{"id":353,"date":"2023-09-16T10:44:53","date_gmt":"2023-09-16T02:44:53","guid":{"rendered":""},"modified":"2023-09-16T15:50:11","modified_gmt":"2023-09-16T07:50:11","slug":"sql%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%88%aa%e5%8f%96","status":"publish","type":"post","link":"https:\/\/mushiming.com\/353.html","title":{"rendered":"sql\u5b57\u7b26\u4e32\u622a\u53d6"},"content":{"rendered":"<p>\u4f7f\u7528SUBSTR\u5b9e\u73b0\u5b57\u7b26\u4e32\u622a\u53d6\uff1a<\/p>\n<pre class=\"has\"><code>SUBSTR(string, Nstart, Nend) AS stringnew<\/code><\/pre>\n<p>\u6bd4\u5982\uff1a<\/p>\n<p>\uff081\uff09\u622a\u53d6\u5b57\u7b26\u4e32\u524d10\u4f4d<\/p>\n<p>string = '20190604080910'<\/p>\n<p>Nbegin = 1<\/p>\n<p>Nend = 10<\/p>\n<p>SUBSTR(string, Nbegin, Nend) AS stringnew<\/p>\n<p>\u5219\uff1a<\/p>\n<p>stringnew = '2019060408'<\/p>\n<p>&nbsp;<\/p>\n<p>\uff082\uff09\u622a\u53d6\u5b57\u7b26\u4e32\u540e6\u4f4d<\/p>\n<p>string = '20190604080910'<\/p>\n<p>Nbegin = 9<\/p>\n<p>Nend = 14<\/p>\n<p>SUBSTR(string, Nbegin, Nend) AS stringnew<\/p>\n<p>\u5219\uff1a<\/p>\n<p>stringnew = '080910'<\/p>\n","protected":false},"excerpt":{"rendered":"\u4f7f\u7528SUBSTR\u5b9e\u73b0\u5b57\u7b26\u4e32\u622a\u53d6\uff1aSUBSTR(string,Nstart,Nend)ASstringnew\u6bd4\u5982\uff1a\uff081\uff09\u622a\u53d6\u5b57\u7b26\u4e32\u524d10\u4f4dstring='20190604080910'Nbeg...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/353"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=353"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/353\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}