{"id":22933,"date":"2024-11-21T16:03:54","date_gmt":"2024-11-21T08:03:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/22933\/"},"modified":"2024-11-21T16:03:54","modified_gmt":"2024-11-21T08:03:54","slug":"thinkphp5%e4%b8%ad%e6%9f%a5%e8%af%a2%e6%96%b9%e6%b3%95%e6%80%8e%e4%b9%88%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/22933\/","title":{"rendered":"ThinkPHP5\u4e2d\u67e5\u8be2\u65b9\u6cd5\u600e\u4e48\u4f7f\u7528"},"content":{"rendered":"

\u4e00\u3001\u67e5\u8be2\u4e4b\u548c\u7684\u4f7f\u7528\u65b9\u6cd5<\/strong><\/p>\n

ThinkPHP5\u4e2d\u53ef\u4ee5\u901a\u8fc7query\u548csum\u65b9\u6cd5\u5b9e\u73b0\u67e5\u8be2\u4e4b\u548c\u3002query\u65b9\u6cd5\u88ab\u7528\u4e8e\u5efa\u7acbSQL\u8bed\u53e5\uff0c\u800csum\u65b9\u6cd5\u5219\u7528\u4e8e\u6267\u884cSQL\u8bed\u53e5\u5e76\u4ece\u67e5\u8be2\u7ed3\u679c\u4e2d\u83b7\u53d6\u603b\u548c\u3002<\/p>\n

\u5177\u4f53\u800c\u8a00\uff0c\u67e5\u8be2\u4e4b\u548c\u7684\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n

\/\/\u5bfc\u5165\u547d\u540d\u7a7a\u95f4<br>use thinkDb;<br><br>\/\/\u6784\u5efaSQL\u8bed\u53e5<br>$result = Db::query('SELECT SUM(column_name) AS total FROM table_name');<br><br>\/\/\u53d6\u51fa\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u548c<br>$sum = $result[0]['total'];<br><\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6211\u4eec\u5728\u4ee5\u4e0a\u4ee3\u7801\u4e2d\u5148\u5f15\u7528\u4e86thinkDb\u547d\u540d\u7a7a\u95f4\uff0c\u63a5\u7740\u4f7f\u7528query\u65b9\u6cd5\u7f16\u5199\u4e86SQL\u8bed\u53e5\u3002\u5176\u4e2d\uff0cSUM(column_name)\u7528\u4e8e\u8ba1\u7b97\u5217column_name\u4e2d\u6240\u6709\u503c\u7684\u548c\uff0cAS total\u7528\u4e8e\u5c06\u8ba1\u7b97\u7ed3\u679c\u7684\u540d\u79f0\u8bbe\u4e3atotal\u3002\u7136\u540e\uff0c\u6211\u4eec\u6267\u884cquery\u65b9\u6cd5\uff0c\u6765\u67e5\u8be2SQL\u8bed\u53e5\u5e76\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u548c\uff0c\u5373$result0\u3002<\/p>\n
\u4e8c\u3001\u67e5\u8be2\u4e4b\u548c\u7684\u5b9e\u4f8b<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
\u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u5b9e\u4f8b\u6765\u4ecb\u7ecdThinkPHP5\u4e2d\u67e5\u8be2\u4e4b\u548c\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n
\u5047\u8bbe\u6211\u4eec\u7684\u6570\u636e\u5e93\u4e2d\u6709\u4e00\u5f20\u540d\u4e3astudents\u7684\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u6bcf\u4e2a\u5b66\u751f\u7684\u6210\u7ee9\u4fe1\u606f\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
id  name  grade1  grade2  grade3<br>1   \u5f20\u4e09   80      90      85<br>2   \u674e\u56db   75      82      93<br>3   \u738b\u4e94   90      85      87<br>...<br><\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6211\u4eec\u9700\u8981\u67e5\u8be2\u6240\u6709\u5b66\u751f\u7684\u603b\u6210\u7ee9\u5e76\u6309\u7167\u603b\u6210\u7ee9\u7684\u964d\u5e8f\u6392\u5e8f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u5b9e\u73b0\uff1a<\/p>\n
