{"id":175485,"date":"2024-11-08T06:16:17","date_gmt":"2024-11-07T22:16:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175485\/"},"modified":"2024-11-08T06:16:18","modified_gmt":"2024-11-07T22:16:18","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%absplit%e5%87%bd%e6%95%b8%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%absplit%e5%87%bd%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175485\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eabsplit\u51fd\u6578\uff1f (\u6578\u64da\u5eabsplit\u51fd\u6578)"},"content":{"rendered":"

\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eabsplit\u51fd\u6578\uff1f<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u7684\u8655\u7406\u548c\u5206\u6790\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u7576\u6211\u5011\u9700\u8981\u5c07\u4e00\u500b\u5b57\u7b26\u4e32\u5206\u5272\u6210\u591a\u500b\u90e8\u5206\u6642\uff0c\u6578\u64da\u5eab\u7684split\u51fd\u6578\u4fbf\u6210\u70ba\u4e86\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u7684split\u51fd\u6578\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u969b\u7684\u793a\u4f8b\u4f86\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5176\u7528\u6cd5\u3002<\/p>\n

\u4ec0\u9ebc\u662fsplit\u51fd\u6578\uff1f<\/h2>\n

split\u51fd\u6578\u662f\u4e00\u7a2e\u7528\u65bc\u5c07\u5b57\u7b26\u4e32\u6839\u64da\u6307\u5b9a\u7684\u5206\u9694\u7b26\u9032\u884c\u5206\u5272\u7684\u51fd\u6578\u3002\u9019\u500b\u51fd\u6578\u901a\u5e38\u8fd4\u56de\u4e00\u500b\u6578\u7d44\u6216\u5217\u8868\uff0c\u5305\u542b\u4e86\u5206\u5272\u5f8c\u7684\u5404\u500b\u90e8\u5206\u3002\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5c0dsplit\u51fd\u6578\u7684\u5be6\u73fe\u53ef\u80fd\u6709\u6240\u4e0d\u540c\uff0c\u4f46\u5176\u57fa\u672c\u539f\u7406\u662f\u4e00\u81f4\u7684\u3002<\/p>\n

\u4e0d\u540c\u6578\u64da\u5eab\u4e2d\u7684split\u51fd\u6578<\/h2>\n

1. MySQL\u4e2d\u7684split\u51fd\u6578<\/h3>\n

\u5728MySQL\u4e2d\uff0c\u4e26\u6c92\u6709\u5167\u5efa\u7684split\u51fd\u6578\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u51fd\u6578\u4f86\u9054\u5230\u985e\u4f3c\u7684\u6548\u679c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528SUBSTRING_INDEX\u51fd\u6578\u4f86\u5206\u5272\u5b57\u7b26\u4e32\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n

SELECT SUBSTRING_INDEX('apple,banana,cherry', ',', 1) AS first_fruit;\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de’apple’\uff0c\u56e0\u70ba\u5b83\u662f\u4ee5\u9017\u865f\u70ba\u5206\u9694\u7b26\u7684\u7b2c\u4e00\u90e8\u5206\u3002<\/p>\n
2. PostgreSQL\u4e2d\u7684split_part\u51fd\u6578<\/h3>\n
\u5728PostgreSQL\u4e2d\uff0csplit_part\u51fd\u6578\u53ef\u4ee5\u76f4\u63a5\u7528\u4f86\u5206\u5272\u5b57\u7b26\u4e32\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
SPLIT_PART(string, delimiter, position)\n<\/code><\/pre>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n
SELECT SPLIT_PART('apple,banana,cherry', ',', 2) AS second_fruit;\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de’banana’\uff0c\u56e0\u70ba\u5b83\u662f\u4ee5\u9017\u865f\u70ba\u5206\u9694\u7b26\u7684\u7b2c\u4e8c\u90e8\u5206\u3002<\/p>\n
3. SQL Server\u4e2d\u7684STRING_SPLIT\u51fd\u6578<\/h3>\n
\u5728SQL Server\u4e2d\uff0cSTRING_SPLIT\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u5c07\u5b57\u7b26\u4e32\u5206\u5272\u6210\u591a\u500b\u90e8\u5206\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
SELECT value FROM STRING_SPLIT('apple,banana,cherry', ',');\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u4e00\u500b\u5305\u542b’apple’\u3001’banana’\u548c’cherry’\u7684\u7d50\u679c\u96c6\u3002<\/p>\n
\u4f7f\u7528split\u51fd\u6578\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n
split\u51fd\u6578\u5728\u6578\u64da\u8655\u7406\u4e2d\u6709\u8457\u5ee3\u6cdb\u7684\u61c9\u7528\u3002\u4f8b\u5982\uff0c\u5728\u6578\u64da\u6e05\u7406\u904e\u7a0b\u4e2d\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u5c07\u4e00\u500b\u5305\u542b\u591a\u500b\u503c\u7684\u5b57\u7b26\u4e32\u5206\u5272\u6210\u7368\u7acb\u7684\u503c\uff0c\u4ee5\u4fbf\u9032\u884c\u9032\u4e00\u6b65\u7684\u5206\u6790\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5be6\u969b\u7684\u61c9\u7528\u793a\u4f8b\uff1a<\/p>\n
-- \u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5305\u542b\u7528\u6236\u8208\u8da3\u7684\u5b57\u7b26\u4e32\nDECLARE @interests NVARCHAR(MAX) = '\u97f3\u6a02,\u904b\u52d5,\u65c5\u884c';\n\n-- \u4f7f\u7528STRING_SPLIT\u5c07\u5176\u5206\u5272\nSELECT value FROM STRING_SPLIT(@interests, ',');\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u4e09\u500b\u7368\u7acb\u7684\u8208\u8da3\uff1a\u97f3\u6a02\u3001\u904b\u52d5\u548c\u65c5\u884c\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u6578\u64da\u5eab\u4e2d\u7684split\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u8655\u7406\u548c\u5206\u6790\u5b57\u7b26\u4e32\u6578\u64da\u3002\u7121\u8ad6\u662f\u5728MySQL\u3001PostgreSQL\u9084\u662fSQL Server\u4e2d\uff0c\u9019\u4e9b\u51fd\u6578\u90fd\u80fd\u5920\u63d0\u4f9b\u9748\u6d3b\u7684\u5b57\u7b26\u4e32\u5206\u5272\u529f\u80fd\uff0c\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u4e86\u89e3\u5982\u4f55\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u4f7f\u7528split\u51fd\u6578\uff0c\u5c07\u5b57\u7b26\u4e32\u5206\u5272\u70ba\u6578\u7d44\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u548c\u9748\u6d3b\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-175485","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175485","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=175485"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175485\/revisions"}],"predecessor-version":[{"id":175486,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175485\/revisions\/175486"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}