{"id":352,"date":"2023-09-16T10:44:53","date_gmt":"2023-09-16T02:44:53","guid":{"rendered":""},"modified":"2023-09-18T11:50:02","modified_gmt":"2023-09-18T03:50:02","slug":"sql%e8%af%ad%e5%8f%a5%ef%bc%9a%e5%a6%82%e4%bd%95%e6%88%aa%e5%8f%96%e6%8c%87%e5%ae%9a%e5%ad%97%e6%ae%b5%e6%9f%90%e4%b8%80%e4%b8%aa%e5%ad%97%e7%ac%a6%e7%9a%84%e5%89%8d%e9%9d%a2-%e5%90%8e%e9%9d%a2","status":"publish","type":"post","link":"https:\/\/mushiming.com\/352.html","title":{"rendered":"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f"},"content":{"rendered":"<p>\u5047\u8bbe\u6570\u636e\u5e93\u4e2d\uff0c\u67d0\u4e00\u5217\u6570\u636e\u50cf\u8fd9\u6837\uff0c\u6bcf\u4e2a\u6570\u636e\u90fd\u6709\u540c\u4e00\u4e2a\u5b57\u7b26\u201c-\u201d\uff0c\u8fd9\u65f6\u5982\u679c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u8fd9\u4e2a\u5b57\u7b26\u7684\u524d\u9762\u7684\u5b57\u7b26\u4e32\u6216\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff0c\u5e94\u8be5\u7528\u4ec0\u4e48SQL\u8bed\u53e5\u5462\uff1f<\/p>\n<pre><code class=\"language-sql\">SUBSTRING ( expression, start, length )               --SUBSTRING('\u5217\u540d',\u8d77\u59cb\u4f4d\u6570,\u8981\u53d6\u7684\u5b57\u7b26\u4e32\u957f\u5ea6)<\/code><\/pre>\n<p class=\"img-center\"><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/79db82d5b49d497a83d6b87d3862b49b.png\" =\"\" =\"\" alt=\"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c1\u5f20\" title=\"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f \u6280\u672f\u535a\u5ba2 \u7b2c1\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<p>1.\u83b7\u53d6\u201c-\u201d\u524d\u9762\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre><code class=\"language-sql\">SUBSTRING(FBILLNO, 1 , &nbsp;CHARINDEX('-',FBILLNO)-1)  from a\n\n\u5217\u540d&nbsp;&nbsp; \uff0c\u4ece\u7b2c\u4e00\u4f4d\u53d6\u503c&nbsp;\uff0c\u8981\u53d6\u7684\u5b57\u7b26\u4e32\u957f\u5ea6\u662f\u201c-\u201d\u5b57\u7b26\u5728\u5b57\u6bb5\u4e2d\u7684\u4f4d\u7f6e\u51cf1<\/code><\/pre>\n<p class=\"img-center\"><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/c418e66015a14eeead3d851571e8cefe.png\" =\"\" =\"\" alt=\"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c2\u5f20\" title=\"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f \u6280\u672f\u535a\u5ba2 \u7b2c2\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<\/p>\n<p>2.\u83b7\u53d6\u201c-\u201d\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre><code class=\"language-sql\">SUBSTRING(FBILLNO ,CHARINDEX('-',FBILLNO)+1 ,len(FBILLNO)-charindex('-',FBILLNO))\n\n\u5217\u540d\uff0c\u4ece\u201c-\u201d\u5b57\u7b26\u540e\u4e00\u4f4d\u5f00\u59cb \uff0c\u8981\u53d6\u7684\u5b57\u7b26\u4e32\u957f\u5ea6\u662f\u5b57\u6bb5\u603b\u957f\u5ea6\u51cf\u53bb\u201c-\u201d\u5b57\u7b26\u6240\u5728\u4f4d\u7f6e<\/code><\/pre>\n<p class=\"img-center\"><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/common_img\/c234d6e4e3cb4a2a8a98ddfc96938d70.png\" =\"\" =\"\" alt=\"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f (https:\/\/mushiming.com\/) \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20\" title=\"SQL\u8bed\u53e5\uff1a\u5982\u4f55\u622a\u53d6\u6307\u5b9a\u5b57\u6bb5\u67d0\u4e00\u4e2a\u5b57\u7b26\u7684\u524d\u9762\/\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff1f \u6280\u672f\u535a\u5ba2 \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<\/p>\n<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"\u5047\u8bbe\u6570\u636e\u5e93\u4e2d\uff0c\u67d0\u4e00\u5217\u6570\u636e\u50cf\u8fd9\u6837\uff0c\u6bcf\u4e2a\u6570\u636e\u90fd\u6709\u540c\u4e00\u4e2a\u5b57\u7b26\u201c-\u201d\uff0c\u8fd9\u65f6\u5982\u679c\u6211\u4eec\u9700\u8981\u83b7\u53d6\u8fd9\u4e2a\u5b57\u7b26\u7684\u524d\u9762\u7684\u5b57\u7b26\u4e32\u6216\u540e\u9762\u7684\u5b57\u7b26\u4e32\uff0c...","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\/352"}],"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=352"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/352\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}