{"id":200991,"date":"2025-05-06T08:42:01","date_gmt":"2025-05-06T00:42:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200991\/"},"modified":"2025-05-06T08:42:01","modified_gmt":"2025-05-06T00:42:01","slug":"mysql-%e5%ad%98%e5%82%a8%e8%bf%87%e7%a8%8b%e4%b8%ad%e5%a4%a7%e5%ad%97%e6%ae%b5%e4%bf%a1%e6%81%af%e4%b8%8d%e5%ad%98%e5%9c%a8%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200991\/","title":{"rendered":"MySQL \u5b58\u50a8\u8fc7\u7a0b\u4e2d\u201c\u5927\u5b57\u6bb5\u4fe1\u606f\u4e0d\u5b58\u5728\u201d\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"

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

MySQL \u5b58\u50a8\u8fc7\u7a0b\u4e2d\u201c\u5927\u5b57\u6bb5\u4fe1\u606f\u4e0d\u5b58\u5728\u201d\u5982\u4f55\u89e3\u51b3\uff1f<\/h1>\n

\u6765\u5230\u4e3b\u673a\u5b9d\u8d1d\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6570\u636e\u5e93\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aMySQL \u5b58\u50a8\u8fc7\u7a0b\u4e2d\u201c\u5927\u5b57\u6bb5\u4fe1\u606f\u4e0d\u5b58\u5728\u201d\u5982\u4f55\u89e3\u51b3\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

<\/p>\n

mysql \u5b58\u50a8\u8fc7\u7a0b\u4e2d\u7684\u201c\u5927\u5b57\u6bb5\u4fe1\u606f\u4e0d\u5b58\u5728\u201d\u9519\u8bef\uff1a\u89e3\u51b3\u65b9\u6cd5<\/strong><\/p>\n

\u5728\u6267\u884c mysql \u5b58\u50a8\u8fc7\u7a0b\u65f6\uff0c\u4f60\u9047\u5230\u4e86\u4e00\u4e2a \u201c\u5927\u5b57\u6bb5\u4fe1\u606f\u4e0d\u5b58\u5728\u201d \u7684\u9519\u8bef\u3002\u8be5\u9519\u8bef\u8868\u660e\u5b58\u50a8\u8fc7\u7a0b\u6b63\u5728\u5c1d\u8bd5\u8bbf\u95ee\u4e0d\u5b58\u5728\u7684\u5b57\u6bb5\u3002<\/p>\n

\u5177\u4f53\u5206\u6790\uff1a<\/strong><\/p>\n

\u4f60\u7684\u5b58\u50a8\u8fc7\u7a0b\u65e8\u5728\u63d0\u53d6 eb_store_product \u8868\u4e2d slider_image \u5b57\u6bb5\u4e2d\u7684 json \u6570\u7ec4\u503c\uff0c\u5e76\u66ff\u6362\u5176\u4e2d\u7684\u90e8\u5206\u5185\u5bb9\u3002\u4f46\u662f\uff0c\u4f60\u6ca1\u6709\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u66f4\u65b0 slider_image \u5b57\u6bb5\u503c\uff0c\u56e0\u6b64\u51fa\u73b0\u4e86\u8be5\u9519\u8bef\u3002<\/p>\n

\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n

\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f60\u9700\u8981\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u6dfb\u52a0\u66f4\u65b0 eb_store_product \u8868\u4e2d slider_image \u5b57\u6bb5\u7684\u8bed\u53e5\u3002\u4e0b\u9762\u662f\u5982\u4f55\u4fee\u6539\u4f60\u7684\u5b58\u50a8\u8fc7\u7a0b\uff1a<\/p>\n

delimiter \/\/\ndrop procedure if exists `replacename`\/\/\ncreate procedure replacename()\nbegin\n    declare c int default 0;\n    declare r json;\n    declare id int default 0;\n    declare i int default 0;\n\n    declare result cursor for select id, slider_image from `eb_store_product`;\n\n    select count(*) into c from eb_store_product;\n    open result;\n\n    repeat\n        set i = i + 1;\n        fetch result into id, r;\n\n        set @t = replace(json_extract(r, '$[0]'), 'ceshi', 'chenggong');\n\n        -- \u66f4\u65b0 eb_store_product \u8868\u4e2d\u7684 slider_image \u5b57\u6bb5\n        update eb_store_product set slider_image = json_replace(r, '$[0]', @t) where id = id;\n\n    until i &gt;= c\n    end repeat;\n\n    close result;\n    select @t;\nend\/\/\ndelimiter ;\n\ncall replacename();<\/pre>\n
\u5728\u8fd9\u4e2a\u4fee\u6539\u540e\u7684\u5b58\u50a8\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86\u4ee5\u4e0b\u66f4\u65b0\u8bed\u53e5\uff1a<\/p>\n
UPDATE eb_store_product SET slider_image = JSON_REPLACE(r, '$[0]', @t) WHERE id = id;<\/pre>\n
\u8be5\u8bed\u53e5\u5c06\u4f7f\u7528 json_replace() \u51fd\u6570\u5c06 r \u4e2d\u7b2c\u4e00\u4e2a\u5143\u7d20\u66ff\u6362\u4e3a @t\uff0c\u5e76\u5c06\u7ed3\u679c\u66f4\u65b0\u5230 eb_store_product \u8868\u7684 slider_image \u5b57\u6bb5\u4e2d\u3002<\/p>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aMySQL \u5b58\u50a8\u8fc7\u7a0b\u4e2d\u201c\u5927\u5b57\u6bb5\u4fe1\u606f\u4e0d\u5b58\u5728\u201d\u5982\u4f55\u89e3\u51b3\uff1f\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\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u5427\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
MySQL \u5b58\u50a8\u8fc7\u7a0b\u4e2d\u201c\u5927\u5b57\u6bb5\u4fe1...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200991","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200991"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200991\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}