{"id":6290,"date":"2024-11-14T11:07:34","date_gmt":"2024-11-14T03:07:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6290\/"},"modified":"2024-11-14T11:07:34","modified_gmt":"2024-11-14T03:07:34","slug":"hackerrank-sql-preparation-japanese-cities-namesmysql","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6290\/","title":{"rendered":"HackerRank SQL Preparation: Japanese Cities&#038;# Names(MySQL)"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/164\/172058159287549.jpg\" class=\"aligncenter\" title=\"HackerRank SQL Preparation: Japanese Cities&#038;# Names(MySQL)\u63d2\u56fe\" alt=\"HackerRank SQL Preparation: Japanese Cities&#038;# Names(MySQL)\u63d2\u56fe\" \/><\/p>\n<p><strong>\u95ee\u9898\u9648\u8ff0\uff1a<\/strong><br \/> \u67e5\u8be2 <strong>CITY<\/strong> \u8868\u4e2d\u6240\u6709\u65e5\u672c\u57ce\u5e02\u7684\u540d\u79f0\u3002\u65e5\u672c\u7684\u56fd\u5bb6\/\u5730\u533a\u4ee3\u7801\u662f JPN\u3002<\/p>\n<p><strong>\u94fe\u63a5\uff1a<\/strong> HackerRank &#8211; \u65e5\u672c\u57ce\u5e02\u540d\u79f0<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<pre>\u4ece\u56fd\u5bb6\/\u5730\u533a\u4ee3\u7801 = 'JPN' \u7684\u57ce\u5e02\u4e2d\u9009\u62e9\u540d\u79f0\uff1b\n<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u8bf4\u660e\uff1a<\/strong><\/p>\n<ul>\n<li> SELECT NAME\uff1a\u8fd9\u90e8\u5206\u67e5\u8be2\u6307\u5b9a\u60a8\u8981\u4ece <strong>CITY<\/strong> \u8868\u4e2d\u68c0\u7d22 NAME \u5217\u3002<\/li>\n<li> FROM CITY\uff1a\u8868\u793a\u60a8\u6b63\u5728\u4ece <strong>CITY<\/strong> \u8868\u4e2d\u9009\u62e9\u6570\u636e\u3002<\/li>\n<li> WHERE COUNTRYCODE = &#8216;JPN&#8217;\uff1a\u6b64\u6761\u4ef6\u8fc7\u6ee4\u884c\u4ee5\u4ec5\u5305\u542b COUNTRYCODE \u4e3a &#8216;JPN&#8217;\uff08\u65e5\u672c\uff09\u7684\u57ce\u5e02\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fHackerRank SQL Preparation: Japanese Cities&amp;# Names(MySQL)\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u95ee\u9898\u9648\u8ff0\uff1a \u67e5\u8be2 CITY \u8868\u4e2d\u6240\u6709\u65e5\u672c\u57ce\u5e02\u7684\u540d\u79f0\u3002\u65e5\u672c\u7684\u56fd\u5bb6\/\u5730\u533a\u4ee3\u7801\u662f JPN\u3002 \u94fe\u63a5\uff1a HackerRank &#8211; \u65e5\u672c\u57ce\u5e02\u540d\u79f0 \u89e3\u51b3\u65b9\u6848\uff1a \u4ece\u56fd\u5bb6\/\u5730\u533a\u4ee3\u7801 = &#8216;JPN&#8217; \u7684\u57ce\u5e02\u4e2d\u9009\u62e9\u540d\u79f0\uff1b \u767b\u5f55\u540e\u590d\u5236 \u8bf4\u660e\uff1a SELECT NAME\uff1a\u8fd9\u90e8\u5206\u67e5\u8be2\u6307\u5b9a\u60a8\u8981\u4ece CITY \u8868\u4e2d\u68c0\u7d22 NAME \u5217\u3002 FROM CITY\uff1a\u8868\u793a\u60a8\u6b63\u5728\u4ece CITY \u8868\u4e2d\u9009\u62e9\u6570\u636e\u3002 WHERE COUNTRYCODE = &#8216;JPN&#8217;\uff1a\u6b64\u6761\u4ef6\u8fc7\u6ee4\u884c\u4ee5\u4ec5\u5305\u542b COUNTRYCODE \u4e3a &#8216;JPN&#8217;\uff08\u65e5\u672c\uff09\u7684\u57ce\u5e02\u3002 \u4ee5\u4e0a\u5c31\u662fHackerRank SQL Preparation: Japanese Cities&amp;# Names(MySQL)\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\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-6290","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6290","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=6290"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6290\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}