{"id":743,"date":"2019-05-01T17:55:30","date_gmt":"2019-05-01T09:55:30","guid":{"rendered":"http:\/\/www.eait.co\/?p=743"},"modified":"2019-05-01T17:55:30","modified_gmt":"2019-05-01T09:55:30","slug":"mongodb","status":"publish","type":"post","link":"https:\/\/notes.coremix.net\/?p=743","title":{"rendered":"mongoDB"},"content":{"rendered":"
\u8fdb\u5165\u6570\u636e\u5e93: mongo<\/div>\n
\u9000\u51fa\u6570\u636e\u5e93:exit<\/div>\n
\u00a0mongoDB\u00a0\u7684\u547d\u4ee4\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684<\/div>\n
<\/div>\n
\u663e\u793a\u6240\u6709\u5e93: show dbs<\/div>\n
\u5207\u6362\/\u521b\u5efa\u5e93: use\u00a0\u6570\u636e\u5e93\u540d\u79f0<\/div>\n
\u67e5\u770b\u6240\u5728\u5e93:\u00a0db<\/div>\n
\u5220\u9664\u5e93: db.dropDatabase()<\/div>\n
<\/div>\n
<\/div>\n
\u663e\u793a\u5f53\u524d\u6570\u636e\u5e93\u96c6\u5408: show collcetions<\/div>\n
\u521b\u5efa\u96c6\u5408:\u00a0 db.createCollection(name)\u00a0 \u00a0#name\u9700\u8981\u52a0\u5f15\u53f7<\/div>\n
db.createCollection(‘student’)<\/div>\n
\u5220\u9664\u96c6\u5408: db.\u96c6\u5408\u540d\u79f0.drop()<\/div>\n
db.student2.drop()<\/div>\n
<\/div>\n
<\/div>\n
\u6587\u6863(\u6570\u636e)\u64cd\u4f5c:<\/div>\n
db.student.insert({name:’xiaoming’,age:18})\u00a0\u91cc\u9762\u7684name\u4e0d\u52a0\u5f15\u53f7,\u5728pycharm\u4e2d\u9700\u8981\u52a0\u5f15\u53f7<\/div>\n
\u6dfb\u52a0\u6587\u6863\u65f6,\u5982\u679c\u4e0d\u6307\u5b9a_id\u53c2\u6570,MongoDB\u4f1a\u4e3a\u6587\u6863\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684ObjectID<\/div>\n
db.student.insert({‘_id’:1,name:’xiaoming’,age:18})<\/div>\n
\u6dfb\u52a0\u591a\u6761\u6587\u6863:\u00a0db.\u8868\u540d\u79f0.insert({},{},{})<\/div>\n
db.student.insert([{name:’xiaoming’,age:15,zex:’nan’},{name:’xz’,age:16,zex:’nv’},{name:’mr’,age:88,zex:’nan’}])\u00a0 #\u5fc5\u987b\u8981\u6dfb\u52a0\u6700\u5916\u5c42\u7684\u4e2d\u62ec\u53f7\u624d\u80fd\u8868\u793a\u63d2\u5165\u591a\u884c,\u5426\u5219\u53ea\u80fd\u63d2\u5165\u7b2c\u4e00\u4e2a\u6570\u636e<\/div>\n
<\/div>\n
<\/div>\n
\u67e5\u8be2\u6587\u6863(\u6570\u636e):<\/div>\n
\u67e5\u770b\u96c6\u5408\u4e2d\u7684\u5168\u90e8\u6570\u636e: db.student.find()<\/div>\n
\u683c\u5f0f\u5316\u663e\u793a: db.student.find().pretty()<\/div>\n
\u67e5\u8be2\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e: db.student.find({name:’xiaoming})<\/div>\n
db.student.find({age:15})<\/div>\n
<\/div>\n
\u5669\u68a6\u6761\u4ef6:<\/div>\n
and\u6761\u4ef6: {$and: [{express1},{express2},{express3}]}<\/div>\n
or\u6761\u4ef6: {$or: [{express1},{express2},{express3}]}<\/div>\n
and\u548cor\u6df7\u7528:<\/div>\n
db.table.find({$or:[{$and:[{sex:’\u5973’}, {age:18}]},{$and:[{sex:’\u7537’}, {age:{$gt:18}}]}]})<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\u64cd\u4f5c\u7b26:<\/div>\n
\u00a0$ne\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u4e0d\u7b49\u4e8e<\/div>\n
$gt\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5927\u4e8e<\/div>\n
$lt\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5c0f\u4e8e<\/div>\n
$gte\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5927\u4e8e\u7b49\u4e8e<\/div>\n
$lte\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5c0f\u4e8e\u7b49\u4e8e<\/div>\n
<\/div>\n
db.student.find({‘age’:{‘$ne’:15}})\u00a0 \u00a0#\u6b64\u5904\u7684age\u00a0\u548c$ne\u90fd\u8981\u52a0\u5f15\u53f7<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\u4fee\u6539\u6587\u6863(\u6570\u636e)<\/div>\n
db.\u96c6\u5408\u540d\u79f0.update(<query>,<update>,{multi:<boolean>})<\/div>\n
\u4fee\u6539\u4e00\u6761\u6570\u636e: db.student.update({sex:’nan’},{age:20})<\/div>\n
\u5c06sex\u4e3anan\u7684\u5e74\u9f84\u4fee\u6539\u621020\u00a0 #(\u540c\u65f6\u5220\u9664\u8be5\u6761\u4fe1\u606f\u7684\u5176\u4ed6\u4fe1\u606f,\u5305\u62ecsex)<\/div>\n
\u6307\u5b9a\u5c5e\u6027\u4fee\u6539: {$set: {age:20}}<\/div>\n
db.student.update({name:’xiaoming’},{$set:{age:66,sex:’xx’}}) #\u6b64\u8bed\u53e5\u6709\u5219\u4fee\u6539\u65e0\u5219\u6dfb\u52a0,\u5e76\u4e14\u53ea\u4fee\u6539\u7b2c\u4e00\u6761<\/div>\n
\u66f4\u65b0\u96c6\u5408\u4e2d\u6240\u6709\u6ee1\u8db3\u6761\u4ef6\u7684\u6587\u6863:{multi:true}<\/div>\n
db.student.update({sex:’nan’},{$set:{sex:’nv’}},{multi:true})<\/div>\n
<\/div>\n
<\/div>\n
\u5220\u9664\u6587\u6863(\u6570\u636e):<\/div>\n
\u5220\u9664\u96c6\u5408\u4e2d\u6240\u6709\u7684\u6587\u6863:<\/div>\n
db.student.remove({})<\/div>\n
\u5220\u9664\u96c6\u5408\u4e2d\u6ee1\u8db3\u6761\u4ef6\u7684\u6587\u6863:<\/div>\n
db.student.remove({sex:’nan’})<\/div>\n
\u53ea\u5220\u9664\u96c6\u5408\u4e2d\u6ee1\u8db3\u6761\u4ef6\u7684\u7b2c\u4e00\u6587\u6863:<\/div>\n
db.student.remove({sex:’nan’},{justOne:true})<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

\u8fdb\u5165\u6570\u636e\u5e93: mongo \u9000\u51fa\u6570\u636e\u5e93:exit \u00a0mongoDB\u00a0\u7684\u547d\u4ee4\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684 \u663e\u793a\u6240\u6709\u5e93: show […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-743","post","type-post","status-publish","format-standard","hentry","category-python_note"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=743"}],"version-history":[{"count":1,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/743\/revisions"}],"predecessor-version":[{"id":744,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/743\/revisions\/744"}],"wp:attachment":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}