Drupal7中常用的数据库操作实例

fields(array('field1' => 'value1','field2' => 'value2','fieldn' => $valuen))->execute();

'val1','field2' => 'val2','fieldn' => $valn);
$values[] = array('field1' => 'value1','fieldn' => $valuen);
$query = db_insert(‘table')->fields(array('field1','field2','fieldn'));
foreach ($values as $record) {
$query->values($record);
}
$query->execute();

->condition('name','Chico')
->fields(array('address' => 'Go West St.'))
->execute();
//等同于：

UPDATE {imports} SET address = 'Go West St.' WHERE name = 'Chico';

->condition('name' => 'Zeppo')
->execute();

->key(array('job' => 'Speaker'))
->insertFields(array('age' => 31,'name' => 'Meredith'))
->updateFields(array('name' => 'Tiffany'))
->execute();
//如果存在job为Speaker的一条记录，则更新name为Tiffany，如果不存在，就插入一条age为31，name为Meredith，job为Speaker的记录。

->expression('count','count + 1')
->condition('field1',$some_value)
->expression('field2','field2 + :inc',array(':inc' => 2))
->execute();

$query->addField('n','name','label');
$query->addField('n','value');