{"id":9217,"date":"2026-07-17T10:26:57","date_gmt":"2026-07-17T01:26:57","guid":{"rendered":"https:\/\/since2020.jp\/media\/?p=9217"},"modified":"2026-07-17T10:26:58","modified_gmt":"2026-07-17T01:26:58","slug":"bigquery-unpivot-vs-union-all-vs-unnest","status":"publish","type":"post","link":"https:\/\/since2020.jp\/media\/bigquery-unpivot-vs-union-all-vs-unnest\/","title":{"rendered":"BigQuery\u3067\u6a2a\u6301\u3061\u30c7\u30fc\u30bf\u3092\u7e26\u6301\u3061\u306b\u5909\u63db\u3059\u308b3\u3064\u306e\u65b9\u6cd5\u3092\u6bd4\u8f03\u3057\u3066\u307f\u305f"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p>BigQuery\u3067\u5206\u6790\u3092\u3057\u3066\u3044\u308b\u3068\u3001\u300c\u6a2a\u6301\u3061(wide format)\u300d\u3067\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u3092\u300c\u7e26\u6301\u3061(long format)\u300d\u306b\u5909\u63db\u3057\u305f\u3044\u5834\u9762\u306b\u3088\u304f\u51fa\u4f1a\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6708\u5225\u58f2\u4e0a\u304c\u5217\u3068\u3057\u3066\u6a2a\u306b\u4e26\u3093\u3067\u3044\u308b\u30c7\u30fc\u30bf\u3092\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u7528\u306b\u5909\u63db\u3057\u305f\u308a\u3001\u30ea\u30d4\u30fc\u30c8\u8cfc\u8cb7\u5206\u6790\u3067\u8907\u6570\u306e\u671f\u9593\u8ef8(3\u30f6\u6708\u4ee5\u5185\u30fb\u5168\u671f\u9593\u306a\u3069)\u30921\u3064\u306e\u30ab\u30e9\u30e0\u306b\u307e\u3068\u3081\u305f\u308a\u3059\u308b\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070EC\u30b5\u30a4\u30c8\u306e\u30ea\u30d4\u30fc\u30c8\u8cfc\u8cb7\u5206\u6790\u3067\u3001\u8907\u6570\u306e\u671f\u9593\u8ef8(3\u30f6\u6708\u4ee5\u5185\u30fb\u5168\u671f\u9593\u306a\u3069)\u30921\u3064\u306e\u30ab\u30e9\u30e0\u306b\u307e\u3068\u3081\u305f\u3044\u3068\u3044\u3063\u305f\u30b1\u30fc\u30b9\u3092\u60f3\u5b9a\u3057\u3001\u4ee3\u8868\u7684\u306a3\u3064\u306e\u65b9\u6cd5\u3092\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>UNPIVOT<\/code><\/li>\n\n\n\n<li><code>UNION ALL<\/code><\/li>\n\n\n\n<li><code>CROSS JOIN UNNEST<\/code> + <code>STRUCT<\/code><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u74b0\u5883\u8a2d\u5b9a<\/h2>\n\n\n\n<p>\u691c\u8a3c\u306b\u4f7f\u3063\u305f\u30b5\u30f3\u30d7\u30eb\u30c7\u30fc\u30bf\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6a2a\u6301\u3061\u306e\u30c6\u30fc\u30d6\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>id<\/th><th>jan_sales<\/th><th>feb_sales<\/th><th>mar_sales<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>100<\/td><td>200<\/td><td>150<\/td><\/tr><tr><td>2<\/td><td>300<\/td><td>0<\/td><td>80<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3053\u308c\u3092\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7e26\u6301\u3061\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u4eca\u56de\u306e\u30b4\u30fc\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>id<\/th><th>month<\/th><th>sales_amount<\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>jan_sales<\/td><td>100<\/td><\/tr><tr><td>1<\/td><td>feb_sales<\/td><td>200<\/td><\/tr><tr><td>1<\/td><td>mar_sales<\/td><td>150<\/td><\/tr><tr><td>2<\/td><td>jan_sales<\/td><td>300<\/td><\/tr><tr><td>2<\/td><td>feb_sales<\/td><td>0<\/td><\/tr><tr><td>2<\/td><td>mar_sales<\/td><td>80<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u88c5\u624b\u9806<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u2460 