\u968f\u7740web\u5e94\u7528\u7a0b\u5e8f\u7684\u53d1\u5c55\u548c\u666e\u53ca\uff0c\u6570\u636e\u5904\u7406\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u800c\u6570\u636e\u5e93\u662f\u6570\u636e\u5904\u7406\u7684\u6838\u5fc3\uff0c\u672c\u6587\u5c06\u4ecb\u7ecdyii\u6846\u67b6\u4e2d\u7684\u67e5\u8be2\u6784\u5efa\u5668\uff0c\u5b83\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002<\/p>\n
Yii\u6846\u67b6\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\uff0c\u57fa\u4e8eMVC\u6a21\u5f0f\u7684PHP\u6846\u67b6\u3002\u5b83\u63d0\u4f9b\u4e86\u4f17\u591a\u7684\u7279\u6027\u548c\u7ec4\u4ef6\uff0c\u5176\u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u7ec4\u4ef6\u5c31\u662f\u67e5\u8be2\u6784\u5efa\u5668\uff08QueryBuilder\uff09\u3002\u67e5\u8be2\u6784\u5efa\u5668\u53ef\u4ee5\u8ba9\u6211\u4eec\u4ee5\u66f4\u52a0\u4f18\u96c5\u7684\u65b9\u5f0f\uff0c\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n
\u4e0e\u4f20\u7edf\u7684SQL\u8bed\u53e5\u4e0d\u540c\uff0c\u67e5\u8be2\u6784\u5efa\u5668\u662f\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u6765\u6784\u5efaSQL\u8bed\u53e5\u3002\u6211\u4eec\u4f7f\u7528PHP\u4ee3\u7801\u6765\u8868\u793a\u6211\u4eec\u8981\u8fdb\u884c\u7684\u67e5\u8be2\uff0c\u800c\u67e5\u8be2\u6784\u5efa\u5668\u4f1a\u8d1f\u8d23\u5c06\u8fd9\u4e9b\u4ee3\u7801\u8f6c\u6362\u4e3a\u76f8\u5e94\u7684SQL\u8bed\u53e5\u3002<\/p>\n
\u4ee5\u4e0b\u662fYii\u6846\u67b6\u4e2d\u7684\u67e5\u8be2\u6784\u5efa\u5668\u7684\u4e00\u4e9b\u5e38\u7528\u65b9\u6cd5\u3002<\/p>\n
select()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u8981\u9009\u62e9\u54ea\u4e9b\u5217\u3002\u5982\u679c\u6211\u4eec\u9700\u8981\u9009\u62e9\u6240\u6709\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528*\u4f5c\u4e3a\u53c2\u6570\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users');<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5982\u679c\u6211\u4eec\u53ea\u9700\u8981\u9009\u62e9\u67d0\u4e9b\u7279\u5b9a\u7684\u5217\uff0c\u53ef\u4ee5\u5c06\u5217\u540d\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9select()\u65b9\u6cd5\uff0c\u591a\u4e2a\u5217\u540d\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4f20\u9012\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select(['id', 'username'])->from('users');<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\n- from()<\/li>\n<\/ol>\n
from()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u67e5\u8be2\u7684\u6570\u636e\u8868\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users');<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\n- where()<\/li>\n<\/ol>\n
where()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u67e5\u8be2\u6761\u4ef6\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users')->where(['status' => 1]);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff0cstatus\u4e3a\u5217\u540d\uff0c1\u4e3a\u8be5\u5217\u7684\u503c\u3002<\/p>\n
\u9664\u4e86\u4f7f\u7528\u952e\u503c\u5bf9\u4ee5\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4f20\u9012\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u7684\u6761\u4ef6\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u9ed8\u8ba4\u4e3a\u201cAND\u201d\u5173\u7cfb\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users')->where(['status' => 1, 'age' => 18]);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u751f\u6210\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT * FROM `users` WHERE `status`=:status AND `age`=:age<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5982\u679c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u201cOR\u201d\u5173\u7cfb\uff0c\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users')->where(['or', ['status' => 1], ['age' => 18]]);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u751f\u6210\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT * FROM `users` WHERE (`status`=:status OR `age`=:age)<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\n- limit()\u548coffset()<\/li>\n<\/ol>\n
limit()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u67e5\u8be2\u7ed3\u679c\u8fd4\u56de\u7684\u6700\u5927\u884c\u6570\uff0coffset()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u67e5\u8be2\u7ed3\u679c\u7684\u504f\u79fb\u91cf\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users')->where(['status' => 1])->limit(10)->offset(5);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u751f\u6210\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT * FROM `users` WHERE `status`=:status LIMIT 10 OFFSET 5<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\n- orderBy()<\/li>\n<\/ol>\n
orderBy()\u65b9\u6cd5\u7528\u4e8e\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('*')->from('users')->where(['status' => 1])->orderBy('age');<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u751f\u6210\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT * FROM `users` WHERE `status`=:status ORDER BY `age`<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\n- groupBy()\u548chaving()<\/li>\n<\/ol>\n
