{"id":1090,"date":"2023-03-12T11:26:43","date_gmt":"2023-03-12T03:26:43","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1090"},"modified":"2023-04-29T11:28:24","modified_gmt":"2023-04-29T03:28:24","slug":"mongodb-conditional-operator","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/12\/mongodb-conditional-operator\/","title":{"rendered":"MongoDB\u6761\u4ef6\u64cd\u4f5c\u7b26"},"content":{"rendered":"<p>\u6761\u4ef6\u64cd\u4f5c\u7b26\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u8868\u8fbe\u5f0f\u5e76\u4eceMongoDB\u96c6\u5408\u4e2d\u83b7\u53d6\u6570\u636e\u3002MongoDB\u4e2d\u6761\u4ef6\u64cd\u4f5c\u7b26\u6709\uff1a<\/p>\n<ul>\n<li>(&gt;) \u5927\u4e8e &#8211; $gt<\/li>\n<li>(&lt;) \u5c0f\u4e8e &#8211; $lt<\/li>\n<li>(&gt;=) \u5927\u4e8e\u7b49\u4e8e &#8211; $gte<\/li>\n<li>(&lt;=) \u5c0f\u4e8e\u7b49\u4e8e &#8211; $lte<\/li>\n<li>(=) \u7b49\u4e8e &#8211; $eq<\/li>\n<li>(!=) \u4e0d\u7b49\u4e8e &#8211; $ne<\/li>\n<\/ul>\n<p><!-- more --><\/p>\n<p>\u6211\u4eec\u4f7f\u7528\u7684\u6570\u636e\u5e93\u540d\u79f0\u4e3a &quot;appblog&quot;\uff0c\u96c6\u5408\u540d\u79f0\u4e3a &quot;col&quot;<\/p>\n<p>\u4e3a\u4e86\u65b9\u4fbf\u6d4b\u8bd5\uff0c\u9996\u5148\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6e05\u7a7a\u96c6\u5408 &quot;col&quot; \u7684\u6570\u636e\uff1a<\/p>\n<pre><code class=\"language-javascript\">db.col.remove({})<\/code><\/pre>\n<p>\u63d2\u5165\u4ee5\u4e0b\u6570\u636e<\/p>\n<pre><code class=\"language-javascript\">> db.col.insert({\n    title: &#039;PHP&#039;, \n    description: &#039;PHP \u662f\u4e00\u79cd\u521b\u5efa\u52a8\u6001\u4ea4\u4e92\u6027\u7ad9\u70b9\u7684\u5f3a\u6709\u529b\u7684\u670d\u52a1\u5668\u7aef\u811a\u672c\u8bed\u8a00\u3002&#039;,\n    by: &#039;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&#039;,\n    url: &#039;http:\/\/www.appblog.cn&#039;,\n    tags: [&#039;php&#039;],\n    likes: 200\n})\n> db.col.insert({title: &#039;Java&#039;, \n    description: &#039;Java \u662f\u7531Sun\u516c\u53f8\u4e8e1995\u5e745\u6708\u63a8\u51fa\u7684\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002&#039;,\n    by: &#039;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&#039;,\n    url: &#039;http:\/\/www.appblog.cn&#039;,\n    tags: [&#039;java&#039;],\n    likes: 150\n})\n> db.col.insert({title: &#039;MongoDB&#039;, \n    description: &#039;MongoDB \u662f\u4e00\u4e2a Nosql \u6570\u636e\u5e93&#039;,\n    by: &#039;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&#039;,\n    url: &#039;http:\/\/www.appblog.cn&#039;,\n    tags: [&#039;mongodb&#039;],\n    likes: 100\n})<\/code><\/pre>\n<p>\u4f7f\u7528find()\u547d\u4ee4\u67e5\u770b\u6570\u636e\uff1a<\/p>\n<pre><code class=\"language-javascript\">> db.col.find()\n{ &quot;_id&quot; : ObjectId(&quot;5aefe63c2d2577acadf1e0d2&quot;), &quot;title&quot; : &quot;PHP&quot;, &quot;description&quot; : &quot;PHP \u662f\u4e00\u79cd\u521b\u5efa\u52a8\u6001\u4ea4\u4e92\u6027\u7ad9\u70b9\u7684\u5f3a\u6709\u529b\u7684\u670d\u52a1\u5668\u7aef\u811a\u672c\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;php&quot; ], &quot;likes&quot; : 200 }\n{ &quot;_id&quot; : ObjectId(&quot;5aefe6462d2577acadf1e0d3&quot;), &quot;title&quot; : &quot;Java&quot;, &quot;description&quot; : &quot;Java \u662f\u7531Sun\u516c\u53f8\u4e8e1995\u5e745\u6708\u63a8\u51fa\u7684\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;java&quot; ], &quot;likes&quot; : 150 }\n{ &quot;_id&quot; : ObjectId(&quot;5aefe64f2d2577acadf1e0d4&quot;), &quot;title&quot; : &quot;MongoDB&quot;, &quot;description&quot; : &quot;MongoDB \u662f\u4e00\u4e2a Nosql \u6570\u636e\u5e93&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;mongodb&quot; ], &quot;likes&quot; : 100 }<\/code><\/pre>\n<h2>MongoDB (&gt;) \u5927\u4e8e\u64cd\u4f5c\u7b26 &#8211; $gt<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u83b7\u53d6 &quot;col&quot; \u96c6\u5408\u4e2d &quot;likes&quot; \u5927\u4e8e 100 \u7684\u6570\u636e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-javascript\">db.col.find({&quot;likes&quot; : {$gt : 100}})<\/code><\/pre>\n<p>\u7c7b\u4f3c\u4e8eSQL\u8bed\u53e5\uff1a<\/p>\n<pre><code class=\"language-sql\">select * from col where likes &gt; 100;<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-javascript\">> db.col.find({&quot;likes&quot; : {$gt : 100}})\n{ &quot;_id&quot; : ObjectId(&quot;5aefe63c2d2577acadf1e0d2&quot;), &quot;title&quot; : &quot;PHP&quot;, &quot;description&quot; : &quot;PHP \u662f\u4e00\u79cd\u521b\u5efa\u52a8\u6001\u4ea4\u4e92\u6027\u7ad9\u70b9\u7684\u5f3a\u6709\u529b\u7684\u670d\u52a1\u5668\u7aef\u811a\u672c\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;php&quot; ], &quot;likes&quot; : 200 }\n{ &quot;_id&quot; : ObjectId(&quot;5aefe6462d2577acadf1e0d3&quot;), &quot;title&quot; : &quot;Java&quot;, &quot;description&quot; : &quot;Java \u662f\u7531Sun\u516c\u53f8\u4e8e1995\u5e745\u6708\u63a8\u51fa\u7684\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;java&quot; ], &quot;likes&quot; : 150 }\n> <\/code><\/pre>\n<h2>MongoDB\uff08&gt;=\uff09\u5927\u4e8e\u7b49\u4e8e\u64cd\u4f5c\u7b26 &#8211; $gte<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u83b7\u53d6 &quot;col&quot; \u96c6\u5408\u4e2d &quot;likes&quot; \u5927\u4e8e\u7b49\u4e8e 100 \u7684\u6570\u636e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-javascript\">db.col.find({likes : {$gte : 150}})<\/code><\/pre>\n<p>\u7c7b\u4f3c\u4e8eSQL\u8bed\u53e5\uff1a<\/p>\n<pre><code class=\"language-sql\">select * from col where likes &gt;= 150;<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-javascript\">> db.col.find({likes : {$gte : 100}})\n{ &quot;_id&quot; : ObjectId(&quot;5aefe63c2d2577acadf1e0d2&quot;), &quot;title&quot; : &quot;PHP&quot;, &quot;description&quot; : &quot;PHP \u662f\u4e00\u79cd\u521b\u5efa\u52a8\u6001\u4ea4\u4e92\u6027\u7ad9\u70b9\u7684\u5f3a\u6709\u529b\u7684\u670d\u52a1\u5668\u7aef\u811a\u672c\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;php&quot; ], &quot;likes&quot; : 200 }\n{ &quot;_id&quot; : ObjectId(&quot;5aefe6462d2577acadf1e0d3&quot;), &quot;title&quot; : &quot;Java&quot;, &quot;description&quot; : &quot;Java \u662f\u7531Sun\u516c\u53f8\u4e8e1995\u5e745\u6708\u63a8\u51fa\u7684\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;java&quot; ], &quot;likes&quot; : 150 }\n> <\/code><\/pre>\n<h2>MongoDB (&lt;) \u5c0f\u4e8e\u64cd\u4f5c\u7b26 &#8211; $lt<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u83b7\u53d6 &quot;col&quot; \u96c6\u5408\u4e2d &quot;likes&quot; \u5c0f\u4e8e 150 \u7684\u6570\u636e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-javascript\">db.col.find({likes : {$lt : 150}})<\/code><\/pre>\n<p>\u7c7b\u4f3c\u4e8eSQL\u8bed\u53e5\uff1a<\/p>\n<pre><code class=\"language-sql\">select * from col where likes &lt; 