{"id":31743,"date":"2023-05-26T11:08:32","date_gmt":"2023-05-26T03:08:32","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=31743"},"modified":"2023-07-31T00:10:50","modified_gmt":"2023-07-30T16:10:50","slug":"oracle%e6%80%8e%e6%a0%b7%e5%bf%ab%e9%80%9f%e5%88%a0%e9%99%a4%e5%a4%a7%e9%87%8f%e7%9a%84%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/31743.html","title":{"rendered":"oracle\u600e\u6837\u5feb\u901f\u5220\u9664\u5927\u91cf\u7684\u6570\u636e"},"content":{"rendered":"
\n

\u9488\u5bf9\u6570\u636e\u91cf\u6bd4\u8f83\u5927\u7684\u60c5\u51b5\u8f83\u597d\u662f\u5206\u8868\uff0c\u4f46\u662f\u5206\u8868\u662f\u6709\u4ee3\u4ef7\u7684\uff0c\u5206\u8868\u540e\u7a0b\u5e8f\u4e5f\u8981\u505a\u54cd\u5e94\u8c03\u6574\uff0c\u8fd9\u8981\u6c42\u5728\u524d\u671f\u89c4\u5212\u7684\u65f6\u5019\u5c31\u8981\u8003\u8651\u5230\u8fd9\u4e2a\u95ee\u9898\u3002\u66f4\u666e\u904d\u7684\u505a\u6cd5\u91c7\u7528\u5206\u533a\u6bd4\u8f83\u591a\uff08\u4e2a\u4eba\u770b\u6cd5\uff09\u540c\u65f6\u5bf9\u8001\u6570\u636e\u8fdb\u884c\u8f6c\u79fb\u3002<\/p>\n<\/blockquote>\n

\n
\"\"<\/figure>\n<\/div>\n

\u4e00\u3001oracle\u600e\u6837\u5feb\u901f\u5220\u9664\u5927\u91cf\u7684\u6570\u636e<\/strong><\/h2>\n

\u9488\u5bf9\u6570\u636e\u91cf\u6bd4\u8f83\u5927\u7684\u60c5\u51b5\u8f83\u597d\u662f\u5206\u8868\uff0c\u4f46\u662f\u5206\u8868\u662f\u6709\u4ee3\u4ef7\u7684\uff0c\u5206\u8868\u540e\u7a0b\u5e8f\u4e5f\u8981\u505a\u54cd\u5e94\u8c03\u6574\uff0c\u8fd9\u8981\u6c42\u5728\u524d\u671f\u89c4\u5212\u7684\u65f6\u5019\u5c31\u8981\u8003\u8651\u5230\u8fd9\u4e2a\u95ee\u9898\u3002\u66f4\u666e\u904d\u7684\u505a\u6cd5\u91c7\u7528\u5206\u533a\u6bd4\u8f83\u591a\uff08\u4e2a\u4eba\u770b\u6cd5\uff09\u540c\u65f6\u5bf9\u8001\u6570\u636e\u8fdb\u884c\u8f6c\u79fb\uff0c\u6bd4\u5982\u5bf9\u767b\u5f55\u65e5\u5fd7\u3001\u76d8\u5b58\u4fe1\u606f\u7b49\u53ef\u4ee5\u5c065\u5e74\u4ee5\u524d\u7684\u6570\u636e\u8fdb\u884c\u5f52\u6863\uff0c\u653e\u5230\u53e6\u5916\u4e00\u5f20\u8868\u4e2d\uff0c\u4f7f\u5728\u7528\u7684\u8868\u4fdd\u6301\u5728\u4e00\u5b9a\u7684\u6570\u636e\u91cf\uff08\u6bd4\u59821000\u4e07\uff0c500\u4e07\uff09\u3002\u90a3\u4e48\u5728\u5f52\u6863\u5b8c\u6210\u540e\u80af\u5b9a\u9700\u8981\u5bf9\u539f\u8868\u6570\u636e\u8fdb\u884c\u5220\u9664\uff0c\u8fd9\u4e2a\u65f6\u5019\u5220\u9664\u7684\u6570\u636e\u91cf\u53ef\u80fd\u5c31\u4f1a\u6bd4\u8f83\u5927(500\u4e07\uff0c1000\u4e07)\u3002\u90a3\u4e48\u5728\u5220\u9664\u5927\u91cf\u6570\u636e\u7684\u65b9\u6cd5\u6709\u54ea\u4e9b\u5462\uff1f\u672c\u6587\u9488\u5bf9oracle\u6570\u636e\u5e93\u4e3a\u4f8b\u8bf4\u660e\u5404\u79cd\u65b9\u6cd5\u3002<\/p>\n

