{"id":36714,"date":"2023-04-30T07:35:05","date_gmt":"2023-07-29T08:54:30","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8apache-age-1\/"},"modified":"2024-04-30T01:57:32","modified_gmt":"2024-04-29T17:57:32","slug":"%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8apache-age-1","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8apache-age-1\/","title":{"rendered":"\u5c1d\u8bd5\u4f7f\u7528Apache AGE (1)"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u55b5\u3002
\n\u6700\u8fd1\u5728\u770bTwitter\u7684\u65f6\u5019\uff0c\u770b\u5230\u4e86\u4e00\u4e2a\u6709\u8da3\u7684\u6269\u5c55\u7a0b\u5e8f\u53eb\u505aApache AGE\uff0c\u6240\u4ee5\u6211\u8bd5\u7740\u7528\u4e86\u4e00\u4e0b\u3002
\n\u76f8\u5173\u63a8\u6587 \u2192 https:\/\/twitter.com\/DataAugmented\/status\/1520449666222989314<\/p>\n

Apache AGE\uff08\u5b75\u5316\u4e2d\uff09\u662f\u4e00\u4e2a\u4e3a PostgreSQL \u63d0\u4f9b\u56fe\u6570\u636e\u5e93\u529f\u80fd\u7684\u6269\u5c55\u3002<\/p><\/blockquote>\n

\u6211\u8fd9\u6b21\u5148\u5b89\u88c5\u4e86\u8f6f\u4ef6\uff0c\u8bd5\u7740\u751f\u6210\u4e86\u4e00\u4e9b\u7b80\u5355\u7684\u56fe\u5f62\uff0c\u5e76\u4f7f\u7528OpenCypher\u8fdb\u884c\u4e86\u7b80\u5355\u7684\u641c\u7d22\u3002<\/p>\n

Apache AGE\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u636e\u8bf4\uff0cApache AGE\u662f\u4f5c\u4e3aPostgreSQL\u7684\u6269\u5c55\u529f\u80fd\uff08SQL\u51fd\u6570\uff09\u63d0\u4f9b\u7684\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e0e\u56fe\u6570\u636e\u5e93\u67e5\u8be2\u8bed\u8a00OpenCypher\u7684\u63a5\u53e3\u3002OpenCypher\u662f\u57fa\u4e8eCypher\u5f00\u53d1\u7684\u67e5\u8be2\u8bed\u8a00\uff0c\u5728\u56fe\u6570\u636e\u5e93Neo4j\u4e2d\u4e5f\u4f7f\u7528\u8fc7\u4e00\u4e9b\u3002\u5c3d\u7ba1\u76ee\u524d\u8fd8\u5904\u4e8e\u5b9e\u9a8c\u9636\u6bb5\uff0c\u5e76\u4e14\u6807\u6709\uff08\u6b63\u5728\u5b75\u5316\uff09\u7684\u6807\u8bb0\uff0c\u4f46\u5982\u679c\u80fd\u591f\u5728PostgreSQL\u4e0a\u7ba1\u7406\u56fe\u6570\u636e\u5e93\u5e76\u80fd\u591f\u4f7f\u7528SQL\u8fdb\u884c\u64cd\u4f5c\uff0c\u90a3\u4e48\u6211\u53ef\u4ee5\u5c1d\u8bd5\u4e00\u4e9b\u6709\u8da3\u7684\u4e8b\u60c5\u3002\u6240\u4ee5\u6211\u51b3\u5b9a\u7acb\u5373\u8fdb\u884c\u5c1d\u8bd5\u3002<\/p>\n

\u7531\u4e8e\u6587\u4ef6\u4f3c\u4e4e\u5df2\u7ecf\u9f50\u5168\uff0c\u6240\u4ee5\u53ea\u8981\u662f\u7b80\u5355\u7684\u64cd\u4f5c\uff0c\u5373\u4f7f\u662f\u50cf\u6211\u8fd9\u6837\u7684\u56fe\u6570\u636e\u5e93\u521d\u5b66\u8005\uff0c\u901a\u8fc7\u67e5\u770b\u6587\u4ef6\uff0c\u4e5f\u80fd\u591f\u627e\u5230\u89e3\u51b3\u7684\u529e\u6cd5\u3002[\u94fe\u63a5](https:\/\/age.apache.org\/docs\/master\/index.html)<\/p>\n

\u5b89\u88c5\u548c\u8bbe\u7f6e<\/h1>\n

\u83b7\u53d6\u5b89\u88c5\u6750\u6599<\/h2>\n

Apache AGE\u4ece\u4ee5\u4e0b\u7f51\u7ad9\u83b7\u53d6\u4e86\u6e90\u4ee3\u7801\u96c6\u3002
\nhttps:\/\/www.apache.org\/dyn\/closer.lua\/incubator\/age\/1.0.0\/apache-age-1.0.0-incubating-src.tar.gz<\/p>\n

\u76ee\u524d\u5df2\u652f\u6301PostgreSQL 11\u7248\u672c\u3002\u9884\u8ba1\u5c06\u6765\u8fd8\u4f1a\u652f\u6301PostgreSQL 12\u548c13\u7248\u672c\u3002\u8fd9\u6b21\u662f\u5728\u6211\u624b\u5934\u6709\u7684PostgreSQL 11.6\u73af\u5883\u4e0a\u8fdb\u884c\u5b89\u88c5\u3002<\/p>\n

\u521b\u5efa\u5e76\u5b89\u88c5<\/h2>\n

\u53ea\u9700\u89e3\u538b\u6e90\u4ee3\u7801\uff0c\u5e76\u8fdb\u5165\u89e3\u538b\u540e\u7684\u76ee\u5f55\uff0c\u7136\u540e\u6267\u884cmake\u547d\u4ee4\u3002<\/p>\n

$ make USE_PGXS=1\r\n<\/code><\/pre>\n
\u7f16\u8bd1\u5b8c\u6210\u540e\uff0c\u6267\u884cmake install\u3002
\n\u8fd9\u5c06\u5b89\u88c5PostgreSQL 11\u5728\u6307\u5b9a\u7684\u76ee\u5f55\u4e0b\u7684\u5e93\u6587\u4ef6(*.so)\u4ee5\u53ca\u7528\u4e8eCREATE EXTENSION\u547d\u4ee4\u7684\u811a\u672c\u3002<\/p>\n
$ <\/span>ls<\/span> -l<\/span> lib\/age.so\r\n-rwxr-xr-x<\/span> 1 ec2-user ec2-user 519792 May  3 15:20 lib\/age.so\r\n$ $ <\/span>ls<\/span> -l<\/span> share\/extension\/age*<\/span>\r\n-rw-r--r--<\/span> 1 ec2-user ec2-user 77061 May  3 15:20 share\/extension\/age--1.0.0.sql\r\n-rw-r--r--<\/span> 1 ec2-user ec2-user   900 May  3 15:20 share\/extension\/age.control\r\n$<\/span>\r\n<\/code><\/pre>\n
