{"id":152,"date":"2019-09-11T23:28:10","date_gmt":"2019-09-11T15:28:10","guid":{"rendered":"http:\/\/www.cgh0610.cn\/?p=152"},"modified":"2019-09-11T23:28:10","modified_gmt":"2019-09-11T15:28:10","slug":"mysql%e4%b8%ad%e5%ad%98%e5%82%a8%e8%bf%87%e7%a8%8b%e6%88%96%e5%87%bd%e6%95%b0%e4%bd%bf%e7%94%a8select-into%e8%af%ad%e5%8f%a5%e7%bb%99%e5%8f%98%e9%87%8f%e8%b5%8b%e5%80%bc%e6%b2%a1%e6%9c%89%e5%8c%b9","status":"publish","type":"post","link":"https:\/\/www.cgh0610.cn\/?p=152","title":{"rendered":"Mysql\u4e2d\u5b58\u50a8\u8fc7\u7a0b\u6216\u51fd\u6570\u4f7f\u7528select into\u8bed\u53e5\u7ed9\u53d8\u91cf\u8d4b\u503c\u6ca1\u6709\u5339\u914d\u8bb0\u5f55\u65f6\u7684\u7ed3\u679c"},"content":{"rendered":"<h2>\u524d\u8a00<\/h2>\n<p>\u5bf9select into\u8bed\u53e5\u611f\u5174\u8da3\u662f\u56e0\u4e3a\u770b\u4e86\u9879\u76ee\u4e2d\u7684\u4e00\u4e2a\u5b58\u50a8\u8fc7\u7a0b\u5f15\u8d77\u7684\uff0c\u5728\u7a0b\u5e8f\u8fd0\u884c\u4e4b\u524d\u770b\u4e86\u5b58\u50a8\u8fc7\u7a0b\u7684\u903b\u8f91\uff0c\u672c\u4ee5\u4e3a\u6ca1\u6709\u6570\u636e\u65f6\u4f1a\u62a5\u9519\uff0c\u7ed3\u679c\u7a0b\u5e8f\u5374\u6b63\u5e38\u8fd0\u884c\uff0c\u8fd9\u8bf4\u660e\u6211\u5bf9select into\u8bed\u53e5\u7406\u89e3\u7684\u95ee\u9898\uff0c\u540c\u65f6\u4e5f\u66b4\u9732\u4e86\u4e00\u4e2a\u77e5\u8bc6\u76f2\u70b9\uff0c\u6240\u4ee5\u5199\u4e86\u4e2a\u5c0f\u4f8b\u5b50\u6d4b\u8bd5\u4e00\u4e0b\uff0c\u5e76\u628a\u6d4b\u8bd5\u7684\u8fc7\u7a0b\u8bb0\u5f55\u65b9\u4fbf\u65e5\u540e\u67e5\u627e\u3002<\/p>\n<h2>\u521b\u5efa\u6d4b\u8bd5\u8868\u683c<\/h2>\n<p>\u4e3a\u4e86\u66f4\u6e05\u695a\u7684\u8868\u660e\u95ee\u9898\uff0c\u6211\u4eec\u521b\u5efa\u7684\u8868\u683c\u5c3d\u53ef\u80fd\u7684\u7b80\u5355\uff0c\u540c\u65f6\u4e3a\u4e86\u6d4b\u8bd5\u7a7a\u503c\u7684\u60c5\u51b5\uff0c\u6570\u636e\u5217\u6211\u4eec\u4e0d\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u8868\u683c\u547d\u540d\u4e3a\u2019intotest\u2019\uff0c\u521b\u5efa\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">CREATE TABLE `intotest` (\n  `id` int(4) NOT NULL AUTO_INCREMENT,\n  `number` int(4),\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB DEFAULT CHARSET=binary ROW_FORMAT=DYNAMIC;\n<\/code><\/pre>\n<h2>\u63d2\u5165\u6d4b\u8bd5\u6570\u636e<\/h2>\n<p>\u8868\u683c\u5efa\u7acb\u5b8c\u6210\u53ef\u4ee5\u4f7f\u7528\u53ef\u89c6\u5316\u5de5\u5177\u6216\u8005insert\u8bed\u53e5\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\uff0c\u63d2\u5165\u6d4b\u8bd5\u6570\u636e\u540e\u67e5\u8be2\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">mysql&gt; select * from intotest;\n+----+--------+\n| id | number |\n+----+--------+\n|  1 |      1 |\n|  2 |      2 |\n|  3 |   NULL |\n+----+--------+\n3 rows in set (0.00 sec)\n<\/code><\/pre>\n<h2>\u5efa\u7acb\u4e00\u4e2a\u5b58\u50a8\u8fc7\u7a0b<\/h2>\n<p>\u6211\u4eec\u5efa\u7acb\u4e00\u4e2a\u7528\u4e8e\u6d4b\u8bd5\u7684\u5b58\u50a8\u8fc7\u7a0b\uff0c\u4e3b\u8981\u7684\u903b\u8f91\u5c31\u662f\u770b\u770b\u5f53select