{"id":6067,"date":"2024-11-14T10:08:14","date_gmt":"2024-11-14T02:08:14","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6067\/"},"modified":"2024-11-14T10:08:14","modified_gmt":"2024-11-14T02:08:14","slug":"oracle%e5%a6%82%e4%bd%95%e6%9b%bf%e6%8d%a2%e5%ad%97%e6%ae%b5%e4%b8%ad%e6%8c%87%e5%ae%9a%e7%9a%84%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6067\/","title":{"rendered":"oracle\u5982\u4f55\u66ff\u6362\u5b57\u6bb5\u4e2d\u6307\u5b9a\u7684\u5b57\u7b26"},"content":{"rendered":"

\n oracle \u7684 replace() \u51fd\u6570\u53ef\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u66ff\u6362\u6307\u5b9a\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u3002\u66ff\u6362\u8fc7\u7a0b\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a1. \u6807\u8bc6\u8981\u66ff\u6362\u7684\u5b57\u7b26\uff1b2. \u6307\u5b9a\u8868\u548c\u5b57\u6bb5\uff1b3. \u4f7f\u7528 replace() \u51fd\u6570\u6784\u9020\u66ff\u6362\u8868\u8fbe\u5f0f\uff1b4. \u6dfb\u52a0 where \u5b50\u53e5\uff08\u53ef\u9009\uff09\uff1b5. \u8fd0\u884c update \u8bed\u53e5\u3002\n<\/p><\/blockquote>\n

\"oracle\u5982\u4f55\u66ff\u6362\u5b57\u6bb5\u4e2d\u6307\u5b9a\u7684\u5b57\u7b26\u63d2\u56fe\"<\/p>\n

\u4f7f\u7528Oracle REPLACE() \u51fd\u6570\u66ff\u6362\u5b57\u6bb5\u4e2d\u7684\u6307\u5b9a\u5b57\u7b26<\/strong><\/p>\n

Oracle \u63d0\u4f9b\u4e86 REPLACE() \u51fd\u6570\uff0c\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u67e5\u627e\u5e76\u66ff\u6362\u6307\u5b9a\u7684\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6b64\u51fd\u6570\u6309\u4ee5\u4e0b\u6b65\u9aa4\u66ff\u6362\u8868\u4e2d\u5b57\u6bb5\u4e2d\u7684\u6307\u5b9a\u5b57\u7b26\uff1a<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