\u5c06\u4fe1\u606f\u5f55\u5165\u6570\u636e\u5e93<\/h2>\n
\u8981\u4f7f\u7528Apache AGE\uff0c\u9700\u8981\u901a\u8fc7CREATE EXTENSION\u547d\u4ee4\u5c06\u5176\u6ce8\u518c\u5230\u6570\u636e\u5e93\u4e2d\u3002
\n\u4e0b\u9762\u662f\u521b\u5efa\u4e00\u4e2a\u540d\u4e3asample\u7684\u6570\u636e\u5e93\uff0c\u5e76\u5c06AGE\u6269\u5c55\u529f\u80fd\u6ce8\u518c\u5230\u5176\u4e2d\u7684\u793a\u4f8b\u3002<\/p>\n
$ <\/span>createdb sample\r\n$ <\/span>psql sample -c<\/span> \"CREATE EXTENSION age\"<\/span>\r\nCREATE EXTENSION\r\n$ <\/span>psql sample -c<\/span> \"<\/span>\\d<\/span>x\"<\/span>\r\n                 List of installed extensions\r\n  Name   | Version |   Schema   |         Description\r\n---------<\/span>+---------+------------+------------------------------\r\n age     | 1.0.0   | ag_catalog | AGE database extension\r\n plpgsql | 1.0     | pg_catalog | PL\/pgSQL procedural language\r\n(<\/span>2 rows)<\/span>\r\n\r\n$<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528dx\u5143\u547d\u4ee4\uff0c\u5982\u679c\u663e\u793aage 1.0.0\uff0c\u5219\u8868\u793a\u5df2\u6210\u529f\u6ce8\u518c\u3002<\/p>\n
PostgreSQL\u7684\u914d\u7f6e\u8bbe\u7f6e<\/h2>\n
\u5f53\u4f7f\u7528CREATE EXTENSION\u547d\u4ee4\u5b8c\u6210\u6ce8\u518c\u540e\uff0c\u5c06\u5728\u76ee\u6807\u6570\u636e\u5e93\u4e2d\u6ce8\u518c\u4e00\u4e2a\u540d\u4e3aag_catalog\u7684\u6a21\u5f0f\u3002<\/p>\n
$ <\/span>psql sample -c<\/span> \"<\/span>\\d<\/span>n\"<\/span>\r\n    List of schemas\r\n    Name    |  Owner\r\n------------<\/span>+----------\r\n ag_catalog | postgres\r\n public     | postgres\r\n(<\/span>2 rows)<\/span>\r\n\r\n$<\/span>\r\n<\/code><\/pre>\n
AGE\u63d0\u4f9b\u7684SQL\u51fd\u6570\u4e5f\u5b58\u50a8\u5728ag_catalog\u6a21\u5f0f\u4e2d\u3002<\/p>\n
SELECT<\/span> *<\/span> FROM<\/span> ag_catalog<\/span>.<\/span>cypher<\/span>(<\/span> ...<\/span> )<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u6dfb\u52a0\u6a21\u5f0f\u4fee\u9970\u7b26\u7684\u8bdd\uff0c\u53ef\u4ee5\u4f7f\u7528\u3002\u4f46\u5982\u679c\u89c9\u5f97\u6dfb\u52a0\u6a21\u5f0f\u4fee\u9970\u7b26\u9ebb\u70e6\u7684\u8bdd\uff0c\u53ef\u4ee5\u5728postgresql.conf\u7684search_path\u53d8\u91cf\u4e2d\u8fdb\u884c\u4ee5\u4e0b\u8bbe\u7f6e\uff0c\u5e76\u91cd\u65b0\u542f\u52a8\uff0c\u4ee5\u4fbf\u65e0\u9700\u6a21\u5f0f\u4fee\u9970\u7b26\u5373\u53ef\u4f7f\u7528AGE\u63d0\u4f9b\u7684\u51fd\u6570\u3002<\/p>\n
search_path<\/span> =<\/span> ag_catalog<\/span>,<\/span> \"$user\"<\/span>,<\/span> public<\/span>\r\n<\/code><\/pre>\n
\u751f\u6210\u56fe\u8868 t\u00fa<\/h1>\n
AGE\u4e3a\u5b58\u50a8\u9876\u70b9\u4e0e\u8fb9\u7684\u533a\u57df\u7684\u7ed3\u6784\u79f0\u4e3a”\u56fe”\u3002\u56e0\u6b64\uff0c\u4e3a\u4e86\u521b\u5efa”\u56fe”\uff0c\u9996\u5148\u9700\u6267\u884cAGE\u63d0\u4f9b\u7684\u4e13\u7528SQL\u51fd\u6570create_graph()\u3002
\ncreate_graph()\u63a5\u53d7\u4e00\u4e2a\u5b57\u7b26\u4e32\u53c2\u6570\uff0c\u8be5\u53c2\u6570\u6307\u793a\u56fe\u7684\u540d\u79f0\uff0c\u5e76\u5728\u4ee5\u540e\u6267\u884cOpenCypher\u547d\u4ee4\u7684cypher()\u51fd\u6570\u4e2d\u4f20\u9012create_graph()\u6307\u5b9a\u7684\u56fe\u540d\u79f0\u662f\u5fc5\u8981\u7684\u3002
\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u53ef\u4ee5\u8bf4\u5728\u4e00\u4e2a\u6570\u636e\u5e93\u4e0a\u53ef\u4ee5\u5e03\u7f6e\u591a\u4e2a\u56fe\u3002<\/p>\n
\u4ee5\u4e0b\u662f create_graph() \u7684\u793a\u4f8b\uff08\u5df2\u7ecf\u5728 age \u6570\u636e\u5e93\u4e2d\u6ce8\u518c\u4e86 age \u6269\u5c55\uff09\u3002<\/p>\n
$ <\/span>psql age -c<\/span> \"SELECT create_graph('sample');\"<\/span>\r\nNOTICE:  graph \"sample\"<\/span> has been created\r\n create_graph\r\n--------------<\/span>\r\n\r\n(<\/span>1 row)<\/span>\r\n\r\n$<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664\u56fe\u8868<\/h1>\n
\u5982\u679c\u8981\u5220\u9664\u521b\u5efa\u7684\u56fe\u8868\uff0c\u5219\u9700\u8981\u4f7f\u7528AGE\u63d0\u4f9b\u7684\u4e13\u7528SQL\u51fd\u6570drop_graph()\u6765\u6267\u884c\u3002
\ndrop_graph()\u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\u3002
