SQL\u8bed\u8a00\u4f8b\u5b50\u6c47\u603b<\/p>\n
CREATE DATABASE \u5b66\u751f\u6863\u6848<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201c\u5b66\u751f\u6863\u6848\u201d\u7684\u6570\u636e\u5e93<\/p>\n
\u00a0 CREATE TABLE \u5b66\u751f\u6210\u7ee9\uff08\u59d3\u540d VARCHAR,\u8bed\u6587 REAL\uff0c\u6570\u5b66 REAL,\u82f1\u8bedREAL\uff09<\/p>\n
\u521b\u5efa\u4e00\u5f20\u540d\u4e3a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u7684\u6570\u636e\u8868\uff0cVARCHAR,REAL\u4e3a\u5b57\u6bb5\u7c7b\u578b \u00a0<\/p>\n
SELECT \u59d3\u540d\uff0c\u8bed\u6587 FROM \u5b66\u751f\u6210\u7ee9 \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u6240\u6709\u8bb0\u5f55\u7684\u59d3\u540d\u548c\u8bed\u6587\u4fe1\u606f<\/p>\n
\u00a0 SELECT \u59d3\u540d\uff0c\u8bed\u6587\uff0c\u6570\u5b66\uff0c\u82f1\u8bed\uff0c\u8bed\u6587+\u6570\u5b66+\u82f1\u8bed AS \u603b\u5206 FROM \u5b66\u751f\u6210\u7ee9<\/p>\n
\u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u6240\u6709\u8bb0\u5f55\u7684\u8bed\u6587\uff0c\u6570\u5b66\uff0c\u82f1\u8bed\u548c\u603b\u5206\u4fe1\u606f \u00a0<\/p>\n
SELECT FROM \u5b66\u751f\u6210\u7ee9 \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u7684\u5168\u90e8\u4fe1\u606f\uff0c\u8fd9\u91cc\u53ef\u4ee5\u7528\u201c<\/em>\u201d\u4ee3\u8868\u6240\u6709\u5b57\u6bb5<\/p>\n \u00a0 SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE \u8bed\u6587>=85<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u8bed\u6587\u6210\u7ee9\u5927\u4e8e\u7b49\u4e8e85\u7684\u8bb0\u5f55\u4fe1\u606f \u00a0<\/p>\n SELECT FROM \u5b66\u751f\u6210\u7ee9 WHERE \u59d3\u540d LIKE \u201c\u674e<\/em>\u201d<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\uff0c\u59d3\u540d\u7b2c\u4e00\u4e2a\u5b57\u4e3a\u674e\u7684\u8bb0\u5f55<\/p>\n \u00a0 SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE \u59d3\u540d LIKE \u201c\u674e\uff1f\u201d<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\uff0c\u59d3\u540d\u4e3a\u4e24\u4e2a\u5b57\uff0c\u7b2c\u4e00\u4e2a\u5b57\u4e3a\u674e\uff0c\u7b2c\u4e8c\u4e2a\u5b57\u4e3a\u4efb\u610f\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT FROM \u5b66\u751f\u6210\u7ee9 WHERE \u59d3\u540d LIKE \u201c<\/em>\u5f3a\u201d<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\uff0c\u59d3\u540d\u6700\u540e\u4e00\u4e2a\u5b57\u4e3a\u201c\u5f3a\u201d\u7684\u8bb0\u5f55<\/p>\n \u00a0 SELECT FROM \u5b66\u751f\u6210\u7ee9 WHERE \u59d3\u540d LIKE \u201c<\/em>\u5f3a*\u201d<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\uff0c\u59d3\u540d\u4e2d\u542b\u6709\u201c\u5f3a\u201d\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE \u662f\u5426\u56e2\u5458<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u662f\u5426\u56e2\u5458\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE NOT \u662f\u5426\u56e2\u5458<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u6240\u6709\u4e0d\u662f\u56e2\u5458\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE \u51fa\u751f\u65e5\u671f=#8\/20\/1987#<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u51fa\u751f\u65e5\u671f\u4e3a1989\u5e748\u670820\u65e5\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE \u51fa\u751f\u65e5\u671f>#8\/20\/1987#<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u51fa\u751f\u65e5\u671f\u4e3a1989\u5e748\u670820\u65e5\u4ee5\u540e\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE MONTH\uff08\u51fa\u751f\u65e5\u671f\uff09=8<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u51fa\u751f\u6708\u4efd\u4e3a8\u6708\u7684\u8bb0\u5f55 YEAR\uff08\uff09\u53d6\u5e74\u00a0 MONTH\uff08\uff09\u53d6\u6708\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n DAY\uff08\uff09\u53d6\u65e5 DATA\uff08\uff09\u53d6\u8ba1\u7b97\u673a\u7cfb\u7edf\u5373\u65f6\u65e5\u671f\u00a0 NOW\uff08\uff09\u53d6\u8ba1\u7b97\u673a\u7cfb\u7edf\u5373\u65f6\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u7cbe\u786e\u5230\u79d2 \u00a0<\/p>\n SELECT \u59d3\u540d\uff0cYEAR(NOW())-YEAR(\u51fa\u751f\u65e5\u671f) AS \u5e74\u9f84 FROM \u5b66\u751f\u6863\u6848<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6863\u6848\u201d\u6570\u636e\u8868\u4e2d\u7684\u5b66\u751f\u59d3\u540d\u548c\u5e74\u9f84\u4fe1\u606f \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE\u8bed\u6587>=60 AND \u8bed\u6587<90<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u8bed\u6587\u6210\u7ee9\u5927\u4e8e\u7b49\u4e8e60\u5e76\u4e14\u5c0f\u4e8e90\u7684\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 WHERE\u8bed\u6587>=60 OR \u6570\u5b66>=60<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u8bed\u6587\u6210\u7ee9\u5927\u4e8e\u7b49\u4e8e60\u6216\u6570\u5b66\u5927\u4e8e\u7b49\u4e8e60\u7684\u8bb0\u5f55<\/p>\n \u805a\u96c6\u51fd\u6570 COUNT\uff08\uff09\u7edf\u8ba1\u6240\u9009\u6570\u636e\u7684\u884c\u6570\u00a0<\/p>\n SUM\uff08\uff09\u8ba1\u7b97\u6570\u636e\u5217\u7684\u00a0 \u00a0 \u00a0AVG\uff08\uff09\u8ba1\u7b97\u6570\u636e\u5217\u7684\u5e73\u5747\u503c\u00a0 \u00a0 \u00a0MIN\uff08\uff09\u8ba1\u7b97\u6570\u636e\u5217\u7684\u6700\u5c0f\u503c\u00a0 \u00a0 \u00a0 \u00a0MAX\uff08\uff09\u8ba1\u7b97\u6570\u636e\u5217\u7684\u6700\u5927\u503c \u00a0<\/p>\n SELECT COUNT(*) AS \u603b\u4eba\u6570 FROM \u5b66\u751f\u6210\u7ee9 \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u603b\u7684\u8bb0\u5f55\u6761\u6570<\/p>\n SELECT AVG(\u8bed\u6587),MAX\uff08\u6570\u5b66\uff09 FROM \u5b66\u751f\u6210\u7ee9 \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u8bed\u6587\u7684\u5e73\u5747\u5206\u548c\u6570\u5b66\u7684\u6700\u9ad8\u5206 \u00a0<\/p>\n SELECT AVG(\u8bed\u6587),MAX\uff08\u6570\u5b66\uff09 FROM \u5b66\u751f\u6210\u7ee9 WHERE \u82f1\u8bed>80<\/p>\n \u663e\u793a\u201c\u5b66\u751f\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u82f1\u8bed\u6210\u7ee9\u5927\u4e8e80\u5206\u540c\u5b66\u7684\u8bed\u6587\u7684\u5e73\u5747\u5206\u548c\u6570\u5b66\u7684\u6700\u9ad8\u5206 \u00a0<\/p>\n SELECT \u73ed\u7ea7\uff0cAVG(\u8bed\u6587) FROM \u5e74\u7ea7\u6210\u7ee9 GROUP BY \u73ed\u7ea7 \u6839\u636e\u73ed\u7ea7\uff0c\u5206\u522b\u7edf\u8ba1\u5404\u73ed\u7684\u8bed\u6587\u5e73\u5747\u6210\u7ee9 \u00a0<\/p>\n SELECT \u73ed\u7ea7\uff0cAVG(\u8bed\u6587) AS \u8bed\u6587\u5e73\u5747\u5206 FROM \u5e74\u7ea7\u6210\u7ee9 WHERE \u8bed\u6587>85 GROUP BY \u73ed\u7ea7<\/p>\n \u628a\u201c\u5e74\u7ea7\u6210\u7ee9\u201d\u6570\u636e\u8868\u4e2d\u8bed\u6587\u5927\u4e8e85\u5206\u7684\u8bb0\u5f55\uff0c\u6839\u636e\u73ed\u7ea7\u5206\u522b\u7edf\u8ba1\u5404\u73ed\u7684\u8bed\u6587\u5e73\u5747\u6210\u7ee9 \u00a0<\/p>\n SELECT \u73ed\u7ea7\uff0cAVG(\u8bed\u6587) AS \u8bed\u6587\u5e73\u5747\u5206 FROM \u5e74\u7ea7\u6210\u7ee9GROUP BY \u73ed\u7ea7 HAVING AVG\uff08\u8bed\u6587\uff09>85<\/p>\n \u5148\u6839\u636e\u73ed\u7ea7\u5206\u522b\u7edf\u8ba1\u5404\u73ed\u7684\u8bed\u6587\u5e73\u5747\u5206\uff0c\u518d\u628a\u8bed\u6587\u5e73\u5747\u5206\u5927\u4e8e85\u5206\u7684\u8bb0\u5f55\u663e\u793a\u51fa\u6765 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 ORDER BY \u8bed\u6587<\/p>\n \u6309\u8bed\u6587\u6210\u7ee9\u7684\u5347\u5e8f\u663e\u793a\u201c\u5e74\u7ea7\u6210\u7ee9\u201d\u6570\u636e\u8868\u7684\u6240\u6709\u8bb0\u5f55 \u00a0<\/p>\n SELECT * FROM \u5b66\u751f\u6210\u7ee9 ORDER BY \u73ed\u7ea7\uff0c\u8bed\u6587 DESC<\/p>\n \u5bf9\u201c\u5e74\u7ea7\u6210\u7ee9\u201d\u6570\u636e\u8868\u6309\u73ed\u7ea7\u9012\u589e\uff0c\u8bed\u6587\u6210\u7ee9\u9012\u51cf\u6392\u5e8f \u00a0<\/p>\n \u5728VB\u4e2d\uff0c\u968f\u673a\u6570\u8868\u8fbe\u5f0f\u4e3a\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n int(rnd*(\u4e0a\u9650-\u4e0b\u9650+1)+\u4e0b\u9650)\u00a0\u00a0\u00a0\u00a0<\/p>\n \u00a9\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\uff1a\u6765\u81ea51CTO\u535a\u5ba2\u4f5c\u8005\u6768\u4ea6\u6d9b\u7684\u539f\u521b\u4f5c\u54c1\uff0c\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u53d6\u8f6c\u8f7d\u6388\u6743\uff0c\u5426\u5219\u5c06\u8ffd\u7a76\u6cd5\u5f8b\u8d23\u4efb SQL\u8bed\u8a00\u4f8b\u5b50\u6c47\u603b CREATE DATABASE \u5b66\u751f\u6863\u6848 \u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201c\u5b66\u751f\u6863\u6848\u201d\u7684\u6570\u636e\u5e93 \u00a0 CREAT […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-6987","post","type-post","status-publish","format-aside","hentry","category-zzjy","post_format-post-format-aside"],"_links":{"self":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/posts\/6987","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6987"}],"version-history":[{"count":0,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=\/wp\/v2\/posts\/6987\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aiersheng.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}int(rnd*(500-100+1)+100)<\/h2>\n
\n\u8ba1\u7b97\u673a\u7c7bSQL\u8bed\u8a00\u4f8b\u5b50\u6c47\u603b
\nhttps:\/\/blog.51cto.com\/yangsir0576\/5378800<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"