{"id":51532,"date":"2024-12-03T12:03:46","date_gmt":"2024-12-03T04:03:46","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51532\/"},"modified":"2024-12-03T12:03:46","modified_gmt":"2024-12-03T04:03:46","slug":"%e5%88%86%e4%ba%ab%e5%a6%82%e4%bd%95%e5%9c%a8oracle%e4%b8%ad%e6%9b%b4%e6%94%b9%e6%97%a5%e6%9c%9f-%e6%97%b6%e9%97%b4%e6%a0%bc%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51532\/","title":{"rendered":"\u5206\u4eab\u5982\u4f55\u5728Oracle\u4e2d\u66f4\u6539\u65e5\u671f\/\u65f6\u95f4\u683c\u5f0f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5206\u4eab\u5982\u4f55\u5728Oracle\u4e2d\u66f4\u6539\u65e5\u671f\/\u65f6\u95f4\u683c\u5f0f<\/h1>\n<\/p>\n

\u6807\u9898\uff1aOracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u7684\u6b65\u9aa4\u5206\u4eab\u53ca\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u65f6\u95f4\u683c\u5f0f\u7684\u663e\u793a\u5bf9\u4e8e\u6570\u636e\u5206\u6790\u548c\u62a5\u8868\u8f93\u51fa\u81f3\u5173\u91cd\u8981\u3002\u6b63\u786e\u7684\u65f6\u95f4\u683c\u5f0f\u53ef\u4ee5\u4f7f\u6570\u636e\u66f4\u52a0\u76f4\u89c2\u6e05\u6670\uff0c\u63d0\u9ad8\u6570\u636e\u5904\u7406\u6548\u7387\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5c06\u6570\u636e\u5e93\u4e2d\u7684\u65f6\u95f4\u5b57\u6bb5\u4fee\u6539\u4e3a\u7279\u5b9a\u7684\u683c\u5f0f\uff0c\u8fd9\u5c31\u9700\u8981\u8fdb\u884c\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\u3002\u63a5\u4e0b\u6765\u672c\u6587\u5c06\u5206\u4eab\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u7684\u5177\u4f53\u6b65\u9aa4\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u4ee5\u4f9b\u53c2\u8003\u3002<\/p>\n

1. \u67e5\u770b\u539f\u59cb\u65f6\u95f4\u683c\u5f0f<\/h3>\n

\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3\u6570\u636e\u5e93\u4e2d\u6240\u5b58\u50a8\u7684\u65f6\u95f4\u5b57\u6bb5\u7684\u539f\u59cb\u683c\u5f0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0bSQL\u8bed\u53e5\u67e5\u770b\uff1a<\/p>\n

SELECT TO_CHAR(<\u5b57\u6bb5\u540d>, 'YYYY-MM-DD HH24:MI:SS') AS time_format\nFROM <\u8868\u540d><\/pre>\n
2. \u4fee\u6539\u65f6\u95f4\u683c\u5f0f<\/h3>\n
\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528TO_CHAR<\/code>\u51fd\u6570\u5bf9\u65f6\u95f4\u5b57\u6bb5\u8fdb\u884c\u683c\u5f0f\u8f6c\u6362\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c06\u65f6\u95f4\u5b57\u6bb5\u4fee\u6539\u4e3a\u5e74-\u6708-\u65e5 \u65f6:\u5206:\u79d2\u7684\u683c\u5f0f\uff1a<\/p>\n
SELECT TO_CHAR(<\u5b57\u6bb5\u540d>, 'YYYY-MM-DD HH24:MI:SS') AS new_time_format\nFROM <\u8868\u540d><\/pre>\n
3. \u66f4\u65b0\u65f6\u95f4\u5b57\u6bb5\u683c\u5f0f<\/h3>\n
\u5982\u679c\u9700\u8981\u5c06\u65f6\u95f4\u5b57\u6bb5\u7684\u683c\u5f0f\u6c38\u4e45\u4fee\u6539\u4e3a\u7279\u5b9a\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE<\/code>\u8bed\u53e5\u66f4\u65b0\u8868\u4e2d\u7684\u65f6\u95f4\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u66f4\u65b0\u65f6\u95f4\u5b57\u6bb5\u683c\u5f0f\u7684\u793a\u4f8b\uff0c\u5c06\u65f6\u95f4\u5b57\u6bb5\u4fee\u6539\u4e3a\u5e74-\u6708-\u65e5\u683c\u5f0f\uff1a<\/p>\n
UPDATE <\u8868\u540d>\nSET <\u5b57\u6bb5\u540d> = TO_CHAR(<\u5b57\u6bb5\u540d>, 'YYYY-MM-DD')<\/pre>\n
4. \u521b\u5efa\u65b0\u7684\u65f6\u95f4\u683c\u5f0f\u5b57\u6bb5<\/h3>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u80fd\u5e0c\u671b\u4fdd\u7559\u539f\u59cb\u65f6\u95f4\u5b57\u6bb5\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b57\u6bb5\u6765\u5b58\u50a8\u7279\u5b9a\u683c\u5f0f\u7684\u65f6\u95f4\u3002\u53ef\u4ee5\u4f7f\u7528ALTER TABLE<\/code>\u8bed\u53e5\u6dfb\u52a0\u65b0\u7684\u65f6\u95f4\u683c\u5f0f\u5b57\u6bb5\uff1a<\/p>\n
ALTER TABLE <\u8868\u540d>\nADD new_time_format VARCHAR2(30);\n\nUPDATE <\u8868\u540d>\nSET new_time_format = TO_CHAR(<\u5b57\u6bb5\u540d>, 'YYYY-MM-DD HH24:MI:SS');<\/pre>\n
\u603b\u7ed3<\/h3>\n
\u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Oracle\u6570\u636e\u5e93\u4e2d\u8f7b\u677e\u5730\u4fee\u6539\u65f6\u95f4\u5b57\u6bb5\u7684\u683c\u5f0f\u3002\u65e0\u8bba\u662f\u4e34\u65f6\u67e5\u770b\u7279\u5b9a\u65f6\u95f4\u683c\u5f0f\u8fd8\u662f\u6c38\u4e45\u66f4\u65b0\u65f6\u95f4\u5b57\u6bb5\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7TO_CHAR<\/code>\u51fd\u6570\u6765\u5b9e\u73b0\u3002\u5728\u5b9e\u9645\u7684\u6570\u636e\u5904\u7406\u8fc7\u7a0b\u4e2d\uff0c\u6b63\u786e\u7684\u65f6\u95f4\u683c\u5f0f\u663e\u793a\u5c06\u6709\u5229\u4e8e\u6570\u636e\u5206\u6790\u548c\u62a5\u8868\u8f93\u51fa\u3002<\/p>\n
\u4ee5\u4e0a\u4fbf\u662f\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u7684\u6b65\u9aa4\u5206\u4eab\u53ca\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u60a8\u5728\u65f6\u95f4\u5b57\u6bb5\u683c\u5f0f\u8f6c\u6362\u65b9\u9762\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5206\u4eab\u5982\u4f55\u5728Oracle\u4e2d\u66f4\u6539\u65e5\u671f\/\u65f6\u95f4\u683c\u5f0f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u5427\uff01<\/p>\n
\n
<\/dt>\n
\n   \u4e3a\u4ec0\u4e48\u76f4\u63a5\u521d\u59cb\u5316\u548c\u901a\u8fc7 make \u521d\u59cb\u5316\u65f6\u5b57\u8282\u7684\u8868\u793a\u4e0d\u540c\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5206\u4eab\u5982\u4f55\u5728Oracle\u4e2d\u66f4\u6539\u65e5\u671f\/\u65f6\u95f4\u683c\u5f0f \u6807\u9898\uff1aOracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u7684\u6b65\u9aa4\u5206\u4eab\u53ca\u5177\u4f53\u4ee3\u7801\u793a\u4f8b \u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u65f6\u95f4\u683c\u5f0f\u7684\u663e\u793a\u5bf9\u4e8e\u6570\u636e\u5206\u6790\u548c\u62a5\u8868\u8f93\u51fa\u81f3\u5173\u91cd\u8981\u3002\u6b63\u786e\u7684\u65f6\u95f4\u683c\u5f0f\u53ef\u4ee5\u4f7f\u6570\u636e\u66f4\u52a0\u76f4\u89c2\u6e05\u6670\uff0c\u63d0\u9ad8\u6570\u636e\u5904\u7406\u6548\u7387\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5c06\u6570\u636e\u5e93\u4e2d\u7684\u65f6\u95f4\u5b57\u6bb5\u4fee\u6539\u4e3a\u7279\u5b9a\u7684\u683c\u5f0f\uff0c\u8fd9\u5c31\u9700\u8981\u8fdb\u884c\u65f6\u95f4\u683c\u5f0f\u7684\u8f6c\u6362\u3002\u63a5\u4e0b\u6765\u672c\u6587\u5c06\u5206\u4eab\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u7684\u5177\u4f53\u6b65\u9aa4\uff0c\u5e76\u63d0\u4f9b\u4ee3\u7801\u793a\u4f8b\u4ee5\u4f9b\u53c2\u8003\u3002 1. \u67e5\u770b\u539f\u59cb\u65f6\u95f4\u683c\u5f0f \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3\u6570\u636e\u5e93\u4e2d\u6240\u5b58\u50a8\u7684\u65f6\u95f4\u5b57\u6bb5\u7684\u539f\u59cb\u683c\u5f0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0bSQL\u8bed\u53e5\u67e5\u770b\uff1a SELECT TO_CHAR(<\u5b57\u6bb5\u540d>, ‘YYYY-MM-DD HH24:MI:SS’) AS time_format FROM <\u8868\u540d> 2. \u4fee\u6539\u65f6\u95f4\u683c\u5f0f \u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528TO_CHAR\u51fd\u6570\u5bf9\u65f6\u95f4\u5b57\u6bb5\u8fdb\u884c\u683c\u5f0f\u8f6c\u6362\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u5c06\u65f6\u95f4\u5b57\u6bb5\u4fee\u6539\u4e3a\u5e74-\u6708-\u65e5 \u65f6:\u5206:\u79d2\u7684\u683c\u5f0f\uff1a SELECT TO_CHAR(<\u5b57\u6bb5\u540d>, ‘YYYY-MM-DD HH24:MI:SS’) AS new_time_format FROM <\u8868\u540d> 3. \u66f4\u65b0\u65f6\u95f4\u5b57\u6bb5\u683c\u5f0f \u5982\u679c\u9700\u8981\u5c06\u65f6\u95f4\u5b57\u6bb5\u7684\u683c\u5f0f\u6c38\u4e45\u4fee\u6539\u4e3a\u7279\u5b9a\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8bed\u53e5\u66f4\u65b0\u8868\u4e2d\u7684\u65f6\u95f4\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u66f4\u65b0\u65f6\u95f4\u5b57\u6bb5\u683c\u5f0f\u7684\u793a\u4f8b\uff0c\u5c06\u65f6\u95f4\u5b57\u6bb5\u4fee\u6539\u4e3a\u5e74-\u6708-\u65e5\u683c\u5f0f\uff1a UPDATE <\u8868\u540d> SET <\u5b57\u6bb5\u540d> = TO_CHAR(<\u5b57\u6bb5\u540d>, ‘YYYY-MM-DD’) 4. \u521b\u5efa\u65b0\u7684\u65f6\u95f4\u683c\u5f0f\u5b57\u6bb5 \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u80fd\u5e0c\u671b\u4fdd\u7559\u539f\u59cb\u65f6\u95f4\u5b57\u6bb5\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b57\u6bb5\u6765\u5b58\u50a8\u7279\u5b9a\u683c\u5f0f\u7684\u65f6\u95f4\u3002\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u6dfb\u52a0\u65b0\u7684\u65f6\u95f4\u683c\u5f0f\u5b57\u6bb5\uff1a ALTER TABLE <\u8868\u540d> ADD new_time_format VARCHAR2(30); UPDATE <\u8868\u540d> SET new_time_format = TO_CHAR(<\u5b57\u6bb5\u540d>, ‘YYYY-MM-DD HH24:MI:SS’); \u603b\u7ed3 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-51532","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51532","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=51532"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/51532\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=51532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=51532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=51532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}