\n\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u53c2\u6570\u8868\u793a\u56fe\u8868\u7684\u540d\u79f0\uff0c\u6307\u5b9a\u8981\u5220\u9664\u7684\u56fe\u8868\u540d\u79f0\u3002
\n\u7b2c\u4e8c\u4e2a\u5e03\u5c14\u53c2\u6570\uff08\u7ea7\u8054\uff09\u662f\u7528\u4e8e\u786e\u5b9a\u662f\u5426\u7ea7\u8054\u5220\u9664\u4f9d\u8d56\u5bf9\u8c61\u7684\u6807\u5fd7\u3002
\n\u4ee5\u4e0b\u662fdrop_graph()\u7684\u793a\u4f8b\u6267\u884c\u3002<\/p>\n
$ <\/span>psql age -c<\/span> \"SELECT drop_graph('sample',true);\"<\/span>\r\nNOTICE:  drop cascades to 2 other objects\r\nDETAIL:  drop cascades to table sample._ag_label_vertex\r\ndrop cascades to table sample._ag_label_edge\r\nNOTICE:  graph \"sample\"<\/span> has been dropped\r\n drop_graph\r\n------------<\/span>\r\n\r\n(<\/span>1 row)<\/span>\r\n\r\n$<\/span>\r\n<\/code><\/pre>\n
\u53e6\u5916\uff0c\u76ee\u524d\u60c5\u51b5\u4e0b\u4f3c\u4e4e\u53ea\u80fd\u5728cascade\u4e2d\u6307\u5b9a\u4e3atrue\u3002
\n\u5982\u679c\u5728create_graph\u4e4b\u540e\u5c1d\u8bd5\u5220\u9664\u56fe\u8868\uff0c\u5e76\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u6307\u5b9a\u4e3afalse\uff0c\u6216\u8005\u7701\u7565\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u4f3c\u4e4e\u4f1a\u5bfc\u81f4\u5220\u9664\u5931\u8d25\u3002\u4e0b\u9762\u662f\u6307\u5b9a\u4e3afalse\u65f6\u7684\u884c\u4e3a\u793a\u4f8b\u3002<\/p>\n
$ <\/span>psql age -c<\/span> \"SELECT drop_graph('sample',false);\"<\/span>\r\nERROR:  cannot drop schema sample because other objects depend on it\r\nDETAIL:  table sample._ag_label_vertex depends on schema sample\r\ntable sample._ag_label_edge depends on schema sample\r\nHINT:  Use DROP ... CASCADE to drop the dependent objects too.\r\n$<\/span>\r\n<\/code><\/pre>\n
\u56fe\u6570\u636e\u5e93\u7684\u7ec4\u6210\u8981\u7d20<\/h1>\n
\u751f\u6210\u56fe\u5f62\u540e\uff0c\u4f1a\u751f\u6210\u6784\u6210\u56fe\u5f62\u6570\u636e\u5e93\u7684\u9876\u70b9\u548c\u8fb9\u3002
\n\u56fe\u5f62\u6570\u636e\u5e93\u57fa\u672c\u4e0a\u7531\u9876\u70b9\u548c\u8fde\u63a5\u4e24\u4e2a\u9876\u70b9\u7684\u8fb9\u6784\u6210\u3002<\/p>\n
\"figure.png\"<\/div>\n
\u9876\u70b9\u6216\u8fb9\u4e0a\u53ef\u4ee5\u6dfb\u52a0\u6807\u7b7e\u6216\u5c5e\u6027\u503c\u3002<\/p>\n
\u5bc6\u7801\u51fd\u6570<\/h1>\n
\u5982\u679c\u8981\u6ce8\u518c\u9876\u70b9\u548c\u8fb9\u5e76\u5bf9\u56fe\u8fdb\u884c\u641c\u7d22\u7684\u8bdd\uff0c\u53ef\u4ee5\u4f7f\u7528AGE\u63d0\u4f9b\u7684SQL\u51fd\u6570Cypher\u3002
\n\u867d\u7136\u8bed\u6cd5\u6709\u4e9b\u7279\u70b9\uff0c\u4f46\u4e60\u60ef\u4e4b\u540e\u5e76\u4e0d\u96be\u3002
\nCypher\u51fd\u6570\u7684\u57fa\u672c\u7ed3\u6784\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span><<\/span>graph_name<\/span>><\/span>,<\/span> $$<\/span> \r\n\/* Cypher Query Here *\/<\/span> \r\n$$<\/span>)<\/span> AS<\/span> (<\/span>result<\/span> agtype<\/span> [,<\/span>resule<\/span> agtype<\/span>]...<\/span> );<\/span>\r\n<\/code><\/pre>\n
\u6700\u521d\u7684\u53c2\u6570\u4e3a\uff0c\u5728\u751f\u6210\u56fe\u65f6\u6307\u5b9a\u7684\u56fe\u540d\uff0c\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u7ed9\u51fa\u3002
\n\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7684\u5f00\u5934\u6709\u4e00\u4e2a\u964c\u751f\u7684\u63cf\u8ff0$$\uff0c\u5b9e\u9645\u4e0a\u662f\u6307\u5b9aPostgreSQL\u7684\u5f15\u53f7\u3002
\n\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u5f15\u53f7\u3002
\n\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528$$\u4f5c\u4e3a\u5f15\u53f7\uff0c\u56e0\u4e3a\u5728\u7f16\u5199PostgreSQL\u7684SQL\u51fd\u6570\u6216PL\/pgSQL\u51fd\u6570\u65f6\uff0c\u60ef\u4f8b\u662f\u4f7f\u7528$$\u4f5c\u4e3a\u5f15\u53f7\uff0c\u4f46\u5b9e\u9645\u4e0a\u53ef\u4ee5\u6307\u5b9a\u4efb\u610f\u5b57\u7b26\uff08\u4f8b\u5982$quote$\uff09\u3002
\n\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8981\u8fd9\u6837\u6307\u5b9a\u5462\uff1f\u56e0\u4e3a\u5728\/* Cypher Query Here *\/\u4e2d\u7684Cypher\u67e5\u8be2\u4e2d\uff0c\u4f7f\u7528\u5355\u5f15\u53f7\u4f5c\u4e3a\u5f15\u53f7\u3002\u5982\u679c\u4e0d\u4f7f\u7528$$\u6307\u5b9a\u5f15\u53f7\uff0c\u90a3\u4e48\u5728Cypher\u67e5\u8be2\u4e2d\u7684\u5355\u5f15\u53f7\u9700\u8981\u9010\u4e2a\u8f6c\u4e49\uff0c\u8fd9\u6837\u5c31\u4f1a\u53d8\u5f97\u9ebb\u70e6\u4e14\u4e0d\u53ef\u8bfb\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u5b9e\u9645\u7684Cypher\u51fd\u6570\u6267\u884c\u793a\u4f8b\u7684\u56fe\u50cf\u3002<\/p>\n
SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 101<\/span>,<\/span> name<\/span>:<\/span>'Alice'<\/span>,<\/span> gender<\/span>:<\/span>'Fmale'<\/span>}<\/span> )<\/span>\r\nRETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7Cyper\u8fdb\u884c\u6ce8\u518c\u548c\u641c\u7d22\u7684\u793a\u4f8b<\/h1>\n
\u4e0d\u77e5\u9053\u662f\u8c01\u9996\u5148\u8bf4\u51fa\u4e86\u559c\u6b22\u548c\u8ba8\u538c\u8fd9\u6837\u7684\u8bdd\u3002<\/p><\/blockquote>\n
\u8fd9\u91cc\u4ee5\u793a\u4f8b\u4e3a\u57fa\u7840\uff0c\u5c55\u793a\u4e86\u6709\u5173Vertex\u3001Edge\u7684\u6ce8\u518c\u4ee5\u53ca\u6ce8\u518c\u540e\u5bf9\u56fe\u8fdb\u884c\u7b80\u5355\u641c\u7d22\u7684\u4f8b\u5b50\u3002
\n\u4f5c\u4e3a\u793a\u4f8b\uff0c\u6211\u4f1a\u4e3e\u51fa\u4ee5Person\u6807\u7b7e\u4e3a\u4f8b\u7684\u4e94\u4e2aVertex\u4ee5\u53ca\u4ee5\u559c\u6b22(Like)\/\u8ba8\u538c(Dislike)\u4e3a\u6807\u7b7e\u7684\u4e24\u79cdEdge\u7684\u4f8b\u5b50\u3002
\n\u901a\u8fc7\u56fe\u6765\u8868\u793a\u7684\u8bdd\uff0c\u5c31\u662f\u8fd9\u6837\u7684\u6837\u5b50\u3002<\/p>\n
\"persons-graph.png\"<\/div>\n
\u55ef\uff0c\u611f\u89c9\u6709\u4e9b\u7231\u6068\u4ea4\u7ec7\u7684\u60c5\u51b5\u5462\u3002<\/p>\n
Vertex\u7684\u6ce8\u518c<\/h2>\n
\u5728\u6ce8\u518cVertex\u65f6\uff0c\u4f7f\u7528Cypher\u7684CREATE\u547d\u4ee4\u3002
\nCREATE\u547d\u4ee4\u7684\u57fa\u672c\u683c\u5f0f\u662f<\/p>\n
CREATE \u751f\u6210\u3057\u305fVertex = ( [:\u30e9\u30d9\u30eb\u540d] [ {\u5c5e\u6027\u540d:\u5c5e\u6027\u5024[, \u5c5e\u6027\u540d:\u5c5e\u6027\u5024]... RETURN \u751f\u6210\u3057\u305fVertex\r\n<\/code><\/pre>\n
\u5728SQL\u51fd\u6570\u5185\u7f16\u5199\u4e0a\u8ff0\u5185\u5bb9\uff0c\u5e76\u5c06Cypher\u51fd\u6570\u7684\u8fd4\u56de\u503c\u63cf\u8ff0\u4e3a`(\u53d8\u91cf\u540d \u7c7b\u578b)`\uff0c\u4f5c\u4e3aSQL\u8fdb\u884c\u6267\u884c\u3002\u5c3d\u7ba1\u8fd9\u662f\u4e00\u4e2a\u6709\u4e24\u4e2a\u9636\u6bb5\u7684\u7ed3\u6784\uff0c\u521a\u5f00\u59cb\u53ef\u80fd\u4f1a\u611f\u5230\u6709\u4e9b\u56f0\u60d1\uff0c\u4f46\u6211\u4eec\u51b3\u5b9a\u63a5\u53d7\u5e76\u4f7f\u7528\u5b83\u3002<\/p>\n
\u4ee5\u4e0b\u306b\u793a\u3059\u3088\u3046\u306b\u3001Person\u30e9\u30d9\u30eb\u3092\u6301\u3064Vertex\u306e\u767b\u9332\u4f8b\uff08\u4f8b\u3048\u3070\u3001Alice\uff1d\u30b5\u30f3\u306e\u767b\u9332\u4f8b\uff09\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
    \n
  • \n
      \u30e9\u30d9\u30eb\u306fPerson<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          \u5c5e\u6027\u3068\u3057\u3066\u4ee5\u4e0b\u306e3\u3064\u3092\u3082\u3064<\/ul>\n<\/li>\n<\/ul>\n
          id\u5c5e\u6027\u3002\u5024\u306f101
          \nname\u5c5e\u6027\u3002\u5024\u306f’Alice’
          \ngender\u5c5e\u6027\u3002\u5024\u306f’Female’<\/p>\n
          SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 101<\/span>,<\/span> name<\/span>:<\/span>'Alice'<\/span>,<\/span> gender<\/span>:<\/span>'Female'<\/span>}<\/span> )<\/span>\r\n    RETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n                                                             p<\/span>\r\n---------------------------------------------------------------------------------------------------------------------------<\/span>\r\n [{<\/span>\"id\"<\/span>:<\/span> 844424930131969<\/span>,<\/span> \"label\"<\/span>:<\/span> \"Person\"<\/span>,<\/span> \"properties\"<\/span>:<\/span> {<\/span>\"id\"<\/span>:<\/span> 101<\/span>,<\/span> \"name\"<\/span>:<\/span> \"Alice\"<\/span>,<\/span> \"gender\"<\/span>:<\/span> \"Fmale\"<\/span>}}::<\/span>vertex<\/span>]::<\/span>path<\/span>\r\n(<\/span>1<\/span> row<\/span>)<\/span>\r\n<\/code><\/pre>\n
          \u6267\u884c\u4e0a\u8ff0\u7684SELECT\u8bed\u53e5\u540e\uff0c\u4f1a\u8fd4\u56de\u4e00\u4e2a\u7c7b\u4f3cJSON\u7684\u503c\u3002\u8fd9\u4e2a\u503c\u88ab\u79f0\u4e3a\u8def\u5f84\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u751f\u6210\u7684\u9876\u70b9\u7684\u5143\u6570\u636e\u548c\u5c5e\u6027\u503c\u96c6\u5408\u3002<\/p>\n