UNPIVOT<\/h3>\n\n\n\n<p>BigQuery\u304c\u6a19\u6e96SQL\u3068\u3057\u3066\u63d0\u4f9b\u3057\u3066\u3044\u308b\u5c02\u7528\u69cb\u6587\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT *\nFROM sales_wide\nUNPIVOT(\n  sales_amount FOR month IN (jan_sales, feb_sales, mar_sales)\n)\n<\/code><\/pre>\n\n\n\n<p>\u5217\u540d\u3092<code>IN<\/code>\u306e\u4e2d\u306b\u4e26\u3079\u308b\u3060\u3051\u3067\u3001\u5bfe\u8c61\u5217\u304c\u81ea\u52d5\u7684\u306b<code>month<\/code>(\u5217\u540d)\u3068<code>sales_amount<\/code>(\u5024)\u306e2\u5217\u306b\u5c55\u958b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u2461 UNION ALL<\/h3>\n\n\n\n<p>\u4e00\u756a\u53e4\u5178\u7684\u3067\u3001SQL\u3092\u66f8\u3044\u305f\u3053\u3068\u304c\u3042\u308b\u4eba\u306a\u3089\u8ab0\u3067\u3082\u8aad\u3081\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT id, 'jan_sales' AS month, jan_sales AS sales_amount FROM sales_wide\nUNION ALL\nSELECT id, 'feb_sales', feb_sales FROM sales_wide\nUNION ALL\nSELECT id, 'mar_sales', mar_sales FROM sales_wide\n<\/code><\/pre>\n\n\n\n<p>\u5bfe\u8c61\u306e\u5217\u3054\u3068\u306b<code>SELECT<\/code>\u30921\u672c\u66f8\u304d\u3001<code>UNION ALL<\/code>\u3067\u7e26\u306b\u7a4d\u307f\u4e0a\u3052\u3066\u3044\u304f\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u2462 CROSS JOIN UNNEST + STRUCT<\/h3>\n\n\n\n<p>\u914d\u5217\u3068STRUCT\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u64ec\u4f3c\u7684\u306b\u6a2a\u2192\u7e26\u5909\u63db\u3092\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT id, month, sales_amount\nFROM sales_wide,\nUNNEST(&#091;\n  STRUCT('jan_sales' AS month, jan_sales AS sales_amount),\n  STRUCT('feb_sales', feb_sales),\n  STRUCT('mar_sales', mar_sales)\n])\n<\/code><\/pre>\n\n\n\n<p><code>STRUCT<\/code>\u306e\u914d\u5217\u3092<code>UNNEST<\/code>\u3067\u5c55\u958b\u3057\u3064\u3064\u3001\u5143\u30c6\u30fc\u30d6\u30eb\u3068\u6697\u9ed9\u7684\u306b<code>CROSS JOIN<\/code>\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u6708\u3054\u3068\u306e\u5024\u3092\u884c\u306b\u6301\u305f\u305b\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d50\u679c<\/h2>\n\n\n\n<p>3\u3064\u306e\u65b9\u6cd5\u3068\u3082\u3001\u72d9\u3044\u901a\u308a\u524d\u8ff0\u306e\u7e26\u6301\u3061\u30c6\u30fc\u30d6\u30eb\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002\u5b9f\u884c\u3057\u305f\u4e0a\u3067\u78ba\u8a8d\u3067\u304d\u305f\u3001\u305d\u308c\u305e\u308c\u306e\u826f\u3044\u3068\u3053\u308d\u30fb\u60aa\u3044\u3068\u3053\u308d\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u2460 UNPIVOT<\/h3>\n\n\n\n<p><strong>\u826f\u3044\u3068\u3053\u308d<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3068\u306b\u304b\u304f\u77ed\u3044\u3002\u5217\u540d\u3092\u4e26\u3079\u308b\u3060\u3051\u3067\u5909\u63db\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u610f\u56f3\u304c\u660e\u78ba\u3002\u300c\u3053\u308c\u306fUNPIVOT\u3057\u3066\u3044\u308b\u300d\u3068\u30b3\u30fc\u30c9\u3092\u8aad\u3093\u3060\u77ac\u9593\u306b\u5206\u304b\u308b<\/li>\n\n\n\n<li>BigQuery\u5074\u3067\u30af\u30a8\u30ea\u306e\u6700\u9069\u5316\u304c\u52b9\u304d\u3084\u3059\u3044(\u5c02\u7528\u69cb\u6587\u306e\u305f\u3081)<\/li>\n<\/ul>\n\n\n\n<p><strong>\u60aa\u3044\u3068\u3053\u308d<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5217\u3054\u3068\u306b\u500b\u5225\u306e\u52a0\u5de5(\u578b\u5909\u63db\u3001\u6761\u4ef6\u5206