public constraints ( string | array $constraints, |
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$constraints | string | array | The constraints for a `ON` clause. |
$context | ||
$options | array | Available options are: - `'prepend'` _boolean|string_: The string to prepend or `false` for no prepending. Defaults to `'ON'`. |
Результат | string | Returns the `ON` clause of an SQL query. |