Elasticsearch<\/code>\u57fa\u7840\u54e6\uff0c\u672c\u6587\u6df1\u5ea6\u6709\uff0c\u4f46\u662f\u4e0d\u6df1<\/p>\n\u6982\u8ff0<\/h2>\n
Elasticsearch\u4e2dJoin<\/code>\u6570\u636e\u7c7b\u578b\u7684\u5b57\u6bb5\u76f8\u4fe1\u5927\u5bb6\u4e5f\u90fd\u7528\u8fc7\uff0c\u4e5f\u5c31\u662f\u53e3\u4e2d\u5e38\u8c08\u7684\u7236\u5b50\u6587\u6863\u3002\u5728Elasticsearch\u4e2dJoin<\/code>\u4e0d\u80fd\u8de8\u7d22\u5f15\u548c\u5206\u7247\uff0c\u6240\u4ee5\u4fdd\u5b58\u6587\u6863\u4fe1\u606f\u65f6\u8981\u4fdd\u8bc1\u7236\u5b50\u6587\u6863\u4f7f\u7528\u76f8\u540c\u7684\u8def\u7531\u53c2\u6570<\/strong>\u6765\u4fdd\u8bc1\u7236\u6587\u6863\u4e0e\u5b50\u6587\u6863\u4fdd\u5b58\u5728\u540c\u4e00\u4e2a\u7d22\u5f15\u7684\u540c\u4e00\u4e2a\u5206\u7247\uff0c\u90a3\u4e48\u90fd\u6709\u54ea\u4e9b\u9650\u5236\u5462\uff1f<\/p>\n\u7236\u5b50\u5173\u7cfb\u7684\u9650\u5236<\/h2>\n\n- \u6bcf\u4e2a\u7d22\u5f15\u4e2d\u53ea\u80fd\u6709\u4e00\u4e2a\u5173\u7cfb\u5b57\u6bb5<\/li>\n
- \u7236\u6587\u6863\u4e0e\u5b50\u6587\u6863\u5fc5\u987b\u5728\u540c\u4e00\u4e2a\u7d22\u5f15\u5206\u7247\u4e2d\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u5bf9\u7236\u5b50\u6587\u6863\u589e\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u65f6\u8981\u8bbe\u7f6e\u8def\u7531\u503c\uff0c\u4fdd\u8bc1\u6570\u636e\u90fd\u5728\u540c\u4e00\u5206\u7247<\/li>\n
- \u4e00\u4e2a\u7236\u6587\u6863\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u5b50\u6587\u6863\uff0c\u4f46\u662f\u4e00\u4e2a\u5b50\u6587\u6863\u53ea\u80fd\u6709\u4e00\u4e2a\u7236\u6587\u6863<\/li>\n
- \u53ea\u80fd\u5728
Join<\/code>\u7c7b\u578b\u7684\u5b57\u6bb5\u4e0a\u5efa\u7acb\u5173\u7cfb<\/li>\n- \u5728\u4fdd\u8bc1\u5f53\u524d\u6587\u6863\u662f\u7236\u6587\u6863\u7684\u524d\u63d0\u4e0b\u53ef\u4ee5\u589e\u52a0\u5b50\u6587\u6863<\/li>\n<\/ul>\n
Global ordinals<\/h2>\n
\u7ffb\u8bd1\u8fc7\u6765\u5c31\u662f\u5168\u5c40\u5e8f\u6570\u3002\u4ec0\u4e48\u662f\u5168\u5c40\u5e8f\u6570\u5462\uff0c\u5b98\u65b9\u6587\u6863\u4e2d\u8bf4\u660e\u4e86\uff0c\u8fd9\u5c31\u662f\u4e00\u4e2a\u52a0\u901f\u67e5\u8be2\u7684\u4e00\u4e2a\u4e1c\u897f\uff0c\u4f7f\u7528\u4e86\u5168\u5c40\u5e8f\u6570\u4e4b\u540e\u53ef\u4ee5\u8ba9\u6570\u636e\u66f4\u7d27\u51d1\uff1b\u8be6\u7ec6\u7684\u5c31\u4e0d\u5c55\u5f00\u4e86\uff0c\u540e\u9762\u6709\u673a\u4f1a\u518d\u8be6\u7ec6\u8bf4\u660e\u4e00\u4e0b\u5168\u5c40\u5e8f\u6570\uff0c\u5177\u4f53\u7684\u76ee\u524d\u53ef\u4ee5\u67e5\u770b\u4e00\u4e0b\u5b98\u65b9\u6587\u6863<\/p>\n