\u5c90\u3001null\u57cb\u3081\u306a\u3069)\u3092\u631f\u307f\u305f\u3044\u5834\u5408\u306b\u306f\u4e0d\u5411\u304d<\/li>\n\n\n\n<li>\u5bfe\u8c61\u5217\u304c\u3059\u3079\u3066\u540c\u3058\u30c7\u30fc\u30bf\u578b\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b<\/li>\n\n\n\n<li>NULL\u306e\u6271\u3044\u306b\u7656\u304c\u3042\u308b\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u5024\u304cNULL\u306e\u884c\u3082\u51fa\u529b\u3055\u308c\u308b(\u9664\u5916\u3057\u305f\u3044\u5834\u5408\u306f\u5225\u9014WHERE\u304c\u5fc5\u8981)<\/li>\n\n\n\n<li>\u5217\u540d\u306e\u6570\u304c\u591a\u3044\u3001\u3042\u308b\u3044\u306f\u52d5\u7684\u306b\u5909\u308f\u308b\u5834\u5408\u306f\u4e8b\u524d\u306b\u5217\u540d\u3092\u3059\u3079\u3066\u66f8\u304d\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308a\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u304c\u4e0b\u304c\u308b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u2461 UNION ALL<\/h3>\n\n\n\n<p><strong>\u826f\u3044\u3068\u3053\u308d<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5217\u3054\u3068\u306b\u500b\u5225\u306e\u30ed\u30b8\u30c3\u30af\u3092\u5dee\u3057\u8fbc\u3081\u308b(\u4f8b:2\u6708\u3060\u3051\u96c6\u8a08\u65b9\u6cd5\u304c\u9055\u3046\u3001\u7279\u5b9a\u306e\u5217\u3060\u3051\u4e38\u3081\u51e6\u7406\u3092\u3059\u308b\u3001\u306a\u3069)<\/li>\n\n\n\n<li>\u3069\u3093\u306aSQL\u30a8\u30f3\u30b8\u30f3\u3067\u3082\u52d5\u304f\u6c4e\u7528\u6027\u306e\u9ad8\u3055\u3002BigQuery\u7279\u6709\u306e\u69cb\u6587\u306b\u4f9d\u5b58\u3057\u306a\u3044<\/li>\n\n\n\n<li>\u4e00\u884c\u305a\u3064\u8aad\u3081\u3070\u51e6\u7406\u5185\u5bb9\u304c\u8ffd\u3048\u308b(\u53ef\u8aad\u6027\u306fUNPIVOT\u306b\u52a3\u308b\u304c\u3001\u8907\u96d1\u306a\u5206\u5c90\u3092\u66f8\u304f\u5834\u5408\u306f\u3053\u3061\u3089\u306e\u65b9\u304c\u7d50\u5c40\u8aad\u307f\u3084\u3059\u3044\u3053\u3068\u3082\u591a\u3044)<\/li>\n<\/ul>\n\n\n\n<p><strong>\u60aa\u3044\u3068\u3053\u308d<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5217\u6570\u304c\u5897\u3048\u308b\u3068\u30af\u30a8\u30ea\u304c\u7e26\u306b\u4f38\u3073\u3066\u5197\u9577\u306b\u306a\u308b\u300210\u5217\u3042\u308c\u307010\u500b\u306eSELECT\u304c\u4e26\u3076<\/li>\n\n\n\n<li>\u5143\u30c6\u30fc\u30d6\u30eb\u3092\u5217\u6570\u5206\u30b9\u30ad\u30e3\u30f3\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u305f\u3081\u3001\u5927\u304d\u3044\u30c6\u30fc\u30d6\u30eb\u3067\u306f\u30b3\u30b9\u30c8\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u9762\u3067\u4e0d\u5229\u306b\u306a\u308a\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u5217\u540d\u306e\u8ffd\u52a0\u30fb\u5909\u66f4\u306e\u305f\u3073\u306b\u30af\u30a8\u30ea\u5168\u4f53\u3092\u66f8\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5\u2462 CROSS JOIN UNNEST + STRUCT<\/h3>\n\n\n\n<p><strong>\u826f\u3044\u3068\u3053\u308d<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6708\u3054\u3068\u306b\u8907\u6570\u306e\u4ed8\u968f\u60c5\u5831(\u4f8b:\u76ee\u6a19\u5024\u3001\u524d\u5e74\u540c\u6708\u6bd4\u306a\u3069)\u3092\u307e\u3068\u3081\u3066\u6301\u305f\u305b\u3089\u308c\u308b\u3002STRUCT\u306e\u4e2d\u306b\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5897\u3084\u3059\u3060\u3051\u3067\u3088\u3044<\/li>\n\n\n\n<li>\u914d\u5217\u64cd\u4f5c(WITH