{"id":2013,"date":"2015-08-11T17:26:13","date_gmt":"2015-08-11T09:26:13","guid":{"rendered":"http:\/\/www.menglanglang.cn\/?p=2013"},"modified":"2022-11-16T09:41:06","modified_gmt":"2022-11-16T01:41:06","slug":"mysql%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%9a%84%e6%88%aa%e5%8f%96%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"http:\/\/www.menglanglang.cn\/?p=2013","title":{"rendered":"MySQL\u5b57\u7b26\u4e32\u7684\u622a\u53d6\u51fd\u6570"},"content":{"rendered":"

\u5728 MySQL \u4e2d\uff0c\u5982\u4f55\u628a\u67d0\u5b57\u6bb5\u4e2d\u7684\u5b57\u7b26\u4e32\u622a\u53d6\uff0c\u83b7\u53d6\u81ea\u5df1\u9700\u8981\u7684\u90a3\u4e00\u6bb5\u5b57\u4e32\u5462\uff1f<\/p>\n

\u6bd4\u5982\uff0c\u6211\u8fd9\u91cc\u6709\u4e2a\u5b57\u7b26\u4e32\uff1a<\/p>\n

\n
    \n
  1. 1\/2015#HEBEI\u00a0QINHUANGDAO#1507#VRHC9#100#LADEN\u00a02\/ABI#ABASHIRI#JAPAN\u00a03\/2015-07-01\u00a016:38#2015-07-08\u00a016:38\/LOAD\u00a04\/1.0#2.0#3.0###0.0#\u00a05\/1#2#S#3#4#W\u00a06\/S\/5\u00a07\/11.00#22.00#33.00\u00a08\/\/######\u00a09\/ETB\/POSITION#11#22#S#33#44#W\/REVERTING\u00a010\/1\/2.0\/3.0\/4.0\u00a011\/5.0\/6.0\/7.0\/8.0\/9.0\/10.0\/11.0\u00a012\/\/\u00a013\/<\/li>\n<\/ol>\n<\/div>\n

    \u5982\u4f55\u4ece\u4e2d\u622a\u53d6\u201c \/3\u201d\u5230\u201c \/4\u201d\u4e4b\u95f4\u7684\u5b57\u7b26\u4e32\u5462\uff1f<\/p>\n

    \u67e5\u4e86\u4e00\u4e0b\uff0cMySQL\u63d0\u4f9b\u4e86\u4e00\u4e0b\u51e0\u4e2a\u5b57\u7b26\u4e32\u622a\u53d6\u51fd\u6570\u3002<\/p>\n

    1.\u4ece\u5de6\u5f00\u59cb\u622a\u53d6\u5b57\u7b26\u4e32\u3002<\/p>\n

    left\uff08str, length\uff09
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    2.\u4ece\u53f3\u5f00\u59cb\u622a\u53d6\u5b57\u7b26\u4e32\u3002<\/p>\n

    right\uff08str, length\uff09
    \n\u8bf4\u660e\uff1aright\uff08\u88ab\u622a\u53d6\u5b57\u6bb5\uff0c\u622a\u53d6\u957f\u5ea6\uff09<\/p>\n

    3.\u4ece\u6307\u5b9a\u4f4d\u7f6e\u622a\u53d6\u5b57\u7b26\u4e32\uff0c\u6216\u8005\u622a\u53d6\u6307\u5b9a\u957f\u5ea6\u5b57\u7b26\u4e32\u3002<\/p>\n

    substring\uff08str, pos\uff09
    \nsubstring\uff08str, pos, length\uff09
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    4.\u6309\u5173\u952e\u5b57\u622a\u53d6\u5b57\u7b26\u4e32\u3002<\/p>\n

    substring_index\uff08str,delim,count\uff09
    \n\u8bf4\u660e\uff1asubstring_index\uff08\u88ab\u622a\u53d6\u5b57\u6bb5\uff0c\u5173\u952e\u5b57\uff0c\u5173\u952e\u5b57\u51fa\u73b0\u7684\u6b21\u6570\uff09
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    \n
      \n
    1. SUBSTRING_INDEX(SUBSTRING_INDEX(str,\u00a0'\u00a04\/',\u00a01),'\u00a03\/',-1)\u00a0AS<\/span>\u00a0str<\/li>\n<\/ol>\n<\/div>\n

      \u622a\u53d6\u7ed3\u679c\u4e3a\uff1a2015-07-01 16:38#2015-07-08 16:38\/LOAD<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u5728 MySQL \u4e2d\uff0c\u5982\u4f55\u628a\u67d0\u5b57\u6bb5\u4e2d\u7684\u5b57\u7b26\u4e32\u622a\u53d6\uff0c\u83b7\u53d6\u81ea\u5df1\u9700\u8981\u7684\u90a3\u4e00\u6bb5\u5b57\u4e32\u5462\uff1f \u6bd4\u5982\uff0c\u6211\u8fd9\u91cc\u6709\u4e2a\u5b57\u7b26\u4e32\uff1a 1\/2 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[800],"tags":[186,454,452,453],"class_list":["post-2013","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-mysql","tag-454","tag-452","tag-453"],"_links":{"self":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts\/2013","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2013"}],"version-history":[{"count":2,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts\/2013\/revisions"}],"predecessor-version":[{"id":5259,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=\/wp\/v2\/posts\/2013\/revisions\/5259"}],"wp:attachment":[{"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2013"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.menglanglang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}