{"id":194,"date":"2008-12-04T08:45:07","date_gmt":"2008-12-04T00:45:07","guid":{"rendered":""},"modified":"2014-02-27T22:59:41","modified_gmt":"2014-02-27T14:59:41","slug":"rs-open-sqlconn11%e5%85%a8%e6%8e%a5%e8%a7%a6","status":"publish","type":"post","link":"http:\/\/www.xiaoyebailong.com\/index.php\/2008\/12\/04\/194.htm","title":{"rendered":"rs.open sql,conn,1,1\u5168\u63a5\u89e6"},"content":{"rendered":"<p>\u7ecf\u5e38\u4f1a\u5728\u8fde\u63a5DB\u7684\u65f6\u5019\u7528\u5230\uff0c\u5c31\u662f\u4e0d\u77e5\u9053\u4ee3\u8868\u4ec0\u4e48\u610f\u601d&#8230;<\/p>\n<p>RS.OPEN&nbsp;SQL,CONN,A,B&nbsp; <\/p>\n<p>A:&nbsp;&nbsp; <\/p>\n<p>ADOPENFORWARDONLY(=0)&nbsp;&nbsp; <br \/>\n\u53ea\u8bfb,\u4e14\u5f53\u524d\u6570\u636e\u8bb0\u5f55\u53ea\u80fd\u5411\u4e0b\u79fb\u52a8&nbsp; <\/p>\n<p>ADOPENKEYSET(=1)&nbsp;&nbsp; <br \/>\n\u53ea\u8bfb,\u5f53\u524d\u6570\u636e\u8bb0\u5f55\u53ef\u81ea\u7531\u79fb\u52a8&nbsp; <\/p>\n<p>ADOPENDYNAMIC(=2)&nbsp;&nbsp; <br \/>\n\u53ef\u8bfb\u5199,\u5f53\u524d\u6570\u636e\u8bb0\u5f55\u53ef\u81ea\u7531\u79fb\u52a8&nbsp; <\/p>\n<p>ADOPENSTATIC(=3)&nbsp;&nbsp; <br \/>\n\u53ef\u8bfb\u5199,\u5f53\u524d\u6570\u636e\u8bb0\u5f55\u53ef\u81ea\u7531\u79fb\u52a8,\u53ef\u770b\u5230\u65b0\u589e\u8bb0\u5f55&nbsp; <\/p>\n<p>B:&nbsp; <\/p>\n<p>ADLOCKREADONLY(=1)&nbsp;&nbsp; <br \/>\n\u7f3a\u7701\u9501\u5b9a\u7c7b\u578b\uff0c\u8bb0\u5f55\u96c6\u662f\u53ea\u8bfb\u7684\uff0c\u4e0d\u80fd\u4fee\u6539\u8bb0\u5f55&nbsp; <\/p>\n<p>ADLOCKPESSIMISTIC(=2)&nbsp;&nbsp; <br \/>\n\u60b2\u89c2\u9501\u5b9a\uff0c\u5f53\u4fee\u6539\u8bb0\u5f55\u65f6\uff0c\u6570\u636e\u63d0\u4f9b\u8005\u5c06\u5c1d\u8bd5\u9501\u5b9a\u8bb0\u5f55\u4ee5\u786e\u4fdd\u6210\u529f\u5730\u7f16\u8f91\u8bb0\u5f55\u3002\u53ea\u8981\u7f16\u8f91\u4e00\u5f00\u59cb\uff0c\u5219\u7acb\u5373\u9501\u4f4f\u8bb0\u5f55\u3002&nbsp; <\/p>\n<p>ADLOCKOPTIMISTIC(=3)&nbsp;&nbsp; <br \/>\n\u4e50\u89c2\u9501\u5b9a&nbsp;\uff0c\u76f4\u5230\u7528Update\u65b9\u6cd5\u63d0\u4ea4\u66f4\u65b0\u8bb0\u5f55\u65f6\u624d\u9501\u5b9a\u8bb0\u5f55\u3002&nbsp; <\/p>\n<p>ADLOCKBATCHOPTIMISTIC(=4)&nbsp;&nbsp; <br \/>\n\u6279\u91cf\u4e50\u89c2\u9501\u5b9a\uff0c\u5141\u8bb8\u4fee\u6539\u591a\u4e2a\u8bb0\u5f55\uff0c\u53ea\u6709\u8c03\u7528UpdateBatch\u65b9\u6cd5\u540e\u624d\u9501\u5b9a\u8bb0\u5f55\u3002&nbsp; <\/p>\n<p>\u5f53\u4e0d\u9700\u8981\u6539\u52a8\u4efb\u4f55\u8bb0\u5f55\u65f6\uff0c\u5e94\u8be5\u4f7f\u7528\u53ea\u8bfb\u7684\u8bb0\u5f55\u96c6\uff0c\u8fd9\u6837\u63d0\u4f9b\u8005\u4e0d\u7528\u505a\u4efb\u4f55\u68c0\u6d4b\u3002&nbsp; <br \/>\n\u5bf9\u4e8e\u4e00\u822c\u7684\u4f7f\u7528\uff0c\u4e50\u89c2\u7684\u9501\u5b9a\u53ef\u80fd\u662f\u6700\u597d\u7684\u9009\u62e9\uff0c\u56e0\u4e3a\u8bb0\u5f55\u53ea\u88ab\u9501\u5b9a\u4e00\u5c0f\u6bb5\u65f6\u95f4\uff0c&nbsp; <br \/>\n\u6570\u636e\u5728\u8fd9\u6bb5\u65f6\u95f4\u88ab\u66f4\u65b0\u3002\u8fd9\u51cf\u5c11\u4e86\u8d44\u6e90\u7684\u4f7f\u7528\u3002&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ecf\u5e38\u4f1a\u5728\u8fde\u63a5DB\u7684\u65f6\u5019\u7528\u5230\uff0c\u5c31\u662f\u4e0d\u77e5\u9053\u4ee3\u8868\u4ec0\u4e48\u610f\u601d&#8230; RS.OPEN&nbsp;SQL,CONN,A,B&nbsp; A:&nbsp;&nbsp; ADOPENFORWARDONLY(=0)&nbsp;&nbsp; \u53ea\u8bfb,\u4e14\u5f53\u524d&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-194","post","type-post","status-publish","format-standard","hentry","category-technology"],"_links":{"self":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/comments?post=194"}],"version-history":[{"count":1,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/194\/revisions"}],"predecessor-version":[{"id":66069,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/posts\/194\/revisions\/66069"}],"wp:attachment":[{"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/media?parent=194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/categories?post=194"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/tags?post=194"},{"taxonomy":"topic","embeddable":true,"href":"http:\/\/www.xiaoyebailong.com\/index.php\/wp-json\/wp\/v2\/topic?post=194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}