          \u65e2\u7136\u5b8c\u6210\u4e86Alice\u7684\u6ce8\u518c\uff0c\u90a3\u4e48\u6211\u4eec\u4e5f\u8981\u540c\u6837\u5730\u6ce8\u518c\u5176\u4ed6\u56db\u4e2a\u4eba\u3002\u5173\u4e8e\u5176\u4ed6\u56db\u4e2a\u4eba\u7684\u6ce8\u518c\u793a\u4f8b\uff0c\u53ef\u4ee5\u5728\u672c\u9875\u7684\u201c\u53c2\u8003\u4fe1\u606f\u201d\u90e8\u5206\u627e\u5230\u3002<\/p>\n
          Edge\u7684\u6ce8\u518c<\/h2>\n
          \u5982\u679c\u8981\u6ce8\u518c\u4e00\u4e2aEdge\uff0c\u6700\u91cd\u8981\u7684\u662f”\u5728Edge\u7684\u4e24\u7aef\u5b58\u5728\u4e00\u4e2aVertex”\u3002
          \n\u7b80\u800c\u8a00\u4e4b\uff0c\u5982\u679c\u8981\u6ce8\u518c\u4e00\u4e2aEdge\uff0c\u5fc5\u987b\u5148\u5b58\u5728Vertex\uff0c\u4e0d\u5b58\u5728\u6ca1\u6709Vertex\u7684Edge\u3002
          \n\u6240\u4ee5\uff0c\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u9996\u5148\u8981\u6ce8\u518cVertex\uff0c\u7136\u540e\u9009\u62e9\u5df2\u5b58\u5728\u7684Vertex\u3002
          \n\u5728\u4e4b\u524d\u7684\u7ae0\u8282\u4e2d\u5df2\u6ce8\u518c\u4e86Vertex\uff0c\u6240\u4ee5\u8981\u521b\u5efa\u8fde\u63a5Vertex\u7684Edge\u3002<\/p>\n
          \u521b\u5efa\u8fb9\u7f18\u5bf9\u8c61\u4e0e\u521b\u5efa\u9876\u70b9\u5bf9\u8c61\u4e00\u6837\u90fd\u4f7f\u7528CREATE\u8bed\u53e5\u3002\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u5728\u521b\u5efa\u65f6\u4f7f\u7528MATCH\u5b50\u53e5\u6307\u5b9a\u8fb9\u7f18\u7684\u4e24\u4e2a\u7aef\u70b9\u3002<\/p>\n
          \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\uff0cAlice\uff1d\u30b5\u30f3\u5bf9Bob\uff1d\u30b5\u30f3\u751f\u6210\u4e86\u4e00\u4e2a\u6807\u8bb0\u4e3aLike\u7684\u8fb9\u3002<\/p>\n
          SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Alice'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Bob'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n<\/code><\/pre>\n
          \u5728MATCH\u53e5\u4e2d\uff0c\u8bbe\u7f6e\u4e24\u4e2a\u6807\u7b7e\u4e3aPerson\u7684\u6807\u7b7e\uff0c\u5e76\u5c06\u7b2c\u4e00\u4e2aPerson\u5206\u914d\u7ed9\u53d8\u91cfa\uff0c\u5c06\u4e0b\u4e00\u4e2aPerson\u5206\u914d\u7ed9\u53d8\u91cfb\u3002\u7136\u540e\uff0c\u5728\u4e0b\u4e00\u4e2aWHERE\u53e5\u4e2d\uff0c\u5c06a\u7684Person\u6761\u4ef6\u8bbe\u7f6e\u4e3a\u540d\u5b57\u4e3a”Alice”\uff0c\u5c06b\u7684Person\u6761\u4ef6\u8bbe\u7f6e\u4e3a\u540d\u5b57\u4e3a”Bob”\u3002\u8fd9\u6837\u5c31\u6307\u5b9a\u4e86Alice\uff1d\u30b5\u30f3\u5230Bob\uff1d\u30b5\u30f3\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u7136\u540e\uff0c\u4f7f\u7528CREATE\u8bed\u53e5\u521b\u5efa\u6240\u786e\u5b9a\u7684\u5173\u7cfb\uff0c\u5e76\u5c06\u5176\u6807\u8bb0\u4e3aLike\uff08”\u597d\u304d”\uff09\u3002Edge\u4e0eVertex\u4e00\u6837\u53ef\u4ee5\u8bbe\u7f6e\u4efb\u610f\u5c5e\u6027(properties)\u3002\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u8bbe\u7f6e\u4e86\u540d\u4e3alevel\u7684\u5c5e\u6027\uff0c\u5176\u503c\u4e3a”high”\uff08”\u597d\u304d”\u7ea7\u522b\u9ad8\u7684\u611f\u89c9\uff09\u3002<\/p>\n
          \u6211\u4eec\u5c06\u8bbe\u7f6e\u5177\u6709\u201c\u559c\u6b22\/\u4e0d\u559c\u6b22\u201d\u6807\u7b7e\u7684\u8fb9\uff0c\u5982\u56fe\u6240\u793a\u3002<\/p>\n
          \u4f7f\u7528Cypher\u8fdb\u884c\u641c\u7d22<\/h2>\n
          \u5728\u4f7f\u7528Cypher\u8fdb\u884c\u641c\u7d22\u65f6\uff0c\u9700\u8981\u50cf\u6ce8\u518c\u65f6\u4e00\u6837\u4f7f\u7528Cypher\u51fd\u6570\u3002
          \nCypher\u67e5\u8be2\u7684\u57fa\u672c\u7ed3\u6784\u662fMATCH\u2192WHERE\u2192RETURN\u3002
          \nWHERE\u6761\u4ef6\u4e0d\u662f\u5fc5\u9700\u7684\uff0c\u6240\u4ee5\u5728\u7b80\u5355\u641c\u7d22\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u53ea\u4f7f\u7528MATCH\u2192RETURN\u3002<\/p>\n
          \u73b0\u5728\uff0c\u5728\u8fd9\u91cc\uff0c\u518d\u6b21\u5c55\u793a\u6240\u521b\u5efa\u7684\u9876\u70b9\u548c\u8fb9\u7684\u56fe\u3002<\/p>\n
          \"persons-graph.png\"<\/div>\n
          \u9876\u70b9\u5217\u8868<\/h3>\n