\u5bf9\u4e8e\u6211\u4eec\u672c\u7ae0\u8282\u5185\u5bb9\u6765\u8bf4\uff0c\u6211\u4eec\u77e5\u9053\u7236\u5b50\u6587\u6863Join<\/code>\u7c7b\u578b\u662f\u4f7f\u7528\u5168\u5c40\u5e8f\u6570\u6765\u52a0\u901f\u67e5\u8be2\u7684\u5c31\u53ef\u4ee5\u4e86\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5168\u5c40\u5e8f\u6570\u57fa\u672c\u662f\u5b9e\u65f6\u6784\u5efa\u7684\uff0c\u5f53\u7d22\u5f15\u53d1\u751f\u53d8\u5316\uff0c\u5168\u5c40\u5e8f\u6570\u4f1a\u91cd\u65b0\u6784\u5efa\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4f1a\u589e\u52a0refresh<\/code>\u7684\u65f6\u95f4\uff0c\u5f53\u7136\u8fd9\u4e2a\u914d\u7f6e\u4e5f\u662f\u53ef\u4ee5\u5173\u95ed\u7684\uff0c\u4f46\u662f\u5173\u95ed\u4e4b\u540e\u4f1a\u5728\u6211\u4eec\u63a5\u4e0b\u6765\u9047\u5230\u7684\u7b2c\u4e00\u4e2a\u7236\u8fde\u63a5\u6216\u8005\u805a\u5408\u7684\u67e5\u8be2\u65f6\u91cd\u65b0\u6784\u5efa\u5168\u5c40\u5e8f\u6570\uff0c\u8fd9\u6837\u8fd9\u4e00\u90e8\u5206\u7684\u65f6\u95f4\u5c31\u53cd\u9988\u7ed9\u4e86\u7528\u6237\uff0c\u5b98\u65b9\u4e5f\u662f\u4e0d\u5efa\u8bae\u6211\u4eec\u8fd9\u6837\u505a\u7684\uff0c\u611f\u89c9\u5bf9\u7528\u6237\u6765\u8bf4\u4e0d\u662f\u90a3\u4e48\u7684\u53cb\u597d\uff0c\u4e3b\u8981\u8fd8\u662f\u5728\u4e00\u4e2a\u6743\u8861\u3002\u6700\u574f\u7684\u60c5\u51b5\u5c31\u662f\u540c\u65f6\u6709\u591a\u4e2a\u5199\u5165\uff0c\u4e5f\u5c31\u662f\u540c\u65f6\u6709\u591a\u4e2a\u5168\u5c40\u5e8f\u6570\u9700\u8981\u91cd\u65b0\u6784\u5efa\uff0c\u4e5f\u5c31\u4f1a\u9020\u6210\u5728\u5355\u4e2arefresh<\/code>\u7684\u65f6\u95f4\u95f4\u9694\u5185\u8981\u91cd\u65b0\u6784\u5efa\u591a\u4e2a\u5168\u5c40\u5e8f\u6570<\/p>\n\u5f53\u7136\u5982\u679c\u5173\u8054\u5b57\u6bb5\u4f7f\u7528\u7684\u4e0d\u662f\u5f88\u9891\u7e41\u5e76\u4e14\u5199\u5165\u4e8b\u4ef6\u5f88\u591a\uff0c\u7981\u7528\u6389\u662f\u503c\u5f97\u63a8\u8350\u7684\uff0c\u7981\u7528\u65b9\u5f0f\u5982\u4e0b<\/p>\n
PUT my-index-000001\n{\n "mappings": {\n "properties": {\n "join_field": {\n "type": "join",\n "relations": {\n "goods": ["details","evaluate"],\n "evaluate":"vote"\n },\n "eager_global_ordinals": false\n }\n }\n }\n}<\/code><\/pre>\n\u5f53\u7136\uff0c\u5bf9\u4e8e\u5168\u5c40\u5e8f\u6570\u5360\u7528\u7684\u5806\u5927\u5c0f\u60c5\u51b5\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u8bed\u53e5\u67e5\u770b<\/p>\n
# Per-index\nGET my-index-000001\/_stats\/fielddata?human&fields=join_field#goods\n\n# Per-node per-index\nGET _nodes\/stats\/indices\/fielddata?human&fields=join_field#goods<\/code><\/pre>\n\u7236\u5b50\u6587\u6863<\/h2>\n\n- \n
\u9996\u5148\u6211\u4eec\u8fd8\u662f\u521b\u5efa\u4e00\u4e2a\u6b63\u5e38\u7684\u7236\u5b50\u5173\u7cfb\u7d22\u5f15\uff0c\u5546\u54c1<\/strong>\u4f5c\u4e3a\u7236\u6587\u6863\uff0c\u8be6\u60c5<\/strong>\u4f5c\u4e3a\u5b50\u6587\u6863<\/p>\nDELETE my-index-000001\nPUT my-index-000001\n{\n "mappings": {\n "properties": {\n "id": {\n "type": "keyword"\n },\n "join_field": { \n "type": "join",\n "relations": {\n "goods": "details" \n }\n }\n }\n }\n}<\/code><\/pre>\n\n- my-index-000001<\/strong>\uff1a\u7d22\u5f15\u540d\u79f0<\/li>\n
