{"id":21784,"date":"2024-01-02T15:15:35","date_gmt":"2024-01-02T15:15:35","guid":{"rendered":"https:\/\/server.hk\/blog\/21784\/"},"modified":"2024-11-14T10:27:05","modified_gmt":"2024-11-14T02:27:05","slug":"how-to-fix-mongodb-error-code-201-cannotbuildindexkeys","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21784\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys<\/h1>\n

MongoDB \u662f\u4e00\u500b\u6d41\u884c\u7684 NoSQL \u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u9ad8\u6027\u80fd\u3001\u53ef\u64f4\u5c55\u6027\u548c\u9748\u6d3b\u6027\u3002\u7136\u800c\uff0c\u50cf\u5176\u4ed6\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u932f\u8aa4\uff0c\u9019\u4e9b\u932f\u8aa4\u53ef\u80fd\u6703\u59a8\u7919\u5176\u6b63\u5e38\u904b\u884c\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u539f\u56e0\u4e26\u63d0\u4f9b\u9010\u6b65\u89e3\u6c7a\u65b9\u6848\u4f86\u4fee\u5fa9\u5b83\u3002<\/p>\n

\u7406\u89e3 MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys<\/h2>\n

\u7576 MongoDB \u56e0\u70ba\u7121\u6548\u6216\u4e0d\u517c\u5bb9\u7684\u6578\u64da\u985e\u578b\u800c\u7121\u6cd5\u5efa\u7acb\u7d22\u5f15\u9375\u6642\uff0c\u5c31\u6703\u767c\u751f MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys\u3002\u7576\u5617\u8a66\u5728\u5305\u542b\u4e0d\u540c\u6578\u64da\u985e\u578b\u5b57\u6bb5\u7684\u6587\u6a94\u7684\u96c6\u5408\u4e0a\u5275\u5efa\u7d22\u5f15\u6642\uff0c\u901a\u5e38\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/p>\n

\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u6709\u4e00\u500b\u540d\u70ba “users” \u7684\u96c6\u5408\uff0c\u4e26\u4e14\u4f60\u5617\u8a66\u5728 “age” \u5b57\u6bb5\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u4f46\u67d0\u4e9b\u6587\u6a94\u7684 “age” \u5b57\u6bb5\u662f\u5b57\u7b26\u4e32\u985e\u578b\uff0c\u800c\u5176\u4ed6\u6587\u6a94\u5247\u662f\u6574\u6578\u985e\u578b\uff0cMongoDB \u5c07\u6703\u62cb\u51fa CannotBuildIndexKeys \u932f\u8aa4\u3002<\/p>\n

\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 \u7684\u9010\u6b65\u89e3\u6c7a\u65b9\u6848<\/h2>\n

\u6b65\u9a5f 1\uff1a\u8b58\u5225\u53d7\u5f71\u97ff\u7684\u96c6\u5408<\/h3>\n

\u89e3\u6c7a\u6b64\u932f\u8aa4\u7684\u7b2c\u4e00\u6b65\u662f\u8b58\u5225\u9020\u6210\u554f\u984c\u7684\u96c6\u5408\u3002\u4f60\u53ef\u4ee5\u901a\u904e\u5728 MongoDB shell \u4e2d\u904b\u884c\u4ee5\u4e0b\u547d\u4ee4\u4f86\u505a\u5230\u9019\u4e00\u9ede\uff1a<\/p>\n

