{"id":5954,"date":"2024-11-14T12:26:39","date_gmt":"2024-11-14T04:26:39","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5954\/"},"modified":"2024-11-14T12:26:39","modified_gmt":"2024-11-14T04:26:39","slug":"sql%e5%a6%82%e4%bd%95%e6%96%ad%e5%bc%80%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5954\/","title":{"rendered":"sql\u5982\u4f55\u65ad\u5f00\u6570\u636e\u5e93\u7684\u4f7f\u7528"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u4ee5\u4f7f\u7528 sql \u8bed\u53e5\u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5305\u62ec\uff1a1. close \u8bed\u53e5\uff1a\u7acb\u5373\u5173\u95ed\u6307\u5b9a\u8fde\u63a5\uff1b2. disconnect \u8bed\u53e5\uff1a\u5173\u95ed\u8fde\u63a5\u5e76\u91ca\u653e\u8d44\u6e90\uff1b3. end transaction \u8bed\u53e5\uff1a\u63d0\u4ea4\/\u56de\u6eda\u4e8b\u52a1\u5e76\u65ad\u5f00\u8fde\u63a5\uff1b4. exit \u8bed\u53e5\uff1a\u7ec8\u6b62\u811a\u672c\u5e76\u5173\u95ed\u6240\u6709\u8fde\u63a5\uff1b5. \u8fde\u63a5\u5bf9\u8c61\u65b9\u6cd5\uff08\u7279\u5b9a\u4e8e\u6570\u636e\u5e93\u7cfb\u7edf\uff09\u3002\u6b64\u5916\uff0c\u5efa\u8bae\u5728\u65ad\u5f00\u8fde\u63a5\u524d\u63d0\u4ea4\u6216\u56de\u6eda\u672a\u5b8c\u6210\u7684\u4e8b\u52a1\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/06\/2024060609242417188.jpg\" class=\"aligncenter\" title=\"sql\u5982\u4f55\u65ad\u5f00\u6570\u636e\u5e93\u7684\u4f7f\u7528\u63d2\u56fe\" alt=\"sql\u5982\u4f55\u65ad\u5f00\u6570\u636e\u5e93\u7684\u4f7f\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5<\/strong><\/p>\n<p>\u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5\u662f\u4e00\u4e2a\u5fc5\u8981\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u4e0d\u518d\u9700\u8981\u5b83\u6216\u8981\u91ca\u653e\u7cfb\u7edf\u8d44\u6e90\u65f6\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 SQL \u65ad\u5f00\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 CLOSE \u8bed\u53e5<\/strong><\/p>\n<p>\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 CLOSE \u8bed\u53e5\u3002\u5b83\u4f1a\u7acb\u5373\u5173\u95ed\u6307\u5b9a\u7684\u6570\u636e\u5e93\u8fde\u63a5\uff1a<\/p>\n<pre>CLOSE connection_name;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>2. \u4f7f\u7528 DISCONNECT \u8bed\u53e5<\/strong><\/p>\n<p>DISCONNECT \u8bed\u53e5\u4e0e CLOSE \u8bed\u53e5\u7c7b\u4f3c\uff0c\u4f46\u5b83\u9664\u4e86\u5173\u95ed\u8fde\u63a5\u5916\uff0c\u8fd8\u4f1a\u91ca\u653e\u4e0e\u8be5\u8fde\u63a5\u5173\u8054\u7684\u6240\u6709\u670d\u52a1\u5668\u8d44\u6e90\uff1a<\/p>\n<pre>DISCONNECT;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>3. \u4f7f\u7528 END TRANSACTION \u8bed\u53e5<\/strong><\/p>\n<p>\u5982\u679c\u6570\u636e\u5e93\u5904\u4e8e\u4e8b\u52a1\u4e2d\uff0cEND TRANSACTION \u8bed\u53e5\u4f1a\u63d0\u4ea4\u6216\u56de\u6eda\u4e8b\u52a1\uff0c\u5e76\u65ad\u5f00\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff1a<\/p>\n<pre>END TRANSACTION;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>4. \u4f7f\u7528 EXIT \u8bed\u53e5<\/strong><\/p>\n<p>EXIT \u8bed\u53e5\u4f1a\u7acb\u5373\u7ec8\u6b62\u5f53\u524d\u811a\u672c\u6216\u6279\u5904\u7406\u6587\u4ef6\uff0c\u5e76\u5173\u95ed\u6240\u6709\u6253\u5f00\u7684\u8fde\u63a5\uff1a<\/p>\n<pre>EXIT;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>5. \u4f7f\u7528 \u8fde\u63a5\u5bf9\u8c61\u65b9\u6cd5\uff08\u4ec5\u9002\u7528\u4e8e\u67d0\u4e9b\u6570\u636e\u5e93\u7cfb\u7edf\uff09<\/strong><\/p>\n<p>\u67d0\u4e9b\u6570\u636e\u5e93\u7cfb\u7edf\uff08\u5982 Python \u4e2d\u7684 psycopg2\uff09\u63d0\u4f9b\u4e86\u8fde\u63a5\u5bf9\u8c61\u65b9\u6cd5\u6765\u65ad\u5f00\u8fde\u63a5\uff1a<\/p>\n<pre>import psycopg2\n\nconnection = psycopg2.connect(...)