groupBy()\u65b9\u6cd5\u7528\u4e8e\u5bf9\u7ed3\u679c\u8fdb\u884c\u5206\u7ec4\uff0chaving()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u5b9a\u5206\u7ec4\u6761\u4ef6\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
$query = Yii::$app->db->createCommand()->select('count(*) as cnt, status')->from('users')->groupBy('status')->having(['>', 'cnt', 10]);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd9\u5c06\u751f\u6210\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT count(*) as cnt, status FROM `users` GROUP BY `status` HAVING cnt > 10<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u67e5\u8be2\u6784\u5efa\u5668\u53ef\u4ee5\u8ba9\u6211\u4eec\u4ee5\u66f4\u52a0\u4f18\u96c5\u7684\u65b9\u5f0f\uff0c\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002\u5728\u4f7f\u7528Yii\u6846\u67b6\u5f00\u53d1Web\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u5145\u5206\u5229\u7528\u67e5\u8be2\u6784\u5efa\u5668\u6765\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fYii\u6846\u67b6\u4e2d\u7684\u67e5\u8be2\u6784\u5efa\u5668\uff1a\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u968f\u7740web\u5e94\u7528\u7a0b\u5e8f\u7684\u53d1\u5c55\u548c\u666e\u53ca\uff0c\u6570\u636e\u5904\u7406\u53d8\u5f97\u8d8a\u6765\u8d8a\u91cd\u8981\u3002\u800c\u6570\u636e\u5e93\u662f\u6570\u636e\u5904\u7406\u7684\u6838\u5fc3\uff0c\u672c\u6587\u5c06\u4ecb\u7ecdyii\u6846\u67b6\u4e2d\u7684\u67e5\u8be2\u6784\u5efa\u5668\uff0c\u5b83\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u3002 Yii\u6846\u67b6\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\uff0c\u57fa\u4e8eMVC\u6a21\u5f0f\u7684PHP\u6846\u67b6\u3002\u5b83\u63d0\u4f9b\u4e86\u4f17\u591a\u7684\u7279\u6027\u548c\u7ec4\u4ef6\uff0c\u5176\u4e2d\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u7ec4\u4ef6\u5c31\u662f\u67e5\u8be2\u6784\u5efa\u5668\uff08QueryBuilder\uff09\u3002\u67e5\u8be2\u6784\u5efa\u5668\u53ef\u4ee5\u8ba9\u6211\u4eec\u4ee5\u66f4\u52a0\u4f18\u96c5\u7684\u65b9\u5f0f\uff0c\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002 \u4e0e\u4f20\u7edf\u7684SQL\u8bed\u53e5\u4e0d\u540c\uff0c\u67e5\u8be2\u6784\u5efa\u5668\u662f\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u5f0f\u6765\u6784\u5efaSQL\u8bed\u53e5\u3002\u6211\u4eec\u4f7f\u7528PHP\u4ee3\u7801\u6765\u8868\u793a\u6211\u4eec\u8981\u8fdb\u884c\u7684\u67e5\u8be2\uff0c\u800c\u67e5\u8be2\u6784\u5efa\u5668\u4f1a\u8d1f\u8d23\u5c06\u8fd9\u4e9b\u4ee3\u7801\u8f6c\u6362\u4e3a\u76f8\u5e94\u7684SQL\u8bed\u53e5\u3002 \u4ee5\u4e0b\u662fYii\u6846\u67b6\u4e2d\u7684\u67e5\u8be2\u6784\u5efa\u5668\u7684\u4e00\u4e9b\u5e38\u7528\u65b9\u6cd5\u3002 select() select()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u8981\u9009\u62e9\u54ea\u4e9b\u5217\u3002\u5982\u679c\u6211\u4eec\u9700\u8981\u9009\u62e9\u6240\u6709\u5217\uff0c\u53ef\u4ee5\u4f7f\u7528*\u4f5c\u4e3a\u53c2\u6570\u3002\u793a\u4f8b\u5982\u4e0b\uff1a $query = Yii::$app->db->createCommand()->select(‘*’)->from(‘users’); \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c\u6211\u4eec\u53ea\u9700\u8981\u9009\u62e9\u67d0\u4e9b\u7279\u5b9a\u7684\u5217\uff0c\u53ef\u4ee5\u5c06\u5217\u540d\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9select()\u65b9\u6cd5\uff0c\u591a\u4e2a\u5217\u540d\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4f20\u9012\u3002\u793a\u4f8b\u5982\u4e0b\uff1a $query = Yii::$app->db->createCommand()->select([‘id’, ‘username’])->from(‘users’); \u767b\u5f55\u540e\u590d\u5236 from() from()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u67e5\u8be2\u7684\u6570\u636e\u8868\u3002\u793a\u4f8b\u5982\u4e0b\uff1a $query = Yii::$app->db->createCommand()->select(‘*’)->from(‘users’); \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 where() where()\u65b9\u6cd5\u7528\u4e8e\u8bbe\u7f6e\u67e5\u8be2\u6761\u4ef6\u3002\u793a\u4f8b\u5982\u4e0b\uff1a $query = Yii::$app->db->createCommand()->select(‘*’)->from(‘users’)->where([‘status’ => 1]); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0cstatus\u4e3a\u5217\u540d\uff0c1\u4e3a\u8be5\u5217\u7684\u503c\u3002 \u9664\u4e86\u4f7f\u7528\u952e\u503c\u5bf9\u4ee5\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u4f20\u9012\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u7684\u6761\u4ef6\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u9ed8\u8ba4\u4e3a\u201cAND\u201d\u5173\u7cfb\u3002\u793a\u4f8b\u5982\u4e0b\uff1a $query = Yii::$app->db->createCommand()->select(‘*’)->from(‘users’)->where([‘status’ => 1, ‘age’ => 18]); \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u751f\u6210\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a SELECT * FROM `users` WHERE `status`=:status AND `age`=:age \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u201cOR\u201d\u5173\u7cfb\uff0c\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a $query […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-23936","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=23936"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/23936\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=23936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=23936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=23936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}