- id<\/strong>\uff1a\u6587\u6863\u4e3b\u952e<\/li>\n
- join_field<\/strong>\uff1a\u7236\u5b50\u5173\u7cfb\u5b57\u6bb5\uff0c
type<\/code>\u6807\u8bb0\u4e3aJoin<\/code>\u4e3a\u7236\u5b50\u6587\u6863<\/li>\n- relations<\/strong>: \u5b9a\u4e49\u7236\u5b50\u5173\u7cfb\uff0c
goods<\/code>\u4e3a\u7236\u6587\u6863\u7c7b\u578b\u540d\u79f0\uff0cdetails<\/code>\u4e3a\u5b50\u6587\u6863\u7c7b\u578b\u540d\u79f0\uff0c\u540e\u9762\u63d2\u5165\u6570\u636e\uff0c\u67e5\u8be2\u90fd\u4f1a\u4f7f\u7528<\/li>\n<\/ul>\n<\/li>\n- \n
\u63d2\u5165\u51e0\u6761\u6d4b\u8bd5\u6570\u636e\uff0c\u5546\u54c1\u6709iphon<\/strong>\u548cmac<\/strong>\uff0c\u8be6\u60c5\u4e3a\u989c\u8272\u5916\u89c2\u4e0e\u5185\u5b58\u914d\u7f6e\u7b49<\/p>\nPUT my-index-000001\/_doc\/1?refresh\n{\n "id": "1",\n "text": "iphone 14 pro max",\n "join_field": {\n "name": "goods" \n }\n}\n\nPUT my-index-000001\/_doc\/2?refresh\n{\n "id": "2",\n "text": "macbook pro ",\n "join_field": {\n "name": "goods"\n }\n}\n\nPUT my-index-000001\/_doc\/3?routing=1&refresh \n{\n "id": "3",\n "text": "512G 16\u6838",\n "join_field": {\n "name": "details", \n "parent": "1" \n }\n}\n\nPUT my-index-000001\/_doc\/4?routing=1&refresh\n{\n "id": "4",\n "text": "\u7c89\/\u94f6\/\u9ed1\/\u62b9\u8336\u7eff",\n "join_field": {\n "name": "details",\n "parent": "1"\n }\n}\nPUT my-index-000001\/_doc\/5?routing=1&refresh \n{\n "id": "5",\n "text": "1T 32G",\n "join_field": {\n "name": "details", \n "parent": "2" \n }\n}\n\nPUT my-index-000001\/_doc\/6?routing=1&refresh\n{\n "id": "6",\n "text": "\u94f6\/\u9ed1",\n "join_field": {\n "name": "details",\n "parent": "2"\n }\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n\n- \n
\u4f7f\u7528parent_id<\/code>\u67e5\u8be2\u7236\u5b50\u6587\u6863\uff0c\u4ee5\u4e0a\u9762\u63d2\u5165\u7684\u6d4b\u8bd5\u6570\u636e\u67e5\u8be2\uff0c\u67e5\u627emac<\/code>\u7684\u8be6\u60c5\u4fe1\u606f\u8bed\u53e5\u5982\u4e0b\uff0c\u524d\u63d0\u662f\u77e5\u9053\u7236\u6587\u6863\u7684id<\/code><\/p>\nGET my-index-000001\/_search\n{\n "query": {\n "parent_id": {\n "type": "details",\n "id":"2"\n }\n },\n "sort":["id"]\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n\n- \n
\u5927\u90e8\u5206\u60c5\u51b5\u4e0a\u9762\u662f\u4e0d\u80fd\u6ee1\u8db3\u6211\u4eec\u7684\u67e5\u8be2\u8bf7\u6c42\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528has_parent<\/code>\u6216\u8005has_child<\/code>\u67e5\u8be2<\/p>\n\n- \n
