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improved doc [skip ci]

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Qiang Xue
2014-11-23 13:14:42 -05:00
parent 646f233f48
commit aa92512974
1 changed files with 4 additions and 2 deletions
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docs/guide/db-active-record.md
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@ -198,8 +198,10 @@ $customer = Customer::findAll([
]); ]);
``` ```
> Note: Neither `findOne()` nor `one()` adds `LIMIT 1` to the query so if you need "any active customer" > Note: By default neither `findOne()` nor `one()` will add `LIMIT 1` to the query. This is fine and preferred
you should add limit manually i.e. `Customer::find()->where(['status' => Customer::STATUS_ACTIVE])->limit(1)->one();`. if you know the query will return only one or a few rows of data (e.g. if you are querying with some primary keys).
However, if the query may potentially return many rows of data, you should call `limit(1)` to improve the performance.
For example, `Customer::find()->where(['status' => Customer::STATUS_ACTIVE])->limit(1)->one()`.
### Retrieving Data in Arrays ### Retrieving Data in Arrays