\n\n# \u65ad\u5f00\u8fde\u63a5\nconnection.close()<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u5728\u6240\u6709\u60c5\u51b5\u4e0b\uff0c\u5728\u65ad\u5f00\u8fde\u63a5\u4e4b\u524d\u6700\u597d\u5148\u63d0\u4ea4\u6216\u56de\u6eda\u4efb\u4f55\u672a\u5b8c\u6210\u7684\u4e8b\u52a1\u3002<\/li>\n<li>\u5177\u4f53\u8bed\u6cd5\u548c\u53ef\u7528\u9009\u9879\u53ef\u80fd\u56e0\u60a8\u4f7f\u7528\u7684\u6570\u636e\u5e93\u7cfb\u7edf\u800c\u5f02\u3002\u8bf7\u53c2\u9605\u6570\u636e\u5e93\u6587\u6863\u4ee5\u83b7\u53d6\u51c6\u786e\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u5982\u4f55\u65ad\u5f00\u6570\u636e\u5e93\u7684\u4f7f\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53ef\u4ee5\u4f7f\u7528 sql \u8bed\u53e5\u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u5305\u62ec\uff1a1. close \u8bed\u53e5\uff1a\u7acb\u5373\u5173\u95ed\u6307\u5b9a\u8fde\u63a5\uff1b2. disconnect \u8bed\u53e5\uff1a\u5173\u95ed\u8fde\u63a5\u5e76\u91ca\u653e\u8d44\u6e90\uff1b3. end transaction \u8bed\u53e5\uff1a\u63d0\u4ea4\/\u56de\u6eda\u4e8b\u52a1\u5e76\u65ad\u5f00\u8fde\u63a5\uff1b4. exit \u8bed\u53e5\uff1a\u7ec8\u6b62\u811a\u672c\u5e76\u5173\u95ed\u6240\u6709\u8fde\u63a5\uff1b5. \u8fde\u63a5\u5bf9\u8c61\u65b9\u6cd5\uff08\u7279\u5b9a\u4e8e\u6570\u636e\u5e93\u7cfb\u7edf\uff09\u3002\u6b64\u5916\uff0c\u5efa\u8bae\u5728\u65ad\u5f00\u8fde\u63a5\u524d\u63d0\u4ea4\u6216\u56de\u6eda\u672a\u5b8c\u6210\u7684\u4e8b\u52a1\u3002 SQL \u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5 \u65ad\u5f00\u6570\u636e\u5e93\u8fde\u63a5\u662f\u4e00\u4e2a\u5fc5\u8981\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u4e0d\u518d\u9700\u8981\u5b83\u6216\u8981\u91ca\u653e\u7cfb\u7edf\u8d44\u6e90\u65f6\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 SQL \u65ad\u5f00\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff1a 1. \u4f7f\u7528 CLOSE \u8bed\u53e5 \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 CLOSE \u8bed\u53e5\u3002\u5b83\u4f1a\u7acb\u5373\u5173\u95ed\u6307\u5b9a\u7684\u6570\u636e\u5e93\u8fde\u63a5\uff1a CLOSE connection_name; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 DISCONNECT \u8bed\u53e5 DISCONNECT \u8bed\u53e5\u4e0e CLOSE \u8bed\u53e5\u7c7b\u4f3c\uff0c\u4f46\u5b83\u9664\u4e86\u5173\u95ed\u8fde\u63a5\u5916\uff0c\u8fd8\u4f1a\u91ca\u653e\u4e0e\u8be5\u8fde\u63a5\u5173\u8054\u7684\u6240\u6709\u670d\u52a1\u5668\u8d44\u6e90\uff1a DISCONNECT; \u767b\u5f55\u540e\u590d\u5236 3. \u4f7f\u7528 END TRANSACTION \u8bed\u53e5 \u5982\u679c\u6570\u636e\u5e93\u5904\u4e8e\u4e8b\u52a1\u4e2d\uff0cEND TRANSACTION \u8bed\u53e5\u4f1a\u63d0\u4ea4\u6216\u56de\u6eda\u4e8b\u52a1\uff0c\u5e76\u65ad\u5f00\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff1a END TRANSACTION; \u767b\u5f55\u540e\u590d\u5236 4. \u4f7f\u7528 EXIT \u8bed\u53e5 EXIT \u8bed\u53e5\u4f1a\u7acb\u5373\u7ec8\u6b62\u5f53\u524d\u811a\u672c\u6216\u6279\u5904\u7406\u6587\u4ef6\uff0c\u5e76\u5173\u95ed\u6240\u6709\u6253\u5f00\u7684\u8fde\u63a5\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5954","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5954","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5954"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5954\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}