - start) = 0"
                }
            ]
        },
        {
            "min_rows": 0,
            "name": "threads",
            "required_columns": [
                "tid",
                "start",
                "end",
                "name"
            ]
        },
        {
            "name": "regions",
            "required_columns": [
                "tid",
                "start",
                "end",
                "name"
            ],
            "validation_queries": [
                {
                    "comparison": "equals",
                    "description": "Verify entries have non-zero start times",
                    "error_message": "Found entries with zero start times in table",
                    "expected_result": 0,
                    "query": "SELECT COUNT(*) as count FROM regions WHERE start = 0"
                }
            ]
        }
    ]
}