OFFSET\u306a\u3069)\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u9806\u5e8f\u60c5\u5831\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd<\/li>\n\n\n\n<li>UNPIVOT\u3088\u308a\u81ea\u7531\u5ea6\u304c\u9ad8\u304f\u3001UNION ALL\u3088\u308a\u884c\u6570\u3092\u5727\u7e2e\u3067\u304d\u308b<\/li>\n<\/ul>\n\n\n\n<p><strong>\u60aa\u3044\u3068\u3053\u308d<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u69cb\u6587\u304c\u3084\u3084\u72ec\u7279\u3067\u3001UNPIVOT\u3084UNION ALL\u306b\u6bd4\u3079\u3066\u521d\u898b\u306e\u4eba\u306b\u306f\u8aad\u307f\u306b\u304f\u3044<\/li>\n\n\n\n<li>STRUCT\u306e\u8a18\u6cd5(1\u3064\u76ee\u3060\u3051\u30d5\u30a3\u30fc\u30eb\u30c9\u540d\u3092\u66f8\u3051\u3070\u4ee5\u964d\u306f\u578b\u63a8\u8ad6\u3055\u308c\u308b\u3001\u306a\u3069)\u306b\u6163\u308c\u3066\u3044\u306a\u3044\u3068\u30df\u30b9\u3057\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u5358\u7d14\u306a\u6a2a\u2192\u7e26\u5909\u63db\u3060\u3051\u304c\u76ee\u7684\u306a\u3089\u3001\u30aa\u30fc\u30d0\u30fc\u30b9\u30da\u30c3\u30af\u306b\u306a\u308a\u304c\u3061<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3\u3064\u306e\u6bd4\u8f03\u307e\u3068\u3081<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u89b3\u70b9<\/th><th>UNPIVOT<\/th><th>UNION ALL<\/th><th>UNNEST + STRUCT<\/th><\/tr><\/thead><tbody><tr><td>\u8a18\u8ff0\u91cf<\/td><td>\u5c11\u306a\u3044<\/td><td>\u591a\u3044(\u5217\u6570\u5206)<\/td><td>\u4e2d\u7a0b\u5ea6<\/td><\/tr><tr><td>\u53ef\u8aad\u6027<\/td><td>\u9ad8\u3044(\u610f\u56f3\u304c\u660e\u78ba)<\/td><td>\u4e2d\u7a0b\u5ea6(\u5358\u7d14\u306a\u5206\u3060\u3051\u8ffd\u3044\u3084\u3059\u3044)<\/td><td>\u3084\u3084\u4f4e\u3044(\u69cb\u6587\u306b\u6163\u308c\u304c\u5fc5\u8981)<\/td><\/tr><tr><td>\u5217\u3054\u3068\u306e\u500b\u5225\u52a0\u5de5<\/td><td>\u3057\u306b\u304f\u3044<\/td><td>\u3057\u3084\u3059\u3044<\/td><td>\u3057\u3084\u3059\u3044<\/td><\/tr><tr><td>\u8907\u6570\u306e\u4ed8\u968f\u60c5\u5831\u3092\u6301\u305f\u305b\u308b<\/td><td>\u4e0d\u53ef<\/td><td>\u4e0d\u53ef(\u5217\u3092\u5897\u3084\u3059\u5fc5\u8981\u3042\u308a)<\/td><td>\u5f97\u610f<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td><td>\u826f\u3044<\/td><td>\u5217\u6570\u5206\u30b9\u30ad\u30e3\u30f3\u3057\u304c\u3061\u3067\u4e0d\u5229<\/td><td>\u4e2d\u7a0b\u5ea6<\/td><\/tr><tr><td>\u6c4e\u7528\u6027(\u4ed6\u30a8\u30f3\u30b8\u30f3\u3067\u3082\u4f7f\u3048\u308b\u304b)<\/td><td>BigQuery\u56fa\u6709\u69cb\u6587<\/td><td>\u9ad8\u3044(\u6a19\u6e96SQL)<\/td><td>BigQuery\u56fa\u6709\u306e\u66f8\u304d\u65b9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u30ea\u30d4\u30fc\u30c8\u8cfc\u8cb7\u5206\u6790(3\u30f6\u6708\/\u5168\u671f\u9593)\u306e\u3088\u3046\u306b\u3001\u300c\u8ef8\u3068\u306a\u308b\u5217\u304c\u5c11\u6570\u3067\u3001\u52a0\u5de5\u30ed\u30b8\u30c3\u30af\u304c\u30b7\u30f3\u30d7\u30eb\u300d\u306a\u5834\u5408\u306fUNPIVOT\u304c\u6700\u9069\u305d\u3046\u3067\u3059\u3002\u30b3\u30fc\u30c9\u306e\u898b\u901a\u3057\u304c\u826f\u304f\u3001\u5f8c\u304b\u3089\u898b\u305f\u4eba\u306b\u3082\u4e00\u76ee\u3067\u610f\u56f3\u304c\u4f1d\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u9006\u306b\u3001\u6708\u5225\u58f2\u4e0a\u306e\u3088\u3046\u306b\u5217\u304c\u591a\u304f\u3001\u304b\u3064\u5217\u3054\u3068\u306b\u524d\u5e74\u540c\u6708\u6bd4\u3084\u76ee\u6a19\u9054\u6210\u7387\u3068\u3044\u3063\u305f\u8907\u6570\u306e\u4ed8\u968f\u60c5\u5831\u3092\u6301\u305f\u305b\u305f\u3044\u5834\u5408\u306f\u3001UNNEST+STRUCT\u306e\u65b9\u304c\u69cb\u9020\u3068\u3057\u3066\u7121\u7406\u304c\u3042\u308a\u307e\u305b\u3093\u3002UNION