          \u9996\u5148\uff0c\u53ea\u9700\u5c1d\u8bd5\u641c\u7d22\u6b64\u56fe\u4e2d\u5b58\u5728\u7684\u6240\u6709\u4eba\u7269\u9876\u70b9\u3002<\/p>\n
          SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>)<\/span> RETURN<\/span> a<\/span>\r\n$$<\/span> )<\/span> as<\/span> (<\/span>\"Person\"<\/span> agtype<\/span>);<\/span>\r\n<\/code><\/pre>\n
          \u8fd0\u884c\u6b64\u547d\u4ee4\u540e\uff0c\u5c06\u8fd4\u56de\u4ee5\u4e0b\u7ed3\u679c\u3002<\/p>\n
                                                                 Person<\/span>\r\n--------------------------------------------------------------------------------------------------------------------<\/span>\r\n {<\/span>\"id\"<\/span>:<\/span> 844424930131969<\/span>,<\/span> \"label\"<\/span>:<\/span> \"Person\"<\/span>,<\/span> \"properties\"<\/span>:<\/span> {<\/span>\"id\"<\/span>:<\/span> 101<\/span>,<\/span> \"name\"<\/span>:<\/span> \"Alice\"<\/span>,<\/span> \"gender\"<\/span>:<\/span> \"Female\"<\/span>}}::<\/span>vertex<\/span>\r\n {<\/span>\"id\"<\/span>:<\/span> 844424930131970<\/span>,<\/span> \"label\"<\/span>:<\/span> \"Person\"<\/span>,<\/span> \"properties\"<\/span>:<\/span> {<\/span>\"id\"<\/span>:<\/span> 102<\/span>,<\/span> \"name\"<\/span>:<\/span> \"Bob\"<\/span>,<\/span> \"gender\"<\/span>:<\/span> \"Male\"<\/span>}}::<\/span>vertex<\/span>\r\n {<\/span>\"id\"<\/span>:<\/span> 844424930131971<\/span>,<\/span> \"label\"<\/span>:<\/span> \"Person\"<\/span>,<\/span> \"properties\"<\/span>:<\/span> {<\/span>\"id\"<\/span>:<\/span> 103<\/span>,<\/span> \"name\"<\/span>:<\/span> \"Casey\"<\/span>,<\/span> \"gender\"<\/span>:<\/span> \"Female\"<\/span>}}::<\/span>vertex<\/span>\r\n {<\/span>\"id\"<\/span>:<\/span> 844424930131972<\/span>,<\/span> \"label\"<\/span>:<\/span> \"Person\"<\/span>,<\/span> \"properties\"<\/span>:<\/span> {<\/span>\"id\"<\/span>:<\/span> 104<\/span>,<\/span> \"name\"<\/span>:<\/span> \"Dave\"<\/span>,<\/span> \"gender\"<\/span>:<\/span> \"Male\"<\/span>}}::<\/span>vertex<\/span>\r\n {<\/span>\"id\"<\/span>:<\/span> 844424930131973<\/span>,<\/span> \"label\"<\/span>:<\/span> \"Person\"<\/span>,<\/span> \"properties\"<\/span>:<\/span> {<\/span>\"id\"<\/span>:<\/span> 105<\/span>,<\/span> \"name\"<\/span>:<\/span> \"Erin\"<\/span>,<\/span> \"gender\"<\/span>:<\/span> \"Female\"<\/span>}}::<\/span>vertex<\/span>\r\n(<\/span>5<\/span> rows<\/span>)<\/span>\r\n\r\n<\/code><\/pre>\n
          \u53ea\u663e\u793a\u7279\u5b9a\u7684\u5c5e\u6027\u503c<\/h3>\n
          \u8fd9\u91cc\u540c\u6837\u5c06\u6240\u6709Vertex\u4f5c\u4e3a\u641c\u7d22\u5bf9\u8c61\uff0c\u4f46\u4ec5\u9650\u5b9a\u8fd4\u56de\u4fe1\u606f\u4e3a\u59d3\u540d\u548c\u6027\u522b\u3002<\/p>\n
          SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>)<\/span> RETURN<\/span> a<\/span>.<\/span>name<\/span>,<\/span> a<\/span>.<\/span>gender<\/span>\r\n$$<\/span> )<\/span> as<\/span> (<\/span>name<\/span> text<\/span>,<\/span> gender<\/span> text<\/span>);<\/span>\r\n<\/code><\/pre>\n
          \u5728RETURN\u5b50\u53e5\u4e2d\uff0c\u4e0d\u518d\u4f7f\u7528a\u5168\u4f53\u6765\u6307\u5b9a\uff0c\u800c\u662f\u4f7f\u7528\u5c5e\u6027\u5217\u8868\uff0c\u5982a.name, a.gender\u3002\u540c\u65f6\uff0c\u76f8\u5e94\u5730\u5c06cypher\u51fd\u6570\u7684\u8fd4\u56de\u7c7b\u578b\u66f4\u6539\u4e3a(name text, gender text)\u3002<\/p>\n
          \u5f53\u6267\u884c\u6b64\u64cd\u4f5c\u65f6\uff0c\u4ec5\u8fd4\u56de\u540d\u79f0\u548c\u5c5e\u6027\u4f5c\u4e3a\u7ed3\u679c\u3002<\/p>\n
           name<\/span>  |<\/span> gender<\/span>\r\n-------+--------<\/span>\r\n Alice<\/span> |<\/span> Female<\/span>\r\n Bob<\/span>   |<\/span> Male<\/span>\r\n Casey<\/span> |<\/span> Female<\/span>\r\n Dave<\/span>  |<\/span> Male<\/span>\r\n Erin<\/span>  |<\/span> Female<\/span>\r\n(<\/span>5<\/span> rows<\/span>)<\/span>\r\n\r\n<\/code><\/pre>\n
          \u663e\u793a\u4e0e\u201c\u8ba8\u538c\u201d\u8fde\u63a5\u7684Vertex\u7684\u540d\u79f0\u3002<\/h2>\n
          \u6700\u540e\uff0c\u6211\u6765\u8bd5\u8bd5\u7c7b\u4f3c\u56fe\u5f62\u6570\u636e\u5e93\u7684\u641c\u7d22\u3002<\/p>\n
          SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>]<\/span>-><\/span>(<\/span>b<\/span>:<\/span>Person<\/span>)<\/span> RETURN<\/span> a<\/span>.<\/span>name<\/span>,<\/span> e<\/span>.<\/span>level<\/span>,<\/span> b<\/span>.<\/span>name<\/span>\r\n$$<\/span> )<\/span> as<\/span> (<\/span>\"from\"<\/span> text<\/span>,<\/span> level<\/span> text<\/span>,<\/span> \"to\"<\/span> text<\/span>);<\/span>\r\n<\/code><\/pre>\n
          \u8fd9\u662f\u4e00\u4e2a\u901a\u8fc7MATCH\u65b9\u6cd5\u8fde\u63a5\u201c\u5acc\u5f03\u201d\uff08Dislike\uff09\u7684\u8fb9\u7f18\u4e0e\u4eba\u7684\u9876\u70b9\u8fdb\u884c\u641c\u7d22\u7684\u547d\u4ee4\u3002
          \n\u8fd4\u56de\u641c\u7d22\u7ed3\u679c\u4e2d\u4eba\u7684\u9876\u70b9\u540d\u79f0\u4ee5\u53ca\u8fb9\u7f18\u4e0a\u8bbe\u7f6e\u7684\u7ea7\u522b\u5c5e\u6027\u7684\u503c\u3002<\/p>\n
          \u6267\u884c\u8fd9\u4e2a\u64cd\u4f5c\u5c06\u4f1a\u5f97\u5230\u4ee5\u4e0b\u7ed3\u679c\u3002<\/p>\n
           from<\/span>  |<\/span> level<\/span> |<\/span>  to<\/span>\r\n-------+-------+-------<\/span>\r\n Alice<\/span> |<\/span> high<\/span>  |<\/span> Erin<\/span>\r\n Bob<\/span>   |<\/span> mid<\/span>   |<\/span> Dave<\/span>\r\n Casey<\/span> |<\/span> high<\/span>  |<\/span> Alice<\/span>\r\n Dave<\/span>  |<\/span> low<\/span>   |<\/span> Bob<\/span>\r\n(<\/span>4<\/span> rows<\/span>)<\/span>\r\n<\/code><\/pre>\n
          \u9019\u4e00\u7bc0\u7684\u7d50\u679c\u8207\u6240\u793a\u7684\u6df7\u4e82\u7684\u611b\u6068\u5716\u76f8\u7b26\u3002<\/p>\n
          \u6700\u540e<\/h1>\n
          \u672c\u6b21\u6d3b\u52d5\u7740\u91cd\u4ecb\u7d39\u4e86\u6700\u57fa\u790e\u7684\u5167\u5bb9\uff0c\u5305\u62ec\u5b89\u88dd\u3001\u57fa\u672c\u8a2d\u5b9a\u3001\u908a\/\u9ede\u7684\u8a3b\u518a\u4ee5\u53ca\u7c21\u55ae\u7684\u641c\u7d22\u793a\u4f8b\u3002\u7576\u7136\uff0cCypher\u548cAGE\u7684\u529f\u80fd\u4e0d\u50c5\u9650\u65bc\u6b64\uff0c\u6211\u5011\u5c07\u7e7c\u7e8c\u6df1\u5165\u7814\u7a76\u76f8\u95dc\u61c9\u7528\u529f\u80fd\u3002<\/p>\n
          \u8d60\u54c1<\/h2>\n
          \u76ee\u524d\u7684AGE\u8fd8\u6709\u4e00\u4e9b\u4e0d\u7a33\u5b9a\u7684\u5730\u65b9\u3002
          \n\u76ee\u524d\u6700\u56f0\u6270\u7684\u95ee\u9898\u662f\uff0c\u5728\u4f1a\u8bdd\u4e2d\u9996\u6b21\u6267\u884c\u7684Cypher\u67e5\u8be2\u603b\u662f\u51fa\u73b0\u4e00\u4e2a\u540d\u4e3a”ERROR: unhandled cypher(cstring) function call” \u7684\u795e\u79d8\u9519\u8bef\u3002\u800c\u4e14\uff0c\u5982\u679c\u91cd\u65b0\u6267\u884c\u76f8\u540c\u7684\u67e5\u8be2\uff0c\u5219\u80fd\u591f\u6b63\u5e38\u6267\u884c\u3002\u4e3a\u4ec0\u4e48\u4f1a\u8fd9\u6837\u5462\u3002<\/p>\n
          $<\/span> psql<\/span> age<\/span>\r\npsql<\/span> (<\/span>11<\/span>.<\/span>6<\/span>)<\/span>\r\nType<\/span> \"help\"<\/span> for<\/span> help<\/span>.<\/span>\r\n\r\nage<\/span>=#<\/span> SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>]<\/span>-><\/span>(<\/span>b<\/span>:<\/span>Person<\/span>)<\/span> RETURN<\/span> a<\/span>.<\/span>name<\/span>,<\/span> e<\/span>.<\/span>level<\/span>,<\/span> b<\/span>.<\/span>name<\/span>\r\n$$<\/span> )<\/span> as<\/span> (<\/span>\"from\"<\/span> text<\/span>,<\/span> level<\/span> text<\/span>,<\/span> \"to\"<\/span> text<\/span>);<\/span>\r\nERROR<\/span>:<\/span>  unhandled<\/span> cypher<\/span>(<\/span>cstring<\/span>)<\/span> function<\/span> call<\/span>\r\nDETAIL<\/span>:<\/span>  sample<\/span>\r\nage<\/span>=#<\/span> SELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>]<\/span>-><\/span>(<\/span>b<\/span>:<\/span>Person<\/span>)<\/span> RETURN<\/span> a<\/span>.<\/span>name<\/span>,<\/span> e<\/span>.<\/span>level<\/span>,<\/span> b<\/span>.<\/span>name<\/span>\r\n$$<\/span> )<\/span> as<\/span> (<\/span>\"from\"<\/span> text<\/span>,<\/span> level<\/span> text<\/span>,<\/span> \"to\"<\/span> text<\/span>);<\/span>\r\n from<\/span>  |<\/span> level<\/span> |<\/span>  to<\/span>\r\n-------+-------+-------<\/span>\r\n Alice<\/span> |<\/span> high<\/span>  |<\/span> Erin<\/span>\r\n Bob<\/span>   |<\/span> mid<\/span>   |<\/span> Dave<\/span>\r\n Casey<\/span> |<\/span> high<\/span>  |<\/span> Alice<\/span>\r\n Dave<\/span>  |<\/span> low<\/span>   |<\/span> Bob<\/span>\r\n(<\/span>4<\/span> rows<\/span>)<\/span>\r\n<\/code><\/pre>\n
