create class if not exists /xxtest() with namespace="xxtest"
;

create class if not exists /xxtest/vvvv (
    docid     varchar '文档ID',
    doctext   text "文档内容",
    docvec    bucket {
                "dims": 768,
                "similarity": "l2_norm",
                "embedding": "ollama",
                "visible": true,
                "type": "vector"} '文档索引',
)
;