\/\/\u5bfc\u5165\u547d\u540d\u7a7a\u95f4<br>use thinkDb;<br><br>\/\/\u6784\u5efaSQL\u8bed\u53e5<br>$sql = \"SELECT id, name, (grade1 + grade2 + grade3) AS total_grade FROM students ORDER BY total_grade DESC\";<br><br>\/\/\u6267\u884cSQL\u8bed\u53e5\u5e76\u53d6\u51fa\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u548c<br>$results = Db::query($sql);<br><br>\/\/\u8f93\u51fa\u67e5\u8be2\u7ed3\u679c<br>echo \"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
 <\/p>\n\n  “;echo ” <\/p>\n\n\n\n
ID<\/th>\n\u59d3\u540d<\/th>\n\u603b\u6210\u7ee9<\/th>\n<\/tr>\n
“;foreach($results as $result){    echo ” <\/p>\n
“.$result[‘id’].”<\/td>\n“.$result[‘name’].”<\/td>\n“.$result[‘total_grade’].”<\/td>\n<\/tr>\n
“;}echo ”
\n <\/tbody>\n<\/table>\n
“;
\n <\/p>\n
\u6211\u4eec\u9996\u5148\u5f15\u5165\u4e86thinkDb\u547d\u540d\u7a7a\u95f4\uff0c\u5e76\u4e14\u91c7\u7528SELECT\u8bed\u53e5\u6784\u5efa\u4e86SQL\u8bed\u53e5\u3002\u5176\u4e2d\uff0c(grade1 + grade2 + grade3)\u7528\u4e8e\u8ba1\u7b97\u6bcf\u4e2a\u5b66\u751f\u7684\u603b\u6210\u7ee9\uff0c\u5e76\u5c06\u8ba1\u7b97\u7ed3\u679c\u7684\u540d\u79f0\u8bbe\u4e3atotal_grade\u3002\u7136\u540e\uff0c\u6211\u4eec\u6267\u884cquery\u65b9\u6cd5\u6765\u6267\u884cSQL\u8bed\u53e5\u5e76\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u3002\u6700\u540e\uff0c\u6211\u4eec\u5728\u9875\u9762\u4e0a\u8f93\u51fa\u67e5\u8be2\u7ed3\u679c\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fThinkPHP5\u4e2d\u67e5\u8be2\u65b9\u6cd5\u600e\u4e48\u4f7f\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u3001\u67e5\u8be2\u4e4b\u548c\u7684\u4f7f\u7528\u65b9\u6cd5 ThinkPHP5\u4e2d\u53ef\u4ee5\u901a\u8fc7query\u548csum\u65b9\u6cd5\u5b9e\u73b0\u67e5\u8be2\u4e4b\u548c\u3002query\u65b9\u6cd5\u88ab\u7528\u4e8e\u5efa\u7acbSQL\u8bed\u53e5\uff0c\u800csum\u65b9\u6cd5\u5219\u7528\u4e8e\u6267\u884cSQL\u8bed\u53e5\u5e76\u4ece\u67e5\u8be2\u7ed3\u679c\u4e2d\u83b7\u53d6\u603b\u548c\u3002 \u5177\u4f53\u800c\u8a00\uff0c\u67e5\u8be2\u4e4b\u548c\u7684\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a \/\/\u5bfc\u5165\u547d\u540d\u7a7a\u95f4<br>use thinkDb;<br><br>\/\/\u6784\u5efaSQL\u8bed\u53e5<br>$result = Db::query(‘SELECT SUM(column_name) AS total FROM table_name’);<br><br>\/\/\u53d6\u51fa\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u548c<br>$sum = $result[0][‘total’];<br> \u767b\u5f55\u540e\u590d\u5236 \u6211\u4eec\u5728\u4ee5\u4e0a\u4ee3\u7801\u4e2d\u5148\u5f15\u7528\u4e86thinkDb\u547d\u540d\u7a7a\u95f4\uff0c\u63a5\u7740\u4f7f\u7528query\u65b9\u6cd5\u7f16\u5199\u4e86SQL\u8bed\u53e5\u3002\u5176\u4e2d\uff0cSUM(column_name)\u7528\u4e8e\u8ba1\u7b97\u5217column_name\u4e2d\u6240\u6709\u503c\u7684\u548c\uff0cAS