UPDATE table_name\nSET column_name = REPLACE(column_name, 'old_string', 'new_string')\nWHERE ...;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b65\u9aa4\uff1a<\/strong><\/p>\n
    \n
  1.  \u6807\u8bc6\u8981\u66ff\u6362\u7684\u5b57\u7b26\uff1a<\/strong>\u786e\u5b9a\u8981\u66ff\u6362\u7684\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u8981\u66ff\u6362 “A” \u4e3a “B”\u3002<\/li>\n
  2.  \u6307\u5b9a\u8868\u548c\u5b57\u6bb5\uff1a<\/strong>\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u8868\u548c\u5b57\u6bb5\u3002\u4f8b\u5982\uff0cUPDATE my_table SET my_column = …<\/li>\n
  3.  \u6784\u9020\u66ff\u6362\u8868\u8fbe\u5f0f\uff1a<\/strong>\u4f7f\u7528 REPLACE() \u51fd\u6570\u6784\u9020\u4e00\u4e2a\u8868\u8fbe\u5f0f\u6765\u5b9e\u73b0\u66ff\u6362\u3002\u4f8b\u5982\uff0cREPLACE(my_column, ‘A’, ‘B’)<\/li>\n
  4.  \u6dfb\u52a0 WHERE \u5b50\u53e5\uff1a<\/strong>\uff08\u53ef\u9009\uff09\u5982\u679c\u8981\u6839\u636e\u67d0\u4e9b\u6761\u4ef6\u9650\u5236\u66ff\u6362\uff0c\u8bf7\u6dfb\u52a0 WHERE \u5b50\u53e5\u3002\u4f8b\u5982\uff0cWHERE my_column LIKE ‘%A%’<\/li>\n<\/ol>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    \u8981\u5c06\u8868 “my_table” \u4e2d “my_column” \u5b57\u6bb5\u4e2d\u7684\u6240\u6709 “A” \u5b57\u7b26\u66ff\u6362\u4e3a “B”\uff0c\u53ef\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n
    UPDATE my_table\nSET my_column = REPLACE(my_column, 'A', 'B');<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u5176\u4ed6\u6280\u5de7\uff1a<\/strong><\/p>\n
      \n
    • \u4f7f\u7528 % \u5339\u914d\u4efb\u610f\u6570\u91cf\u7684\u5b57\u7b26\u3002\u4f8b\u5982\uff0cREPLACE(my_column, ‘A%’, ‘B’) \u5c06\u66ff\u6362\u4ee5 “A” \u5f00\u5934\u7684\u6240\u6709\u5b57\u7b26\u3002<\/li>\n
    • \u4f7f\u7528 ^ \u5339\u914d\u5b57\u7b26\u4e32\u5f00\u5934\u3002\u4f8b\u5982\uff0cREPLACE(my_column, ‘^A’, ‘B’) \u5c06\u4ec5\u66ff\u6362\u4ee5 “A” \u5f00\u5934\u7684\u5b57\u7b26\u3002<\/li>\n
    • \u4f7f\u7528 $ \u5339\u914d\u5b57\u7b26\u4e32\u7ed3\u5c3e\u3002\u4f8b\u5982\uff0cREPLACE(my_column, ‘A$’, ‘B’) \u5c06\u4ec5\u66ff\u6362\u4ee5 “A” \u7ed3\u5c3e\u7684\u5b57\u7b26\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u66ff\u6362\u5b57\u6bb5\u4e2d\u6307\u5b9a\u7684\u5b57\u7b26\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 \u7684 replace() \u51fd\u6570\u53ef\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u66ff\u6362\u6307\u5b9a\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u3002\u66ff\u6362\u8fc7\u7a0b\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a1. \u6807\u8bc6\u8981\u66ff\u6362\u7684\u5b57\u7b26\uff1b2. \u6307\u5b9a\u8868\u548c\u5b57\u6bb5\uff1b3. \u4f7f\u7528 replace() \u51fd\u6570\u6784\u9020\u66ff\u6362\u8868\u8fbe\u5f0f\uff1b4. \u6dfb\u52a0 where \u5b50\u53e5\uff08\u53ef\u9009\uff09\uff1b5. \u8fd0\u884c update \u8bed\u53e5\u3002 \u4f7f\u7528Oracle REPLACE() \u51fd\u6570\u66ff\u6362\u5b57\u6bb5\u4e2d\u7684\u6307\u5b9a\u5b57\u7b26 Oracle \u63d0\u4f9b\u4e86 REPLACE() \u51fd\u6570\uff0c\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u67e5\u627e\u5e76\u66ff\u6362\u6307\u5b9a\u7684\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6b64\u51fd\u6570\u6309\u4ee5\u4e0b\u6b65\u9aa4\u66ff\u6362\u8868\u4e2d\u5b57\u6bb5\u4e2d\u7684\u6307\u5b9a\u5b57\u7b26\uff1a \u8bed\u6cd5\uff1a UPDATE table_name SET column_name = REPLACE(column_name, ‘old_string’, ‘new_string’) WHERE …; \u767b\u5f55\u540e\u590d\u5236 \u6b65\u9aa4\uff1a \u6807\u8bc6\u8981\u66ff\u6362\u7684\u5b57\u7b26\uff1a\u786e\u5b9a\u8981\u66ff\u6362\u7684\u5b57\u7b26\u6216\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u8981\u66ff\u6362 “A” \u4e3a “B”\u3002 \u6307\u5b9a\u8868\u548c\u5b57\u6bb5\uff1a\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u8868\u548c\u5b57\u6bb5\u3002\u4f8b\u5982\uff0cUPDATE my_table SET my_column = … \u6784\u9020\u66ff\u6362\u8868\u8fbe\u5f0f\uff1a\u4f7f\u7528 REPLACE() \u51fd\u6570\u6784\u9020\u4e00\u4e2a\u8868\u8fbe\u5f0f\u6765\u5b9e\u73b0\u66ff\u6362\u3002\u4f8b\u5982\uff0cREPLACE(my_column, ‘A’, ‘B’) \u6dfb\u52a0 WHERE \u5b50\u53e5\uff1a\uff08\u53ef\u9009\uff09\u5982\u679c\u8981\u6839\u636e\u67d0\u4e9b\u6761\u4ef6\u9650\u5236\u66ff\u6362\uff0c\u8bf7\u6dfb\u52a0 WHERE \u5b50\u53e5\u3002\u4f8b\u5982\uff0cWHERE […]<\/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-6067","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6067","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=6067"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6067\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}