ALL\u306f\u6b63\u76f4\u306a\u3068\u3053\u308d\u3001\u4ed6\u306e2\u3064\u306e\u65b9\u6cd5\u3067\u30ab\u30d0\u30fc\u3057\u304d\u308c\u306a\u3044\u7279\u6b8a\u306a\u5206\u5c90\u51e6\u7406(\u4f8b:\u7279\u5b9a\u306e\u6708\u3060\u3051\u7a0e\u629c\u304d\u8a08\u7b97\u304c\u5fc5\u8981\u3001\u306a\u3069)\u304c\u3042\u308b\u5834\u5408\u306e\u6700\u7d42\u624b\u6bb5\u3068\u3057\u3066\u4f7f\u3046\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u300c\u6a2a\u2192\u7e26\u5909\u63db\u300d\u306f\u5730\u5473\u306a\u51e6\u7406\u306b\u898b\u3048\u3066\u3001\u9078\u3076\u624b\u6cd5\u6b21\u7b2c\u3067\u30af\u30a8\u30ea\u306e\u53ef\u8aad\u6027\u30fb\u4fdd\u5b88\u6027\u30fb\u30b3\u30b9\u30c8\u304c\u7d50\u69cb\u5909\u308f\u3063\u3066\u304d\u307e\u3059\u3002\u307e\u305a\u306fUNPIVOT\u3067\u66f8\u3051\u306a\u3044\u304b\u691c\u8a0e\u3057\u3001\u305d\u308c\u3067\u8868\u73fe\u3057\u304d\u308c\u306a\u3044\u8981\u4ef6\u304c\u51fa\u3066\u304d\u305f\u3068\u304d\u306bUNION ALL\u304bUNNEST+STRUCT\u3092\u691c\u8a0e\u3059\u308b\u3001\u3068\u3044\u3046\u9806\u756a\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u53c2\u8003\u30ea\u30f3\u30af<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/reference\/standard-sql\/query-syntax#unpivot_operator\">BigQuery\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8: UNPIVOT\u6f14\u7b97\u5b50<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/reference\/standard-sql\/query-syntax#unnest_operator\">BigQuery\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8: UNNEST\u6f14\u7b97\u5b50<\/a><\/li>\n<\/ul>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b BigQuery\u3067\u5206\u6790\u3092\u3057\u3066\u3044\u308b\u3068\u3001\u300c\u6a2a\u6301\u3061(wide format)\u300d\u3067\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u3092\u300c\u7e26\u6301\u3061(long format)\u300d\u306b\u5909\u63db\u3057\u305f\u3044\u5834\u9762\u306b\u3088\u304f\u51fa\u4f1a\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6708\u5225\u58f2\u4e0a\u304c\u5217\u3068\u3057\u3066\u6a2a\u306b\u4e26\u3093\u3067\u3044\u308b\u30c7\u30fc [&hellip;]<\/p>\n","protected":false},"author":98,"featured_media":8422,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","swell_btn_cv_data":"","footnotes":"","_wp_rev_ctl_limit":""},"categories":[1251,1249,1248],"tags":[108,148,39],"class_list":["post-9217","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-analysis","category-knowledge","category-use-case","tag-bigquery","tag-sql","tag-39"],"_links":{"self":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/9217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/users\/98"}],"replies":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/comments?post=9217"}],"version-history":[{"count":1,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/9217\/revisions"}],"predecessor-version":[{"id":9218,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/9217\/revisions\/9218"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/media\/8422"}],"wp:attachment":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/media?parent=9217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/categories?post=9217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/tags?post=9217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}