150;<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-javascript\">> db.col.find({likes : {$lt : 150}})\n{ &quot;_id&quot; : ObjectId(&quot;5aefe64f2d2577acadf1e0d4&quot;), &quot;title&quot; : &quot;MongoDB&quot;, &quot;description&quot; : &quot;MongoDB \u662f\u4e00\u4e2a Nosql \u6570\u636e\u5e93&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;mongodb&quot; ], &quot;likes&quot; : 100 }\n> <\/code><\/pre>\n<h2>MongoDB (&lt;=) \u5c0f\u4e8e\u64cd\u4f5c\u7b26 &#8211; $lte<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u83b7\u53d6 &quot;col&quot; \u96c6\u5408\u4e2d &quot;likes&quot; \u5c0f\u4e8e\u7b49\u4e8e 150 \u7684\u6570\u636e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-javascript\">db.col.find({likes : {$lte : 150}})<\/code><\/pre>\n<p>\u7c7b\u4f3c\u4e8eSQL\u8bed\u53e5\uff1a<\/p>\n<pre><code class=\"language-sql\">select * from col where likes &lt;= 150;<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-javascript\">> db.col.find({likes : {$lte : 150}})\n{ &quot;_id&quot; : ObjectId(&quot;5aefe6462d2577acadf1e0d3&quot;), &quot;title&quot; : &quot;Java&quot;, &quot;description&quot; : &quot;Java \u662f\u7531Sun\u516c\u53f8\u4e8e1995\u5e745\u6708\u63a8\u51fa\u7684\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;java&quot; ], &quot;likes&quot; : 150 }\n{ &quot;_id&quot; : ObjectId(&quot;5aefe64f2d2577acadf1e0d4&quot;), &quot;title&quot; : &quot;MongoDB&quot;, &quot;description&quot; : &quot;MongoDB \u662f\u4e00\u4e2a Nosql \u6570\u636e\u5e93&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;mongodb&quot; ], &quot;likes&quot; : 100 }\n> <\/code><\/pre>\n<h2>MongoDB \u4f7f\u7528 (&lt;) \u548c (&gt;) \u67e5\u8be2 &#8211; <code>$lt<\/code> \u548c <code>$gt<\/code><\/h2>\n<p>\u5982\u679c\u9700\u8981\u83b7\u53d6 &quot;col&quot; \u96c6\u5408\u4e2d &quot;likes&quot; \u5927\u4e8e100\uff0c\u5c0f\u4e8e 200 \u7684\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-javascript\">db.col.find({likes : {$lt :200, $gt : 100}})<\/code><\/pre>\n<p>\u7c7b\u4f3c\u4e8eSQL\u8bed\u53e5\uff1a<\/p>\n<pre><code class=\"language-sql\">select * from col where likes &gt; 100 AND  likes &lt; 200;<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-javascript\">> db.col.find({likes : {$lt :200, $gt : 100}})\n{ &quot;_id&quot; : ObjectId(&quot;5aefe6462d2577acadf1e0d3&quot;), &quot;title&quot; : &quot;Java&quot;, &quot;description&quot; : &quot;Java \u662f\u7531Sun\u516c\u53f8\u4e8e1995\u5e745\u6708\u63a8\u51fa\u7684\u9ad8\u7ea7\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002&quot;, &quot;by&quot; : &quot;APP\u5f00\u53d1\u6280\u672f\u535a\u5ba2&quot;, &quot;url&quot; : &quot;http:\/\/www.appblog.cn&quot;, &quot;tags&quot; : [ &quot;java&quot; ], &quot;likes&quot; : 150 }\n> <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6761\u4ef6\u64cd\u4f5c\u7b26\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u8868\u8fbe\u5f0f\u5e76\u4eceMongoDB\u96c6\u5408\u4e2d\u83b7\u53d6\u6570\u636e\u3002MongoDB\u4e2d\u6761\u4ef6\u64cd\u4f5c\u7b26\u6709\uff1a (&gt;) \u5927 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[300],"tags":[],"class_list":["post-1090","post","type-post","status-publish","format-standard","hentry","category-mongodb"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1090"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1090\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}