Can't Yii2 joint table query check individual fields?

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Release: 2023-03-01 06:18:01
Original
2241 people have browsed it

When tables are not joined, individual fields can be checked.

$user->find()->select(['userid', 'username'])->asArray()->all();
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Copy after login

Then SQL is also normal

select userid, username from ...
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Copy after login

But when joining tables. . .

$user->find()
->joinWith([
    'account' => function ($object) {
        $object->select(['account_name', 'account_level', 'account_status']);
    },
    'bank' => function ($object) {
        $object->select(['bank_name', 'bank_province', 'bank_branch', 'bank_account']);
    }
])
->asArray()
->all();
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Copy after login

I looked at the query SQL and it turned out to be

select * from ....
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Copy after login

What a scam? Or is there something wrong with the method I'm using? ?

Reply content:

When the tables are not connected, you can check individual fields.

$user->find()->select(['userid', 'username'])->asArray()->all();
Copy after login
Copy after login

Then SQL is also normal

select userid, username from ...
Copy after login
Copy after login

But when joining tables. . .

$user->find()
->joinWith([
    'account' => function ($object) {
        $object->select(['account_name', 'account_level', 'account_status']);
    },
    'bank' => function ($object) {
        $object->select(['bank_name', 'bank_province', 'bank_branch', 'bank_account']);
    }
])
->asArray()
->all();
Copy after login
Copy after login

I looked at the query SQL and it turned out to be

select * from ....
Copy after login
Copy after login

What a scam? Or is there something wrong with the method I'm using? ?

You should write select outside joinWith:

$user->find()->select(['account_name', 'account_level', 'account_status', 'bank_name', 
'bank_province', 'bank_branch', 'bank_account'])
->joinWith(['account', 'bank'])
->asArray()
->all();
Copy after login

Of course it will be select * Because your operation only specifies the select field when querying the related table.

So I still specify it individually as you did Just select

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