{
    "summary": [
        {
            "name": "rag_document_chunks",
            "title": "文档分片",
            "primary": [
                "id"
            ]
        }
    ],
    "fields": [
        {
            "name": "id",
            "title": "ID",
            "type": "str",
            "length": 32,
            "nullable": "no"
        },
        {
            "name": "doc_id",
            "title": "文档ID",
            "type": "str",
            "length": 32,
            "nullable": "yes"
        },
        {
            "name": "kb_id",
            "title": "知识库ID",
            "type": "str",
            "length": 32,
            "nullable": "yes"
        },
        {
            "name": "chunk_index",
            "title": "分片序号",
            "type": "int",
            "nullable": "yes"
        },
        {
            "name": "chunk_type",
            "title": "分片类型",
            "type": "str",
            "length": 32,
            "nullable": "yes"
        },
        {
            "name": "content",
            "title": "文本内容",
            "type": "text",
            "nullable": "yes"
        },
        {
            "name": "description",
            "title": "描述",
            "type": "text",
            "nullable": "yes"
        },
        {
            "name": "vector_id",
            "title": "向量库ID",
            "type": "str",
            "length": 128,
            "nullable": "yes"
        },
        {
            "name": "start_offset",
            "title": "起始偏移",
            "type": "int",
            "nullable": "yes"
        },
        {
            "name": "end_offset",
            "title": "结束偏移",
            "type": "int",
            "nullable": "yes"
        },
        {
            "name": "time_start",
            "title": "时间起始(秒)",
            "type": "double",
            "length": 10,
            "dec": 3,
            "nullable": "yes"
        },
        {
            "name": "time_end",
            "title": "时间结束(秒)",
            "type": "double",
            "length": 10,
            "dec": 3,
            "nullable": "yes"
        },
        {
            "name": "metadata",
            "title": "元数据JSON",
            "type": "text",
            "nullable": "yes"
        },
        {
            "name": "created_at",
            "title": "创建时间",
            "type": "datetime",
            "nullable": "yes"
        }
    ],
    "indexes": [
        {
            "name": "idx_chunk_doc",
            "idxtype": "index",
            "idxfields": [
                "doc_id"
            ]
        },
        {
            "name": "idx_chunk_kb",
            "idxtype": "index",
            "idxfields": [
                "kb_id"
            ]
        },
        {
            "name": "idx_chunk_vector",
            "idxtype": "index",
            "idxfields": [
                "vector_id"
            ]
        }
    ]
}