1<\/strong>\u3001truncate\u547d\u4ee4<\/strong><\/h3>\n

\u5982\u679c\u8868\u6570\u636e\u90fd\u4e0d\u8981\u4e86\uff0c\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u547d\u4ee4\u3002\u6b64\u547d\u4ee4\u4e00\u65e6\u4f7f\u7528\u65e0\u6cd5\u6062\u590d\uff0c\u614e\u7528\uff01\uff01\uff01<\/p>\n

truncate table test;<\/p>\n

2<\/strong>\u3001\u4e34\u65f6\u8868<\/strong><\/h3>\n

\u5c06\u8868\u4e2d\u6570\u636e\u8f6c\u79fb\u5230\u4e34\u65f6\u8868\uff0c\u5bf9\u539f\u8868\u4f7f\u7528truncate\u547d\u4ee4\uff0c\u7136\u540e\u518d\u628a\u6570\u636e\u5bfc\u5165\u539f\u8868\u3002<\/p>\n

\u7f3a\u70b9\uff1a\u4e0d\u80fd\u5728\u7ebf\u4f7f\u7528<\/p>\n

3<\/strong>\u3001nologing\u6a21\u5f0f<\/strong><\/h3>\n

\u5177\u4f53\u7528\u6cd5\u53ef\u4ee5\u67e5\u770b\u8fd9\u7bc7\u6587\u7ae0oracle nologging\u7528\u6cd5\uff08\u8f6c\uff09 \u2013 \u6ca7\u6d77\u4e00\u6ef4 \u2013 \u535a\u5ba2\u56ed<\/p>\n

create table test_bak nologging as select * from test;<\/p>\n

4<\/strong>\u3001parallel<\/strong><\/h3>\n

delete \/*+ parallel(\u5e76\u884c\u5ea6) *\/ test where \u2026;<\/p>\n

\u5e76\u884c\u5ea6\u53ef\u4ee5\u6307\u5b9a\u4e3acpu\u7684\u6838\u6570\u3002<\/p>\n

\u7f3a\u70b9\uff1a\u53ef\u80fd\u4f1a\u628a\u6570\u636e\u5e93\u641e\u6b7b<\/p>\n

5<\/strong>\u3001\u5316\u6574\u4e3a\u96f6<\/strong><\/h3>\n

\u6b64\u65b9\u6cd5\u5c31\u662f\u4e00\u6b21\u5220\u9664\u5c11\u4e00\u70b9\u6570\u636e\uff0c\u6bd4\u5982\u4e00\u6b21\u53ea\u5220\u9664\u4e00\u4e2a\u6708\uff0c\u662f\u4e00\u79cd\u7b28\u65b9\u6cd5\u3002<\/p>\n

