{"id":1695,"date":"2017-01-23T15:52:16","date_gmt":"2017-01-23T07:52:16","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=1695"},"modified":"2017-01-23T15:52:16","modified_gmt":"2017-01-23T07:52:16","slug":"mysql-%e9%80%89%e6%8b%a9%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/mysql-%e9%80%89%e6%8b%a9%e6%95%b0%e6%8d%ae%e5%ba%93\/","title":{"rendered":"MySQL \u9009\u62e9\u6570\u636e\u5e93"},"content":{"rendered":"

\u4ece\u547d\u4ee4\u63d0\u793a\u7a97\u53e3\u4e2d\u9009\u62e9MySQL\u6570\u636e\u5e93<\/h2>\n

\u5728 mysql> \u63d0\u793a\u7a97\u53e3\u4e2d\u53ef\u4ee5\u5f88\u7b80\u5355\u7684\u9009\u62e9\u7279\u5b9a\u7684\u6570\u636e\u5e93\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528SQL\u547d\u4ee4\u6765\u9009\u62e9\u6307\u5b9a\u7684\u6570\u636e\u5e93\u3002<\/p>\n

\u5b9e\u4f8b<\/h3>\n

\u4ee5\u4e0b\u5b9e\u4f8b\u9009\u53d6\u4e86\u6570\u636e\u5e93 RUNOOB:<\/p>\n

[<\/span>root@host<\/span>]#<\/span> mysql <\/span>-<\/span>u root <\/span>-<\/span>p\r\n<\/span>Enter<\/span> password<\/span>:******<\/span>\r\nmysql<\/span>><\/span> use<\/span> RUNOOB<\/span>;<\/span>\r\nDatabase<\/span> changed\r\nmysql<\/span>><\/span><\/pre>\n
\u6267\u884c\u4ee5\u4e0a\u547d\u4ee4\u540e\uff0c\u4f60\u5c31\u5df2\u7ecf\u6210\u529f\u9009\u62e9\u4e86 RUNOOB \u6570\u636e\u5e93\uff0c\u5728\u540e\u7eed\u7684\u64cd\u4f5c\u4e2d\u90fd\u4f1a\u5728 RUNOOB \u6570\u636e\u5e93\u4e2d\u6267\u884c\u3002<\/p>\n
\u6ce8\u610f:<\/strong>\u6240\u6709\u7684\u6570\u636e\u5e93\u540d\uff0c\u8868\u540d\uff0c\u8868\u5b57\u6bb5\u90fd\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684\u3002\u6240\u4ee5\u4f60\u5728\u4f7f\u7528SQL\u547d\u4ee4\u65f6\u9700\u8981\u8f93\u5165\u6b63\u786e\u7684\u540d\u79f0\u3002<\/p>\n
\n
\u4f7f\u7528PHP\u811a\u672c\u9009\u62e9MySQL\u6570\u636e\u5e93<\/h2>\n
PHP \u63d0\u4f9b\u4e86\u51fd\u6570 mysql_select_db \u6765\u9009\u53d6\u4e00\u4e2a\u6570\u636e\u5e93\u3002\u51fd\u6570\u5728\u6267\u884c\u6210\u529f\u540e\u8fd4\u56de TRUE \uff0c\u5426\u5219\u8fd4\u56de FALSE \u3002<\/p>\n
\u8bed\u6cd5<\/h3>\n
bool<\/span> mysql_select_db<\/span>(<\/span> db_name<\/span>,<\/span> connection <\/span>);<\/span><\/pre>\n\n\n\n\n\n
\u53c2\u6570<\/th>\n\u63cf\u8ff0<\/th>\n<\/tr>\n
db_name<\/td>\n\u5fc5\u9700\u3002\u89c4\u5b9a\u8981\u9009\u62e9\u7684\u6570\u636e\u5e93\u3002<\/td>\n<\/tr>\n
connection<\/td>\n\u53ef\u9009\u3002\u89c4\u5b9a MySQL \u8fde\u63a5\u3002\u5982\u679c\u672a\u6307\u5b9a\uff0c\u5219\u4f7f\u7528\u4e0a\u4e00\u4e2a\u8fde\u63a5\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5b9e\u4f8b<\/h3>\n
\u4ee5\u4e0b\u5b9e\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528 mysql_select_db \u51fd\u6570\u6765\u9009\u53d6\u4e00\u4e2a\u6570\u636e\u5e93\uff1a<\/p>\n
<html><\/span>\r\n<head><\/span>\r\n<meta<\/span> charset<\/span>=<\/span>\"utf-8\"<\/span>><\/span> \r\n<title><\/span>\u9009\u62e9 MySQL \u6570\u636e\u5e93<\/span><\/title><\/span>\r\n<\/head><\/span>\r\n<body><\/span>\r\n<?<\/span>php\r\n$dbhost <\/span>=<\/span> 'localhost:3036'<\/span>;<\/span>\r\n$dbuser <\/span>=<\/span> 'guest'<\/span>;<\/span>\r\n$dbpass <\/span>=<\/span> 'guest123'<\/span>;<\/span>\r\n$conn <\/span>=<\/span> mysql_connect<\/span>(<\/span>$dbhost<\/span>,<\/span> $dbuser<\/span>,<\/span> $dbpass<\/span>);<\/span>\r\nif<\/span>(!<\/span> $conn <\/span>)<\/span>\r\n{<\/span>\r\n  die<\/span>(<\/span>'\u8fde\u63a5\u5931\u8d25: '<\/span> .<\/span> mysql_error<\/span>());<\/span>\r\n}<\/span>\r\necho <\/span>'\u8fde\u63a5\u6210\u529f'<\/span>;<\/span>\r\nmysql_select_db<\/span>(<\/span> 'RUNOOB'<\/span> );<\/span>\r\nmysql_close<\/span>(<\/span>$conn<\/span>);<\/span>\r\n?><\/span>\r\n<\/body><\/span>\r\n<\/html>\r\n\r\n\u539f\u6587\u94fe\u63a5\uff1ahttps:\/\/www.runoob.com\/mysql\/mysql-select-database.html<\/span><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u4ece\u547d\u4ee4\u63d0\u793a\u7a97\u53e3\u4e2d\u9009\u62e9MySQL\u6570\u636e\u5e93 \u5728 mysql> \u63d0\u793a\u7a97\u53e3\u4e2d\u53ef\u4ee5\u5f88\u7b80\u5355\u7684\u9009\u62e9\u7279\u5b9a\u7684\u6570\u636e\u5e93\u3002\u4f60\u53ef\u4ee5\u4f7f … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5,10],"tags":[45],"class_list":["post-1695","post","type-post","status-publish","format-standard","hentry","category-jishu","category-shujuku","tag-mysql"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=1695"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1695\/revisions"}],"predecessor-version":[{"id":1696,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1695\/revisions\/1696"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=1695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=1695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=1695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}