{"image_url":null,"published":"2010-08-31 23:03:07","blog_url":"https://tgk.hatenadiary.org/","width":"100%","author_url":"https://blog.hatena.ne.jp/tgk/","type":"rich","provider_name":"Hatena Blog","categories":["Teradata"],"author_name":"tgk","blog_title":"\u6975\u5317\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0","version":"1.0","url":"https://tgk.hatenadiary.org/entry/20100831/1283263387","description":"Teradata\u30673000\u4e07\u4ef6\u3050\u3089\u3044\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u305f\u3060\u5168\u4ef6\u5f15\u3044\u3066\u307f\u308b\u3068\u3001 select * from t /* 3000\u4e07\u4ef6 */\u3057\u3070\u3089\u304f\u3060\u3093\u307e\u308a\u306b\u306a\u3063\u305f\u5f8c\u3067\u3001\u731b\u7136\u3068\u7d50\u679c\u304c\u8fd4\u3063\u3066\u304f\u308b\u3002 \u3053\u306e\u3060\u3093\u307e\u308a\u306e\u6642\u9593\u306b\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304bexplain\u3067\u8abf\u3079\u3066\u307f\u308b\u3068\u3001 3) We do an all-AMPs RETRIEVE step from TST.t by way of an all-rows scan with no residual conditions into Spool 1 (group_amps), which is built locally on the AMPs. \u4f55\u3068\u5168\u4ef6\u30b9\u30d7\u30fc\u30eb\u306b\u66f8\u2026","title":"Teradata\u306f\u5358\u4e00\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5168\u4ef6\u8fd4\u3059\u3068\u304d\u3082\u30b9\u30d7\u30fc\u30eb\u3092\u4f7f\u3046","provider_url":"https://hatena.blog","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftgk.hatenadiary.org%2Fentry%2F20100831%2F1283263387\" title=\"Teradata\u306f\u5358\u4e00\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5168\u4ef6\u8fd4\u3059\u3068\u304d\u3082\u30b9\u30d7\u30fc\u30eb\u3092\u4f7f\u3046 - \u6975\u5317\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}