DECLARE<\/p>\n

\u00a0 v_nums\u00a0\u00a0\u00a0\u00a0\u00a0 INTEGER := 24;<\/p>\n

\u00a0 v_start\u00a0\u00a0\u00a0\u00a0 VARCHAR2(10);<\/p>\n

\u00a0 v_startdate DATE;<\/p>\n

\u00a0 v_enddate\u00a0\u00a0 DATE;<\/p>\n

\u00a0 v_1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 INTEGER;<\/p>\n

BEGIN<\/p>\n

\u00a0 v_start := \u20182019-01-01\u2019; \u2013\u5f00\u59cb\u65e5\u671f<\/p>\n

\u00a0 FOR v_1 IN 1 .. v_nums<\/p>\n

\u00a0 LOOP<\/p>\n

\u00a0\u00a0\u00a0 v_startdate := add_months(to_date(v_start, \u2018yyyy-mm-dd\u2019), v_1 \u2013 1);<\/p>\n

\u00a0\u00a0\u00a0 v_enddate\u00a0\u00a0 := add_months(v_startdate, 1);<\/p>\n

\u00a0\u00a0\u00a0 dbms_output.put_line(v_1 || \u2018-\u2018 || v_startdate || \u2018-\u2018 || v_enddate);<\/p>\n

\u00a0\u00a0\u00a0 DELETE FROM dd_goods_inventory_bak t<\/p>\n

\u00a0\u00a0\u00a0\u00a0 WHERE t.querydate < v_enddate<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 AND t.querydate >= v_startdate;<\/p>\n

\u00a0\u00a0\u00a0 COMMIT;<\/p>\n

\u00a0 END LOOP;<\/p>\n

END\u3002<\/p>\n

\u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n

\u4e8c\u3001\u5b9e\u4f8b\uff08instance\uff09\u662f\u4ec0\u4e48<\/strong><\/h2>\n

\u4e00\u7ec4Oracle \u540e\u53f0\u8fdb\u7a0b\/\u7ebf\u7a0b\u4ee5\u53ca\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u533a\uff0c\u8fd9\u4e9b\u5185\u5b58\u7531\u540c\u4e00\u4e2a\u8ba1\u7b97\u673a\u4e0a\u8fd0\u884c\u7684\u7ebf\u7a0b\/\u8fdb\u7a0b\u6240\u5171\u4eab\u3002\u8fd9\u91cc\u53ef\u4ee5\u7ef4\u62a4\u6613\u5931\u7684\u3001\u975e\u6301\u4e45\u6027\u5185\u5bb9\uff08\u6709\u4e9b\u53ef\u4ee5\u5237\u65b0\u8f93\u51fa\u5230\u78c1\u76d8\uff09\u3002\u5c31\u7b97\u6ca1\u6709\u78c1\u76d8\u5b58\u50a8\uff0c\u6570\u636e\u5e93\u5b9e\u4f8b\u4e5f\u80fd\u5b58\u5728\u3002\u4e5f\u8bb8\u5b9e\u4f8b\u4e0d\u80fd\u7b97\u662f\u4e16\u754c\u4e0a\u6700\u6709\u7528\u7684\u4e8b\u7269\uff0c\u4e0d\u8fc7\u4f60\u5b8c\u5168\u53ef\u4ee5\u628a\u5b83\u60f3\u6210\u662f\u6700\u6709\u7528\u7684\u4e8b\u7269\uff0c\u8fd9\u6709\u52a9\u4e8e\u5bf9\u5b9e\u4f8b\u548c\u6570\u636e\u5e93\u5212\u6e05\u754c\u7ebf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u9488\u5bf9\u6570\u636e\u91cf\u6bd4\u8f83\u5927\u7684\u60c5\u51b5\u8f83\u597d\u662f\u5206\u8868\uff0c\u4f46\u662f\u5206\u8868\u662f\u6709\u4ee3\u4ef7\u7684\uff0c\u5206\u8868\u540e\u7a0b\u5e8f\u4e5f\u8981\u505a\u54cd\u5e94\u8c03\u6574\uff0c\u8fd9\u8981\u6c42\u5728\u524d\u671f\u89c4\u5212\u7684\u65f6\u5019\u5c31\u8981\u8003\u8651 […]","protected":false},"author":1,"featured_media":31744,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/31743"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=31743"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/31743\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/31744"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=31743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=31743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=31743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}