use your_database_name\r\ndb.your_collection_name.getIndexes()<\/code><\/pre>\n
\u6b64\u547d\u4ee4\u5c07\u986f\u793a\u96c6\u5408\u4e2d\u6240\u6709\u7684\u7d22\u5f15\u3002\u67e5\u627e\u53ef\u80fd\u5c0e\u81f4\u932f\u8aa4\u7684\u7d22\u5f15\u3002<\/p>\n
\u6b65\u9a5f 2\uff1a\u5206\u6790\u6578\u64da\u985e\u578b<\/h3>\n
\u4e00\u65e6\u4f60\u8b58\u5225\u4e86\u6709\u554f\u984c\u7684\u96c6\u5408\uff0c\u5c31\u9700\u8981\u5206\u6790\u5c0e\u81f4\u932f\u8aa4\u7684\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u6aa2\u67e5\u6578\u64da\u985e\u578b\uff1a<\/p>\n
db.your_collection_name.find({}).forEach(function(doc) {\r\n    for (var field in doc) {\r\n        print(field + \": \" + typeof doc[field]);\r\n    }\r\n    break;\r\n})<\/code><\/pre>\n
\u6b64\u547d\u4ee4\u5c07\u6253\u5370\u96c6\u5408\u4e2d\u7b2c\u4e00\u500b\u6587\u6a94\u7684\u5b57\u6bb5\u540d\u7a31\u53ca\u5176\u76f8\u61c9\u7684\u6578\u64da\u985e\u578b\u3002\u5206\u6790\u8f38\u51fa\u4e26\u8b58\u5225\u4efb\u4f55\u5177\u6709\u4e0d\u4e00\u81f4\u6578\u64da\u985e\u578b\u7684\u5b57\u6bb5\u3002<\/p>\n
\u6b65\u9a5f 3\uff1a\u4fee\u6b63\u6578\u64da\u985e\u578b<\/h3>\n
\u4e00\u65e6\u4f60\u8b58\u5225\u4e86\u5177\u6709\u4e0d\u4e00\u81f4\u6578\u64da\u985e\u578b\u7684\u5b57\u6bb5\uff0c\u5c31\u9700\u8981\u4fee\u6b63\u5b83\u5011\u3002\u6709\u5169\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u89e3\u6c7a\u6b64\u554f\u984c\uff1a<\/p>\n
\u65b9\u6cd5 1\uff1a\u8f49\u63db\u4e0d\u4e00\u81f4\u7684\u5b57\u6bb5<\/h4>\n
\u5982\u679c\u4e0d\u4e00\u81f4\u7684\u5b57\u6bb5\u5305\u542b\u517c\u5bb9\u7684\u6578\u64da\u985e\u578b\uff0c\u4f60\u53ef\u4ee5\u5c07\u5b83\u5011\u8f49\u63db\u70ba\u4e00\u81f4\u7684\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5982\u679c “age” \u5b57\u6bb5\u540c\u6642\u5305\u542b\u5b57\u7b26\u4e32\u548c\u6574\u6578\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c07\u6240\u6709\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u6574\u6578\uff1a<\/p>\n
db.your_collection_name.find({ \"age\": { $type: \"string\" } }).forEach(function(doc) {\r\n    doc.age = parseInt(doc.age);\r\n    db.your_collection_name.save(doc);\r\n})<\/code><\/pre>\n
\u6b64\u547d\u4ee4\u67e5\u627e\u6240\u6709 “age” \u5b57\u6bb5\u985e\u578b\u70ba\u5b57\u7b26\u4e32\u7684\u6587\u6a94\uff0c\u4e26\u4f7f\u7528 parseInt() \u51fd\u6578\u5c07\u5176\u8f49\u63db\u70ba\u6574\u6578\u3002\u78ba\u4fdd\u5c07 “your_collection_name” \u66ff\u63db\u70ba\u4f60\u7684\u5be6\u969b\u96c6\u5408\u540d\u7a31\u3002<\/p>\n
\u65b9\u6cd5 2\uff1a\u79fb\u9664\u4e0d\u4e00\u81f4\u7684\u5b57\u6bb5<\/h4>\n
\u5982\u679c\u4e0d\u4e00\u81f4\u7684\u5b57\u6bb5\u7121\u6cd5\u8f49\u63db\u70ba\u4e00\u81f4\u7684\u6578\u64da\u985e\u578b\uff0c\u4f60\u53ef\u4ee5\u5c07\u5b83\u5011\u5f9e\u96c6\u5408\u4e2d\u79fb\u9664\u3002\u7136\u800c\uff0c\u5728\u79fb\u9664\u4efb\u4f55\u5b57\u6bb5\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u5099\u4efd\u4f60\u7684\u6578\u64da\u3002\u8981\u79fb\u9664\u4e0d\u4e00\u81f4\u7684\u5b57\u6bb5\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
db.your_collection_name.update({}, { $unset: { \"field_name\": \"\" } }, { multi: true })<\/code><\/pre>\n
