JOIN 语句结合 数据库名.表名 语法。，，``sql，SELECT db1.table1.column1, db2.table2.column2，FROM db1.table1，JOIN db2.table2 ON db1.table1.common_field = db2.table2.common_field;，``JOIN 语句结合 数据库名.表名 语法。，，``sql，SELECT db1.table1.column1, db2.table2.column2，FROM db1.table1，JOIN db2.table2 ON db1.table1.common_field = db2.table2.common_field;，``php，$db = new PDO('mysql:host=localhost;dbname=your_db', 'username', 'password');，$sql = "SELECT a.*, b.* FROM table1 a JOIN table2 b ON a.id = b.a_id LIMIT :offset, :limit";，$stmt = $db>prepare($sql);，$offset = ($page 1) * $perPage;，$stmt>bindValue(':offset', $offset, PDO::PARAM_INT);，$stmt>bindValue(':limit', $perPage, PDO::PARAM_INT);，$stmt>execute();，$results = $stmt>fetchAll(PDO::FETCH_ASSOC);，``，，这段代码展示了如何在 PHPCMS 中使用 PDO 进行联合查询并实现分页功能。asp，，`，，请将 yourdatabase.mdb、table1、table2、column1、column2` 等替换为实际的数据库文件名、表名和字段名。Concat, Union, Intersect 和 Except 方法对多个集合进行查询。Powered By Z-BlogPHP 1.7.3
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