\u4f7f\u7528has_parent<\/code>\u67e5\u8be2\uff1a\u7236\u6587\u6863goods<\/code>\u4e2d\u6240\u6709\u5305\u542bmacbook<\/code>\u7684\u5b50\u6587\u6863\uff08\u540e\u6587\u7684\u5b59\u5b50\u6587\u6863\u4e5f\u53ef\u4ee5\u67e5\u8be2\uff09<\/p>\nGET my-index-000001\/_search\n{\n "query": {\n "has_parent": {\n "parent_type": "goods",\n "query": {\n "match": {\n "text": "macbook"\n }\n }\n }\n }\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n- \n
\u4f7f\u7528hash_child<\/code>\u67e5\u770bdetails<\/code>\u5b50\u6587\u6863\u4e2d\u67091T<\/code>\u5173\u952e\u5b57\u7684\u6240\u6709\u7236\u6587\u6863<\/p>\nGET my-index-000001\/_search\n{\n "query": {\n "has_child": {\n "type": "details",\n "query": {\n "match": {\n "text": "1T"\n }\n }\n }\n }\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n\n- \n
\u4f7f\u7528parent-join <\/code>\u67e5\u8be2\u6216\u8005\u805a\u5408<\/p>\nElasticsearch<\/code>\u5728\u4f7f\u7528Join<\/code>\u7c7b\u578b\u6570\u636e\u7c7b\u578b\u65f6\uff0c\u4f1a\u81ea\u52a8\u521b\u5efa\u4e00\u4e2a\u9644\u52a0\u7684\u5b57\u6bb5\uff0c\u7ed3\u6784\u4e3aJoin<\/code>\u7684\u5b57\u6bb5\u540d\u52a0#\u53f7<\/code>\u52a0\u7236\u7c7b\u578b\uff0c\u4ee5\u4e0a\u6587\u4e3a\u4f8b\uff0c\u521b\u5efa\u4e00\u4e2a\u9644\u52a0\u5b57\u6bb5(join_field#goods<\/code>)\uff0c\u5982\u4e0b\u662f\u4f7f\u7528parent-join<\/code>\u5b57\u6bb5\u67e5\u8be2\u805a\u5408\u7684\u4e00\u4e2a\u4f8b\u5b50\uff0c\u53c2\u8003\u81ea\u5b98\u7f51\uff0c\u5e94\u7528\u4e868.1\u7248\u672c<\/code>\u7684\u65b0\u7279\u6027\u8fd0\u884c\u65f6\u5b57\u6bb5<\/strong><\/p>\nGET my-index-000001\/_search\n{\n "query": {\n "parent_id": { \n "type": "details",\n "id": "1"\n }\n },\n "aggs": {\n "parents": {\n "terms": {\n "field": "join_field#goods", \n "size": 10\n }\n }\n },\n "runtime_mappings": {\n "my_parent_field": {\n "type": "long",\n "script": """\n emit(Integer.parseInt(doc['join_field#goods'].value)) \n """\n }\n },\n "fields": [\n { "field": "my_parent_field" }\n ]\n}<\/code><\/pre>\n<\/li>\n- \n
Join<\/code>\u7c7b\u578b\u7684\u7236\u5b50\u6587\u6863\uff0c\u4e0a\u9762\u6211\u4eec\u6f14\u793a\u4e86\u4e00\u4e2a\u7236\u6587\u6863\u5bf9\u5e94\u4e00\u79cd\u5b50\u6587\u6863\u7c7b\u578b\u7684\u4f8b\u5b50\uff0cJoin<\/code>\u7c7b\u578b\u4e5f\u652f\u6301\u4e00\u4e2a\u7236\u7c7b\u578b\u6709\u591a\u4e2a\u5b50\u7c7b\u578b\uff0c\u4ee5\u4e0a\u6587\u4e3a\u57fa\u7840\uff0c\u52a0\u5165\u4e0b\u9762\u8bed\u53e5\u6d4b\u8bd5<\/p>\nDELETE my-index-000001\nPUT my-index-000001\n{\n "mappings": {\n "properties": {\n "id": {\n "type": "keyword"\n },\n "join_field": { \n "type": "join",\n "relations": {\n "goods": ["details","evaluate"] \n }\n }\n }\n }\n}\nPUT my-index-000001\/_doc\/7?routing=1&refresh\n{\n "id": "7",\n "text": "\u8fd0\u884c\u6d41\u7a0b\uff0c\u65e0\u5361\u987f\uff0c\u5f85\u673a\u65f6\u95f4\u957f",\n "join_field": {\n "name": "evaluate",\n "parent": "1"\n }\n}\nPUT my-index-000001\/_doc\/8?routing=1&refresh\n{\n "id": "8",\n "text": "\u4f53\u91cd\u8f7b\uff0c\u643a\u5e26\u65b9\u4fbf\uff0c\u7f16\u7801\u5229\u5668",\n "join_field": {\n "name": "evaluate",\n "parent": "2"\n }\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n\n- \u540c\u6837\u7684\uff0c\u7ec6\u5fc3\u7684\u540c\u5b66\u5df2\u7ecf\u770b\u5230\u4e86\uff0c\u4e0a\u6587\u5df2\u7ecf\u6807\u8bb0\u4e86\u5b59\u5b50\u6587\u6863\uff0c\u5bf9\u7684\uff0c\u4f60\u6ca1\u770b\u9519\u5c31\u662f\u5b59\u5b50\u6587\u6863\uff0c\u4e09\u7ea7\u7684\u5c42\u7ea7\uff0c\u7ea7\u522b\u53ef\u4ee5\u66f4\u6df1\uff0c\u4f46\u662f
Elasticsearch<\/code>\u4e0d\u5efa\u8bae\u5f88\u6df1\u7684\u5c42\u6b21\uff0c\u6bd5\u7adfJoin<\/code>\u5f88\u6d88\u8017\u6027\u80fd\u7684\uff0c\u5c42\u7ea7\u518d\u6df1\u70b9\u6ca1\u6cd5\u7528\u4e86,\u4e0b\u9762\u5c31\u662f\u591a\u7ea7\u522b\u7684\u8bed\u53e5\u6d4b\u8bd5\uff0c\u6b64\u65f6\u4ed6\u4eec\u4e09\u8005\u7684\u5173\u7cfb\u5c31\u5982\u4e0b\u6240\u793a<\/li>\n<\/ul>\n![\"\"](\"https:\/\/segmentfault.com\/img\/remote\/1460000042489665\" "\\"\\"")
<\/p>\n
DELETE my-index-000001\nPUT my-index-000001\n{\n "mappings": {\n "properties": {\n "id": {\n "type": "keyword"\n },\n "join_field": { \n "type": "join",\n "relations": {\n "goods": ["details","evaluate"],\n "evaluate":"vote"\n }\n }\n }\n }\n}\nPUT my-index-000001\/_doc\/9?routing=1&refresh\n{\n "id": "9",\n "text": "\u8fd9\u662f\u6295\u7968\u4fe1\u606f\uff1a\u6211\u4e70iphone\u662f\u56e0\u4e3a\u6027\u4ef7\u6bd4\u9ad8\uff0c\u4fdd\u503c",\n "join_field": {\n "name": "vote",\n "parent": "1"\n }\n}\nPUT my-index-000001\/_doc\/10?routing=1&refresh\n{\n "id": "10",\n "text": "\u8fd9\u662f\u6295\u7968\u4fe1\u606f\uff1a\u6211\u4e70mac\u662f\u56e0\u4e3a\u8f7b\uff0c\u643a\u5e26\u65b9\u4fbf\uff0c\u6ca1\u6709\u6d41\u6c13\u8f6f\u4ef6",\n "join_field": {\n "name": "vote",\n "parent": "2"\n }\n}<\/code><\/pre>\n\u603b\u7ed3<\/h2>\n
\u76f8\u4fe1\u5927\u5bb6\u4e5f\u770b\u51fa\u6765\u4e86\uff0c\u5b98\u65b9\u90fd\u4e0d\u5efa\u8bae\u4f7f\u7528\u7236\u5b50\u6587\u6863\u7684\uff0c\u6bd5\u7adf\u6027\u80fd\u662f\u4e00\u5927\u95ee\u9898\uff0c\u76f8\u4fe1\u5927\u5bb6\u7528Elasticsearch<\/code>\u80af\u5b9a\u5927\u90e8\u5206\u90fd\u662f\u56fe\u901f\u5ea6\u5feb\uff0c\u7528\u4e86Join<\/code>\u5b57\u6bb5\u53d8\u6162\u4e86\uff0c\u8fd9\u8c01\u80fd\u540c\u610f\u5462\u662f\u5427\uff0c\u6709\u5229\u6709\u5f0a\u5427\uff0c\u770b\u5927\u5bb6\u9009\u62e9\uff0c\u4e0b\u4e00\u7bc7\u5e26\u7ed9\u5927\u5bb6\u7684\u7b97\u662fElasticsearch<\/code>\u63a8\u8350Join<\/code>\u5b57\u6bb5\u66ff\u4ee3\u7c7b\u578bNested<\/code><\/p>\n\u672c\u6587\u7531mdnice<\/a>\u591a\u5e73\u53f0\u53d1\u5e03<\/p>\n