\u6b64\u547d\u4ee4\u5c07\u5f9e\u96c6\u5408\u4e2d\u7684\u6240\u6709\u6587\u6a94\u4e2d\u79fb\u9664 “field_name”\u3002\u5c07 “your_collection_name” \u66ff\u63db\u70ba\u4f60\u7684\u5be6\u969b\u96c6\u5408\u540d\u7a31\uff0c\u4e26\u5c07 “field_name” \u66ff\u63db\u70ba\u4e0d\u4e00\u81f4\u5b57\u6bb5\u7684\u540d\u7a31\u3002<\/p>\n
\u6b65\u9a5f 4\uff1a\u91cd\u5efa\u7d22\u5f15<\/h3>\n
\u5728\u4fee\u6b63\u6578\u64da\u985e\u578b\u6216\u79fb\u9664\u4e0d\u4e00\u81f4\u5b57\u6bb5\u4e4b\u5f8c\uff0c\u4f60\u73fe\u5728\u53ef\u4ee5\u91cd\u5efa\u7d22\u5f15\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u522a\u9664\u73fe\u6709\u7d22\u5f15\uff1a<\/p>\n
db.your_collection_name.dropIndex(\"index_name\")<\/code><\/pre>\n
\u5c07 “your_collection_name” \u66ff\u63db\u70ba\u4f60\u7684\u5be6\u969b\u96c6\u5408\u540d\u7a31\uff0c\u4e26\u5c07 “index_name” \u66ff\u63db\u70ba\u5c0e\u81f4\u932f\u8aa4\u7684\u7d22\u5f15\u540d\u7a31\u3002<\/p>\n
\u6700\u5f8c\uff0c\u4f7f\u7528\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\u91cd\u65b0\u5275\u5efa\u7d22\u5f15\uff1a<\/p>\n
db.your_collection_name.createIndex({ \"field_name\": 1 })<\/code><\/pre>\n
\u5c07 “your_collection_name” \u66ff\u63db\u70ba\u4f60\u7684\u5be6\u969b\u96c6\u5408\u540d\u7a31\uff0c\u4e26\u5c07 “field_name” \u66ff\u63db\u70ba\u4f60\u60f3\u8981\u5275\u5efa\u7d22\u5f15\u7684\u5b57\u6bb5\u540d\u7a31\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys \u767c\u751f\u5728 MongoDB \u56e0\u7121\u6548\u6216\u4e0d\u517c\u5bb9\u7684\u6578\u64da\u985e\u578b\u800c\u7121\u6cd5\u5efa\u7acb\u7d22\u5f15\u9375\u6642\u3002\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff1a<\/p>\n
    \n
  1. \u4f7f\u7528 getIndexes()<\/code> \u547d\u4ee4\u8b58\u5225\u53d7\u5f71\u97ff\u7684\u96c6\u5408\u3002<\/li>\n
  2. \u4f7f\u7528 typeof<\/code> \u64cd\u4f5c\u7b26\u5206\u6790\u5c0e\u81f4\u932f\u8aa4\u7684\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u3002<\/li>\n
  3. \u901a\u904e\u8f49\u63db\u4e0d\u4e00\u81f4\u7684\u5b57\u6bb5\u6216\u79fb\u9664\u5b83\u5011\u4f86\u4fee\u6b63\u6578\u64da\u985e\u578b\u3002<\/li>\n
  4. \u901a\u904e\u522a\u9664\u4e26\u91cd\u65b0\u5275\u5efa\u7d22\u5f15\u4f86\u91cd\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ol>\n
    \u5982\u679c\u4f60\u9047\u5230 MongoDB \u932f\u8aa4\u4ee3\u78bc – 201 – CannotBuildIndexKeys\uff0c\u8acb\u6309\u7167\u9019\u4e9b\u6b65\u9a5f\u89e3\u6c7a\u554f\u984c\uff0c\u78ba\u4fdd\u4f60\u7684 MongoDB \u6578\u64da\u5eab\u9806\u5229\u904b\u884c\u3002<\/p>\n
    \u6709\u95dc MongoDB \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8acb\u8003\u616e \u9999\u6e2f VPS \u8a17\u7ba1<\/a>\u3002\u6211\u5011\u53ef\u9760\u4e14\u53ef\u64f4\u5c55\u7684 VPS \u8a17\u7ba1\u670d\u52d9\u53ef\u4ee5\u5e6b\u52a9\u4f60\u512a\u5316 MongoDB \u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u4fee\u5fa9 MongoDB \u932f\u8aa4\u4ee3...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-21784","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=21784"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21784\/revisions"}],"predecessor-version":[{"id":23588,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21784\/revisions\/23588"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}