total\u7528\u4e8e\u5c06\u8ba1\u7b97\u7ed3\u679c\u7684\u540d\u79f0\u8bbe\u4e3atotal\u3002\u7136\u540e\uff0c\u6211\u4eec\u6267\u884cquery\u65b9\u6cd5\uff0c\u6765\u67e5\u8be2SQL\u8bed\u53e5\u5e76\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u548c\uff0c\u5373$result0\u3002 \u4e8c\u3001\u67e5\u8be2\u4e4b\u548c\u7684\u5b9e\u4f8b \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u5b9e\u4f8b\u6765\u4ecb\u7ecdThinkPHP5\u4e2d\u67e5\u8be2\u4e4b\u548c\u7684\u4f7f\u7528\u65b9\u6cd5\u3002 \u5047\u8bbe\u6211\u4eec\u7684\u6570\u636e\u5e93\u4e2d\u6709\u4e00\u5f20\u540d\u4e3astudents\u7684\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u6bcf\u4e2a\u5b66\u751f\u7684\u6210\u7ee9\u4fe1\u606f\uff0c\u5982\u4e0b\u6240\u793a\uff1a id  name  grade1  grade2  grade3<br>1   \u5f20\u4e09   80      90      85<br>2   \u674e\u56db   75      82      93<br>3   \u738b\u4e94   90      85      87<br>…<br> \u767b\u5f55\u540e\u590d\u5236 \u6211\u4eec\u9700\u8981\u67e5\u8be2\u6240\u6709\u5b66\u751f\u7684\u603b\u6210\u7ee9\u5e76\u6309\u7167\u603b\u6210\u7ee9\u7684\u964d\u5e8f\u6392\u5e8f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6765\u5b9e\u73b0\uff1a \/\/\u5bfc\u5165\u547d\u540d\u7a7a\u95f4<br>use thinkDb;<br><br>\/\/\u6784\u5efaSQL\u8bed\u53e5<br>$sql = “SELECT id, name, (grade1 + grade2 + grade3) AS total_grade FROM students ORDER BY total_grade DESC”;<br><br>\/\/\u6267\u884cSQL\u8bed\u53e5\u5e76\u53d6\u51fa\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u548c<br>$results = Db::query($sql);<br><br>\/\/\u8f93\u51fa\u67e5\u8be2\u7ed3\u679c<br>echo ” \u767b\u5f55\u540e\u590d\u5236 “;echo ” ID \u59d3\u540d \u603b\u6210\u7ee9 “;foreach($results as $result){    echo ” “.$result[‘id’].” “.$result[‘name’].” “.$result[‘total_grade’].” “;}echo ” “; \u6211\u4eec\u9996\u5148\u5f15\u5165\u4e86thinkDb\u547d\u540d\u7a7a\u95f4\uff0c\u5e76\u4e14\u91c7\u7528SELECT\u8bed\u53e5\u6784\u5efa\u4e86SQL\u8bed\u53e5\u3002\u5176\u4e2d\uff0c(grade1 + grade2 + grade3)\u7528\u4e8e\u8ba1\u7b97\u6bcf\u4e2a\u5b66\u751f\u7684\u603b\u6210\u7ee9\uff0c\u5e76\u5c06\u8ba1\u7b97\u7ed3\u679c\u7684\u540d\u79f0\u8bbe\u4e3atotal_grade\u3002\u7136\u540e\uff0c\u6211\u4eec\u6267\u884cquery\u65b9\u6cd5\u6765\u6267\u884cSQL\u8bed\u53e5\u5e76\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u3002\u6700\u540e\uff0c\u6211\u4eec\u5728\u9875\u9762\u4e0a\u8f93\u51fa\u67e5\u8be2\u7ed3\u679c\u3002 \u4ee5\u4e0a\u5c31\u662fThinkPHP5\u4e2d\u67e5\u8be2\u65b9\u6cd5\u600e\u4e48\u4f7f\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-22933","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=22933"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/22933\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=22933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=22933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=22933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}