{"author_url":"https://blog.hatena.ne.jp/tgk/","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","blog_title":"\u6975\u5317\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0","height":"190","author_name":"tgk","blog_url":"https://tgk.hatenadiary.org/","version":"1.0","url":"https://tgk.hatenadiary.org/entry/20100924/1285331509","description":"Teradata\u306e\u5b9f\u884c\u8a08\u753b\u306b\u3064\u3044\u3066\u5c11\u3057\u305a\u3064\u6574\u7406\u3057\u3066\u3044\u304d\u307e\u3059\u3002 \u4eca\u56de\u306f\u5927\u91cf\u30c7\u30fc\u30bf\u306e\u7d50\u5408\u306e\u5b9f\u884c\u8a08\u753b\u306b\u3064\u3044\u3066\u3002 \u3053\u3093\u306a\u30af\u30a8\u30ea\u306f\u3001\u3069\u3046\u3044\u3046\u5b9f\u884c\u8a08\u753b\u306b\u306a\u3063\u3066\u3044\u308c\u3070OK\u3060\u308d\u3046\u304b\u3002 select * from t /* 1000\u4e07\u4ef6\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 */ inner join m /* \u30de\u30b9\u30bf */ on m.c1=t.c1 RowHash match scan ... using a merge join m.c1\u3068t.c1\u304c\u305d\u308c\u305e\u306e\u30c6\u30fc\u30d6\u30eb\u306ePI(Primary Index)\u3067\u3042\u308c\u3070\u3001\u4ee5\u4e0b\u306e\u5b9f\u884c\u8a08\u753b\u304c\u51fa\u3066\u304f\u308b\u306f\u305a\u3060\u3002 4) We do an all-AMPs JOIN step from TST.m \u2026","title":"Teradata\u306e\u5b9f\u884c\u8a08\u753b(1) - \u5927\u91cf\u30c7\u30fc\u30bf\u306e\u7d50\u5408\u306e\u8a08\u753b","type":"rich","image_url":null,"width":"100%","published":"2010-09-24 21:31:49","categories":["Teradata"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftgk.hatenadiary.org%2Fentry%2F20100924%2F1285331509\" title=\"Teradata\u306e\u5b9f\u884c\u8a08\u753b(1) - \u5927\u91cf\u30c7\u30fc\u30bf\u306e\u7d50\u5408\u306e\u8a08\u753b - \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>"}