{"type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2019%2F08%2F24%2F103902\" title=\"\u5b9f\u884c\u4e2d\u306e\u5b9f\u884c\u8a08\u753b\u78ba\u8a8d - HTN20190109\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","categories":["DB"],"version":"1.0","height":"190","url":"https://htn20190109.hatenablog.com/entry/2019/08/24/103902","author_url":"https://blog.hatena.ne.jp/HTN20190109/","image_url":null,"blog_url":"https://htn20190109.hatenablog.com/","published":"2019-08-24 10:39:02","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","author_name":"HTN20190109","description":"Oracle (19c) --\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u4f5c\u6210[session 1] drop table tab1 purge;create table tab1(col1 int); declarebegin for i in 1..10000 loop insert into tab1 values(i); commit; end loop;end;/ select count(*) from tab1; --\u78ba\u8a8d\u7528SQL\u5b9f\u884c[session 1]select /* test */ count(*) from tab1 t1,tab1 t2,tab1 t3,tab1 t4,tab1 t5; --\u30e9\u30a4\u30d6\u5b9f\u2026","blog_title":"HTN20190109\u306e\u65e5\u8a18","title":"\u5b9f\u884c\u4e2d\u306e\u5b9f\u884c\u8a08\u753b\u78ba\u8a8d"}