          \n
          \u8bf7\u63d0\u4f9b\u76f8\u5173\u4fe1\u606f<\/h1>\n
          \u7528\u4e8e\u6ce8\u518cVertex\u548cEdge\u7684\u6240\u6709\u67e5\u8be2\uff0c\u5728\u6837\u672c\u4e2d\u4f7f\u7528\u3002<\/h2>\n
          -- create Person Vertex<\/span>\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 101<\/span>,<\/span> name<\/span>:<\/span>'Alice'<\/span>,<\/span> gender<\/span>:<\/span>'Female'<\/span>}<\/span> )<\/span>\r\n    RETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 102<\/span>,<\/span> name<\/span>:<\/span>'Bob'<\/span>,<\/span> gender<\/span>:<\/span>'Male'<\/span>}<\/span> )<\/span>\r\n    RETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 103<\/span>,<\/span> name<\/span>:<\/span>'Casey'<\/span>,<\/span> gender<\/span>:<\/span>'Female'<\/span>}<\/span> )<\/span>\r\n    RETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 104<\/span>,<\/span> name<\/span>:<\/span>'Dave'<\/span>,<\/span> gender<\/span>:<\/span>'Male'<\/span>}<\/span> )<\/span>\r\n    RETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nCREATE<\/span> p<\/span> =<\/span> (<\/span> :<\/span>Person<\/span> {<\/span>id<\/span>:<\/span> 105<\/span>,<\/span> name<\/span>:<\/span>'Erin'<\/span>,<\/span> gender<\/span>:<\/span>'Female'<\/span>}<\/span> )<\/span>\r\n    RETURN<\/span> p<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\n-- Create Edge<\/span>\r\n-- From Alice<\/span>\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Alice'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Bob'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Alice'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Erin'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\n-- From Bob<\/span>\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Bob'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Erin'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Bob'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Dave'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>{<\/span>level<\/span>:<\/span> 'mid'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\n-- From Casey<\/span>\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Casey'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Dave'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Casey'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Alice'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\n-- Dave<\/span>\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Dave'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Alice'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'high'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Dave'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Bob'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Dislike<\/span>{<\/span>level<\/span>:<\/span> 'low'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\n-- From Erin<\/span>\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Erin'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Dave'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'mid'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n\r\nSELECT<\/span> *<\/span> FROM<\/span> cypher<\/span>(<\/span>'sample'<\/span>,<\/span> $$<\/span>\r\nMATCH<\/span> (<\/span>a<\/span>:<\/span>Person<\/span>),<\/span> (<\/span>b<\/span>:<\/span>Person<\/span>)<\/span>\r\nWHERE<\/span> a<\/span>.<\/span>name<\/span> =<\/span> 'Erin'<\/span> AND<\/span> b<\/span>.<\/span>name<\/span> =<\/span> 'Alice'<\/span>\r\nCREATE<\/span> (<\/span>a<\/span>)<\/span>-<\/span>[<\/span>e<\/span>:<\/span>Like<\/span>{<\/span>level<\/span>:<\/span> 'mid'<\/span>}]<\/span>-><\/span>(<\/span>b<\/span>)<\/span>\r\nRETURN<\/span> e<\/span>\r\n$$<\/span>)<\/span> as<\/span> (<\/span>p<\/span> agtype<\/span>);<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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