Question

i tried this one但没有运气。我的要求是我有一个名为'tabAccount'的表。它有一些重复值和字段的空值 'parent_account'。我想只选择字段parent_account的不同值，也选择值为Ledger的字段group_or_ledger和值为Expense的字段root_type。我怎么能这样做？

我试过这样的事情

$expense    =   TabAccount::find()->select('DISTINCT `parent_account`')->where(['root_type'=>'Expense'])
                    ->andWhere(['group_or_ledger'=>'Ledger'])
                    ->andWhere(['not', ['parent_account' => null]])->all();

Answer 1

distinct是一个布尔函数，请参阅Yii2 api distinct()

$query = TabAccount::find();
$query->select('parent_account');
$query->distinct();
$query->where(['root_type'=>'Expense']);
$query->andWhere(['group_or_ledger'=>'Ledger'])
$query->andWhere(['not', ['parent_account' => null]]);
$expense = $query->all();

您也可以尝试：

$query = new Query;             
$query->select('parent_account')
->from(TabAccount::tableName())
->distinct()
->where(['root_type'=>'Expense'])
->andWhere(['group_or_ledger'=>'Ledger'])
->andWhere(['not', ['parent_account' => null]]);

$command = $query->createCommand();
$data = $command->queryAll();

在yii2中从Db获取不同的行

1 个答案: