{"id":5310,"date":"2024-11-14T12:48:14","date_gmt":"2024-11-14T04:48:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5310\/"},"modified":"2024-11-14T12:48:14","modified_gmt":"2024-11-14T04:48:14","slug":"oracle%e6%80%8e%e4%b9%88%e6%9b%bf%e6%8d%a2%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5310\/","title":{"rendered":"oracle\u600e\u4e48\u66ff\u6362\u5b57\u7b26\u4e32"},"content":{"rendered":"

\n oracle \u4e2d\u66ff\u6362\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528 replace \u51fd\u6570\uff0c\u8bed\u6cd5\u4e3a replace(string, search_string, replacement_string)\uff0c\u53ef\u7528\u4e8e\u66ff\u6362\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u6307\u5b9a\u5b57\u7b26\u4e32\uff0c\u8fd8\u652f\u6301 n \u6b21\u66ff\u6362\u548c\u533a\u5206\u5927\u5c0f\u5199\u66ff\u6362\u7b49\u9ad8\u7ea7\u9009\u9879\u3002\n<\/p><\/blockquote>\n

\"oracle\u600e\u4e48\u66ff\u6362\u5b57\u7b26\u4e32\u63d2\u56fe\"<\/p>\n

Oracle \u4e2d\u66ff\u6362\u5b57\u7b26\u4e32<\/strong><\/p>\n

\u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u66ff\u6362\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528 REPLACE \u51fd\u6570\u3002\u8be5\u51fd\u6570\u6709\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

REPLACE(string, search_string, replacement_string)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  •  string<\/strong>\uff1a\u8981\u66ff\u6362\u7684\u539f\u59cb\u5b57\u7b26\u4e32\u3002<\/li>\n
  •  search_string<\/strong>\uff1a\u8981\u67e5\u627e\u7684\u5b57\u7b26\u4e32\u3002<\/li>\n
  •  replacement_string<\/strong>\uff1a\u8981\u66ff\u6362\u7684\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n
    \u8be5\u51fd\u6570\u5c06\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709 search_string<\/strong> \u5b9e\u4f8b\u66ff\u6362\u4e3a replacement_string<\/strong>\u3002<\/p>\n
    \u793a\u4f8b<\/strong><\/p>\n
    \u66ff\u6362\u5b57\u7b26\u4e32 “World” \u4e3a “Universe”\uff1a<\/p>\n
    SELECT REPLACE('Hello World', 'World', 'Universe') FROM dual;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/p>\n
    Hello Universe<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u9ad8\u7ea7\u9009\u9879<\/strong><\/p>\n
    REPLACE \u51fd\u6570\u8fd8\u63d0\u4f9b\u4ee5\u4e0b\u9ad8\u7ea7\u9009\u9879\uff1a<\/p>\n
      \n
    •  n \u6b21\u66ff\u6362\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528 REPLACE( , , , n) \u6765\u6307\u5b9a\u66ff\u6362\u7684\u6b21\u6570\u3002n \u4e3a\u8981\u8fdb\u884c\u66ff\u6362\u7684\u6b21\u6570\uff0c\u9ed8\u8ba4\u4e3a 1\u3002 <\/li>\n
    •  \u533a\u5206\u5927\u5c0f\u5199\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528 REPLACE( , , , 1, 1\uff09\u6765\u8fdb\u884c\u533a\u5206\u5927\u5c0f\u5199\u7684\u66ff\u6362\u3002 <\/li>\n<\/ul>\n
      \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n
        \n
      • \u5982\u679c search_string<\/strong> \u4e3a\u7a7a\u5b57\u7b26\u4e32\uff0c\u5219\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u90fd\u5c06\u88ab\u66ff\u6362\u4e3a replacement_string<\/strong>\u3002<\/li>\n
      • \u5982\u679c replacement_string<\/strong> \u4e3a\u7a7a\u5b57\u7b26\u4e32\uff0c\u5219\u5c06\u4ece\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u5220\u9664\u6240\u6709 search_string<\/strong> \u5b9e\u4f8b\u3002<\/li>\n
      • \u5982\u679c search_string<\/strong> \u5728\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u4e0d\u5b58\u5728\uff0c\u5219\u51fd\u6570\u5c06\u8fd4\u56de\u539f\u59cb\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u66ff\u6362\u5b57\u7b26\u4e32\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":"
        oracle \u4e2d\u66ff\u6362\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528 replace \u51fd\u6570\uff0c\u8bed\u6cd5\u4e3a replace(string, search_string, replacement_string)\uff0c\u53ef\u7528\u4e8e\u66ff\u6362\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u6307\u5b9a\u5b57\u7b26\u4e32\uff0c\u8fd8\u652f\u6301 n \u6b21\u66ff\u6362\u548c\u533a\u5206\u5927\u5c0f\u5199\u66ff\u6362\u7b49\u9ad8\u7ea7\u9009\u9879\u3002 Oracle \u4e2d\u66ff\u6362\u5b57\u7b26\u4e32 \u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u66ff\u6362\u5b57\u7b26\u4e32\u53ef\u4ee5\u4f7f\u7528 REPLACE \u51fd\u6570\u3002\u8be5\u51fd\u6570\u6709\u4ee5\u4e0b\u8bed\u6cd5\uff1a REPLACE(string, search_string, replacement_string) \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a string\uff1a\u8981\u66ff\u6362\u7684\u539f\u59cb\u5b57\u7b26\u4e32\u3002 search_string\uff1a\u8981\u67e5\u627e\u7684\u5b57\u7b26\u4e32\u3002 replacement_string\uff1a\u8981\u66ff\u6362\u7684\u5b57\u7b26\u4e32\u3002 \u8be5\u51fd\u6570\u5c06\u539f\u59cb\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709 search_string \u5b9e\u4f8b\u66ff\u6362\u4e3a replacement_string\u3002 \u793a\u4f8b \u66ff\u6362\u5b57\u7b26\u4e32 “World” \u4e3a “Universe”\uff1a SELECT REPLACE(‘Hello World’, ‘World’, ‘Universe’) FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\uff1a Hello Universe \u767b\u5f55\u540e\u590d\u5236 \u9ad8\u7ea7\u9009\u9879 REPLACE \u51fd\u6570\u8fd8\u63d0\u4f9b\u4ee5\u4e0b\u9ad8\u7ea7\u9009\u9879\uff1a n \u6b21\u66ff\u6362\uff1a\u53ef\u4ee5\u4f7f\u7528 REPLACE( , , , n) […]<\/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-5310","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5310","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=5310"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5310\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}