{"id":44844,"date":"2023-11-30T09:00:23","date_gmt":"2023-01-22T21:34:38","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/"},"modified":"2024-05-04T11:27:35","modified_gmt":"2024-05-04T03:27:35","slug":"44844-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/","title":{"rendered":""},"content":{"rendered":"<h2>\u554f\u984c<\/h2>\n<p>golang\u306e\u6a19\u6e96\u30d1\u30c3\u30b1\u30fc\u30b8 &#8220;database\/sql&#8221;\u3092\u4f7f\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bPlaceholder\u4ed8\u306e\u30af\u30a8\u30ea\u66f8\u3044\u305f\u3089\u3001Syntax error\u304c\u767a\u751f\u3057\u3066\u3057\u307e\u3046\u3001\u306a\u305c\u304b\u3002<\/p>\n<p>\u53c2\u8003<br \/>\n&#8211; https:\/\/golang.org\/pkg\/database\/sql\/#example_DB_Query_multipleResultSets<br \/>\n&#8211; https:\/\/play.golang.org\/p\/D-5ZVSzhcXx<\/p>\n<pre class=\"post-pre\"><code>func main() {\r\n    age := 27\r\n    q := `\r\ncreate temp table uid (id bigint); -- Create temp table for queries.\r\ninsert into uid\r\nselect id from users where age &lt; ?; -- Populate temp table.\r\n\r\n-- First result set.\r\nselect\r\n    users.id, name\r\nfrom\r\n    users\r\n    join uid on users.id = uid.id\r\n;\r\n\r\n-- Second result set.\r\nselect \r\n    ur.user, ur.role\r\nfrom\r\n    user_roles as ur\r\n    join uid on uid.id = ur.user\r\n;\r\n    `\r\n    rows, err := db.Query(q, age)\r\n    if err != nil {\r\n        log.Fatal(err) \/\/ Syntax error\r\n    }\r\n<\/code><\/pre>\n<h2>\u539f\u56e0<\/h2>\n<p>PostgresDB\u4f7f\u3063\u3066\u305f\u305f\u3081\u3001?\u3092$1\u306b\u4fee\u6b63\u3059\u308c\u3070\u30a8\u30e9\u30fc\u306f\u89e3\u6d88\u3067\u304d\u308b\u3002<\/p>\n<p>\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u4ed8\u304d\u306eSQL\u3092DB\u306b\u3042\u3089\u304b\u3058\u3081\u9001\u4fe1\u3057\u3066\u3044\u308b\u305f\u3081\u3001DB\u3054\u3068\u306b\u8a18\u6cd5\u304c\u7570\u306a\u308b\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5af337434c4406ce8837\/7-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2019-03-07 17.45.34.png\" \/><\/div>\n<p>\u5f15\u7528: http:\/\/go-database-sql.org\/prepared.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u554f\u984c golang\u306e\u6a19\u6e96\u30d1\u30c3\u30b1\u30fc\u30b8 &#8220;database\/sql&#8221;\u3092\u4f7f\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44844","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u554f\u984c golang\u306e\u6a19\u6e96\u30d1\u30c3\u30b1\u30fc\u30b8 &#8220;database\/sql&#8221;\u3092\u4f7f\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-01-22T21:34:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-04T03:27:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5af337434c4406ce8837\/7-0.png\" \/>\n<meta name=\"author\" content=\"\u6e05, \u5b87\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u5b87\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/\",\"name\":\"- Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-01-22T21:34:38+00:00\",\"dateModified\":\"2024-05-04T03:27:35+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e\",\"name\":\"\u6e05, \u5b87\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g\",\"caption\":\"\u6e05, \u5b87\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyu\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"- Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/","og_locale":"zh_CN","og_type":"article","og_description":"\u554f\u984c golang\u306e\u6a19\u6e96\u30d1\u30c3\u30b1\u30fc\u30b8 &#8220;database\/sql&#8221;\u3092\u4f7f\u3063\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b [&hellip;]","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-01-22T21:34:38+00:00","article_modified_time":"2024-05-04T03:27:35+00:00","og_image":[{"url":"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5af337434c4406ce8837\/7-0.png"}],"author":"\u6e05, \u5b87","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u6e05, \u5b87","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/","name":"- Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-01-22T21:34:38+00:00","dateModified":"2024-05-04T03:27:35+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/"]}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e","name":"\u6e05, \u5b87","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g","caption":"\u6e05, \u5b87"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyu\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/44844-2\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/44844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=44844"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/44844\/revisions"}],"predecessor-version":[{"id":98048,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/44844\/revisions\/98048"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=44844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=44844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=44844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}