{"id":15911,"date":"2023-12-04T23:50:32","date_gmt":"2023-12-04T15:50:32","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15911"},"modified":"2023-12-04T23:59:32","modified_gmt":"2023-12-04T15:59:32","slug":"oracle-zhong-truncate-he-delete-ming-ling-de-yi-to","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-truncate-he-delete-ming-ling-de-yi-to\/","title":{"rendered":"Oracle \u4e2d truncate \u548c delete \u547d\u4ee4\u7684\u5f02\u540c\uff1f"},"content":{"rendered":"<p><code>TRUNCATE<\/code> \u548c <code>DELETE<\/code> \u662f Oracle \u6570\u636e\u5e93\u4e2d\u7528\u4e8e\u5220\u9664\u6570\u636e\u7684\u4e24\u4e2a\u4e0d\u540c\u7684\u547d\u4ee4\uff0c\u5b83\u4eec\u4e4b\u95f4\u6709\u4e00\u4e9b\u91cd\u8981\u7684\u5f02\u540c\u70b9\uff1a<\/p>\n<p>**1. <strong>\u6267\u884c\u901f\u5ea6\uff1a<\/strong><\/p>\n<ul>\n<li><strong>TRUNCATE\uff1a<\/strong> TRUNCATE \u901a\u5e38\u6bd4 DELETE \u66f4\u5feb\uff0c\u56e0\u4e3a TRUNCATE \u662f\u4e00\u4e2aDDL\uff08\u6570\u636e\u5b9a\u4e49\u8bed\u8a00\uff09\u547d\u4ee4\uff0c\u5b83\u76f4\u63a5\u91ca\u653e\u8868\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u800c\u4e0d\u662f\u9010\u884c\u5220\u9664\u6570\u636e\u3002TRUNCATE \u662f\u901a\u8fc7\u91ca\u653e\u8868\u7684\u6570\u636e\u6bb5\u5e76\u91cd\u5efa\u8868\u6765\u5b9e\u73b0\u7684\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> DELETE \u662f\u4e00\u4e2a DML\uff08\u6570\u636e\u64cd\u4f5c\u8bed\u8a00\uff09\u547d\u4ee4\uff0c\u5b83\u9010\u884c\u5220\u9664\u6570\u636e\u5e76\u8bb0\u5f55\u4e8b\u52a1\u65e5\u5fd7\uff0c\u53ef\u80fd\u9700\u8981\u66f4\u591a\u7684\u65f6\u95f4\uff0c\u7279\u522b\u662f\u5728\u5220\u9664\u5927\u91cf\u6570\u636e\u65f6\u3002<\/li>\n<\/ul>\n<p>**2. <strong>\u56de\u6eda\u548c\u4e8b\u52a1\uff1a<\/strong><\/p>\n<ul>\n<li><strong>TRUNCATE\uff1a<\/strong> TRUNCATE \u4e0d\u4f1a\u751f\u6210\u4e8b\u52a1\u65e5\u5fd7\uff0c\u5e76\u4e14\u4e0d\u80fd\u56de\u6eda\u3002\u4e00\u65e6\u6267\u884c TRUNCATE\uff0c\u5c31\u65e0\u6cd5\u56de\u6eda\u5230\u4e4b\u524d\u7684\u72b6\u6001\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> DELETE \u751f\u6210\u4e8b\u52a1\u65e5\u5fd7\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u56de\u6eda\u64a4\u6d88\u5220\u9664\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>**3. <strong>\u6761\u4ef6\u5220\u9664\uff1a<\/strong><\/p>\n<ul>\n<li><strong>TRUNCATE\uff1a<\/strong> TRUNCATE \u4e0d\u652f\u6301\u5e26\u6709 WHERE \u5b50\u53e5\u7684\u6761\u4ef6\u5220\u9664\u3002\u5b83\u603b\u662f\u5220\u9664\u6574\u4e2a\u8868\u4e2d\u7684\u6570\u636e\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> DELETE \u53ef\u4ee5\u6839\u636e WHERE \u5b50\u53e5\u4e2d\u6307\u5b9a\u7684\u6761\u4ef6\u9009\u62e9\u6027\u5730\u5220\u9664\u6570\u636e\u3002<\/li>\n<\/ul>\n<p>**4. <strong>\u89e6\u53d1\u5668\uff1a<\/strong><\/p>\n<ul>\n<li><strong>TRUNCATE\uff1a<\/strong> TRUNCATE \u4e0d\u4f1a\u89e6\u53d1\u5220\u9664\u89e6\u53d1\u5668\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> DELETE \u53ef\u4ee5\u89e6\u53d1\u4e0e DELETE \u64cd\u4f5c\u76f8\u5173\u8054\u7684\u5220\u9664\u89e6\u53d1\u5668\u3002<\/li>\n<\/ul>\n<p>**5. <strong>\u5b58\u50a8\u7a7a\u95f4\u7684\u91ca\u653e\uff1a<\/strong><\/p>\n<ul>\n<li><strong>TRUNCATE\uff1a<\/strong> TRUNCATE \u91ca\u653e\u8868\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u5e76\u5c06\u8868\u91cd\u7f6e\u4e3a\u521d\u59cb\u72b6\u6001\u3002\u7531\u4e8e TRUNCATE \u662f\u4e00\u4e2aDDL\u64cd\u4f5c\uff0c\u5b83\u5c06\u8868\u7684\u5b58\u50a8\u7ed3\u6784\u91cd\u65b0\u521d\u59cb\u5316\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> DELETE \u9010\u884c\u5220\u9664\u6570\u636e\uff0c\u4f46\u4e0d\u4f1a\u91ca\u653e\u8868\u7684\u5b58\u50a8\u7a7a\u95f4\u3002\u5220\u9664\u540e\uff0c\u8868\u7684\u5b58\u50a8\u7ed3\u6784\u4ecd\u7136\u5305\u542b\u5df2\u5220\u9664\u6570\u636e\u7684\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<p>**6. <strong>\u4e8b\u52a1\u548c\u9501\uff1a<\/strong><\/p>\n<ul>\n<li><strong>TRUNCATE\uff1a<\/strong> TRUNCATE \u662f\u4e00\u4e2a\u81ea\u52a8\u63d0\u4ea4\u7684\u64cd\u4f5c\uff0c\u5b83\u4e0d\u5728\u4e8b\u52a1\u4e2d\u6267\u884c\u3002\u5b83\u4e5f\u4f1a\u5728\u6267\u884c\u65f6\u83b7\u53d6\u8868\u7ea7\u522b\u7684\u6392\u4ed6\u9501\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> DELETE \u9ed8\u8ba4\u5728\u4e8b\u52a1\u4e2d\u6267\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\u6765\u63a7\u5236\u63d0\u4ea4\u6216\u56de\u6eda\u3002DELETE \u65f6\u83b7\u53d6\u9010\u884c\u7684\u9501\uff0c\u53ef\u80fd\u4f1a\u5f15\u8d77\u9501\u51b2\u7a81\u3002<\/li>\n<\/ul>\n<p>\u603b\u4f53\u800c\u8a00\uff0c\u9009\u62e9\u4f7f\u7528 <code>TRUNCATE<\/code> \u8fd8\u662f <code>DELETE<\/code> \u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u9700\u6c42\u3002\u5982\u679c\u9700\u8981\u5feb\u901f\u5220\u9664\u6574\u4e2a\u8868\u4e2d\u7684\u6570\u636e\u5e76\u91ca\u653e\u5b58\u50a8\u7a7a\u95f4\uff0c\u800c\u4e14\u4e0d\u5173\u5fc3\u4e8b\u52a1\u548c\u89e6\u53d1\u5668\uff0c\u90a3\u4e48 <code>TRUNCATE<\/code> \u53ef\u80fd\u66f4\u5408\u9002\u3002\u5982\u679c\u9700\u8981\u6761\u4ef6\u5220\u9664\u3001\u4e8b\u52a1\u63a7\u5236\u3001\u89e6\u53d1\u5668\u6267\u884c\u6216\u56de\u6eda\u80fd\u529b\uff0c\u90a3\u4e48 <code>DELETE<\/code> \u66f4\u4e3a\u9002\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TRUNCATE \u548c DELETE \u662f Oracle \u6570\u636e\u5e93\u4e2d\u7528\u4e8e\u5220\u9664\u6570\u636e\u7684\u4e24\u4e2a\u4e0d\u540c\u7684\u547d\u4ee4\uff0c\u5b83\u4eec\u4e4b\u95f4\u6709\u4e00\u4e9b\u91cd\u8981 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15911","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15911"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15911\/revisions"}],"predecessor-version":[{"id":15912,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15911\/revisions\/15912"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15911"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}