into\u8bed\u53e5\u627e\u4e0d\u5230\u5339\u914d\u8bb0\u5f55\u65f6\uff0c\u88ab\u8d4b\u503c\u7684\u53d8\u91cf\u4f1a\u600e\u4e48\u6837\uff0c\u5efa\u7acb\u5b58\u50a8\u8fc7\u7a0b\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">CREATE PROCEDURE `select_into_value2`()\nBEGIN\n    DECLARE _value INT DEFAULT 0;\n\n    SELECT number FROM intotest WHERE id=1 INTO _value;\n    SELECT _value;\nEND\n<\/code><\/pre>\n<p>\u8fd9\u4e2a\u5b58\u50a8\u8fc7\u7a0b\u8fd0\u884c\u6b63\u5e38\uff0c\u914d\u5408\u521a\u624d\u6211\u4eec\u63d2\u5165\u8868\u683c\u7684\u8bb0\u5f55\u53ef\u4ee5\u77e5\u9053\uff0c\u8fd0\u884c\u540e\u7684\u7ed3\u679c\u4e3a1:<\/p>\n<pre><code class=\"language-sql line-numbers\">mysql&gt; call select_into_value();\n+--------+\n| _value |\n+--------+\n|      1 |\n+--------+\n1 row in set (0.00 sec)\n\nQuery OK, 0 rows affected (0.00 sec)\n<\/code><\/pre>\n<h2>\u6d4b\u8bd5\u8fc7\u7a0b<\/h2>\n<p>\u5f53\u67e5\u8be2\u7ed3\u679c\u4e2d\u4e0d\u5b58\u5728\u7b26\u5408\u6761\u4ef6\u7684\u8bb0\u5f55\u65f6\u4f1a\u600e\u6837\uff0c\u4fee\u6539\u5b58\u50a8\u8fc7\u7a0b\u5b9a\u4e49\uff0c\u7136\u540e\u67e5\u770b\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">CREATE PROCEDURE `select_into_value2`()\nBEGIN\n    DECLARE _value INT DEFAULT 0;\n\n    SELECT number FROM intotest WHERE id=5 INTO _value;\n    SELECT _value;\nEND\n<\/code><\/pre>\n<pre><code class=\"language-sql line-numbers\">mysql&gt; call select_into_value();\n+--------+\n| _value |\n+--------+\n|      0 |\n+--------+\n1 row in set (0.00 sec)\n\nQuery OK, 0 rows affected (0.00 sec)\n<\/code><\/pre>\n<p>\u7ed3\u679c\u4e3a0\uff0c\u4e5f\u5c31\u662f\u8bf4\u5f53\u67e5\u4e0d\u5230\u5339\u914d\u7ed3\u679c\u65f6\uff0c\u4e0d\u4f1a\u6267\u884cselect into\u7684\u8d4b\u503c\u6548\u679c\u3002<\/p>\n<p>\u5f53\u5339\u914d\u5230\u67e5\u8be2\u7ed3\u679c\u4f46\u662f\u67e5\u8be2\u51fa\u6765\u7684\u6570\u503c\u4e3anull\u4f1a\u600e\u6837\uff0c\u4fee\u6539\u5b58\u50a8\u8fc7\u7a0b\u5b9a\u4e49\uff0c\u7136\u540e\u67e5\u770b\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">CREATE PROCEDURE `select_into_value2`()\nBEGIN\n    DECLARE _value INT DEFAULT 0;\n\n    SELECT number FROM intotest WHERE id=3 INTO _value;\n    SELECT _value;\nEND\n<\/code><\/pre>\n<pre><code class=\"language-sql line-numbers\">mysql&gt; call select_into_value();\n+--------+\n| _value |\n+--------+\n|   NULL |\n+--------+\n1 row in set (0.00 sec)\n\nQuery OK, 0 rows affected (0.00 sec)\n<\/code><\/pre>\n<p>\u7ed3\u679c\u4e3aNULL\uff0c\u4e5f\u5c31\u662f\u8bf4\u5f53\u67e5\u5230\u5339\u914d\u7ed3\u679c\u65f6\uff0c\u4e0d\u7ba1\u7ed3\u679c\u65f6\u4ec0\u4e48\u90fd\u4f1a\u8d4b\u503c\u5230\u6307\u5b9a\u7684\u53d8\u91cf\u4e2d\uff08\u7c7b\u578b\u4e0d\u5339\u914d\u7684sql\u9519\u8bef\u9664\u5916\uff09\u3002<\/p>\n<p>\u5f53\u8fde\u7eed\u67e5\u8be2\u8d4b\u503c\u4e2d\u95f4\u51fa\u73b0\u4e0d\u5339\u914d\u4f1a\u600e\u6837\uff0c\u4fee\u6539\u5b58\u50a8\u8fc7\u7a0b\u5b9a\u4e49\uff0c\u7136\u540e\u67e5\u770b\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">CREATE PROCEDURE `select_into_value2`()\nBEGIN\n    DECLARE _value INT DEFAULT 0;\n\n    SELECT number FROM intotest WHERE id=2 INTO _value;\n    SELECT number FROM intotest WHERE id=5 INTO _value;\n    SELECT _value;\nEND\n<\/code><\/pre>\n<pre><code class=\"language-sql line-numbers\">mysql&gt; call select_into_value();\n+--------+\n| _value |\n+--------+\n|      2 |\n+--------+\n1 row in set (0.00 sec)\n\nQuery OK, 0 rows affected (0.00 sec)\n<\/code><\/pre>\n<p>\u60f3\u5fc5\u660e\u767d\u4e86\u524d\u4e24\u79cd\u60c5\u51b5\uff0c\u8fd9\u7b2c\u4e09\u79cd\u4e5f\u5e94\u8be5\u660e\u767d\u4e86\uff0c\u4e24\u6761\u8bed\u53e5\u987a\u5e8f\u6267\u884c\uff0c\u627e\u5230\u5339\u914d\u7684\u5c31\u8d4b\u503c\uff0c\u627e\u4e0d\u5230\u5c31\u653e\u5f03\u64cd\u4f5c\uff0c\u7ed3\u679c\u5c31\u4fdd\u7559\u4e86\u4e0a\u4e00\u6b21\u6210\u529f\u8d4b\u503c\u7684\u7ed3\u679c\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u5173\u4e8eselect into\u8bed\u53e5\u8d4b\u503c\u7684\u89c4\u5219\u5c31\u4e00\u53e5\u8bdd\uff0c\u627e\u5230\u4e86\u7b26\u5408\u6761\u4ef6\u7684\u8bb0\u5f55\u5c31\u8d4b\u503c\uff0c\u627e\u4e0d\u5230\u5c31\u7b97\u4e86\u3002<br \/>\n\u5728\u627e\u5230\u8bb0\u5f55\u7684\u524d\u63d0\u4e0b\uff0c\u5982\u679c\u7c7b\u578b\u4e0d\u5339\u914d\u4f1a\u5bfc\u81f4\u8d4b\u503c\u5931\u8d25\u5e76\u62a5\u9519\uff0c\u6bd4\u5982\u67e5\u8be2\u5230\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u6574\u578b\u53d8\u91cf\u3002<br \/>\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<br \/>\n\u7248\u6743\u58f0\u660e\uff1a\u672c\u6587\u4e3aCSDN\u535a\u4e3b\u300cAlbertS\u300d\u7684\u539f\u521b\u6587\u7ae0\uff0c\u9075\u5faa CC 4.0 BY-SA \u7248\u6743\u534f\u8bae\uff0c\u8f6c\u8f7d\u8bf7\u9644\u4e0a\u539f\u6587\u51fa\u5904\u94fe\u63a5\u53ca\u672c\u58f0\u660e\u3002<br \/>\n\u539f\u6587\u94fe\u63a5\uff1ahttps:\/\/blog.csdn.net\/albertsh\/article\/details\/84176421<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u5bf9select into\u8bed\u53e5\u611f\u5174\u8da3\u662f\u56e0\u4e3a\u770b\u4e86\u9879\u76ee\u4e2d\u7684\u4e00\u4e2a\u5b58\u50a8\u8fc7\u7a0b\u5f15\u8d77\u7684\uff0c\u5728\u7a0b\u5e8f\u8fd0\u884c\u4e4b\u524d\u770b\u4e86\u5b58\u50a8\u8fc7\u7a0b\u7684\u903b\u8f91 &hellip; <a href=\"https:\/\/www.cgh0610.cn\/?p=152\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">Mysql\u4e2d\u5b58\u50a8\u8fc7\u7a0b\u6216\u51fd\u6570\u4f7f\u7528select into\u8bed\u53e5\u7ed9\u53d8\u91cf\u8d4b\u503c\u6ca1\u6709\u5339\u914d\u8bb0\u5f55\u65f6\u7684\u7ed3\u679c<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":[],"categories":[39,12],"tags":[],"_links":{"self":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/152"}],"collection":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=152"}],"version-history":[{"count":2,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/152\/revisions"}],"predecessor-version":[{"id":154,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/152\/revisions\/154"}],"wp:attachment":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}