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<?php

declare(strict_types=1);

namespace Doctrine\DBAL\Driver;

/**
 * Driver-level statement execution result.
 */
interface Result
{
    /**
     * Returns the next row of the result as a numeric array or FALSE if there are no more rows.
     *
     * @return list<mixed>|false
     *
     * @throws Exception
     */
    public function fetchNumeric(): array|false;

    /**
     * Returns the next row of the result as an associative array or FALSE if there are no more rows.
     *
     * @return array<string,mixed>|false
     *
     * @throws Exception
     */
    public function fetchAssociative(): array|false;

    /**
     * Returns the first value of the next row of the result or FALSE if there are no more rows.
     *
     * @throws Exception
     */
    public function fetchOne(): mixed;

    /**
     * Returns an array containing all of the result rows represented as numeric arrays.
     *
     * @return list<list<mixed>>
     *
     * @throws Exception
     */
    public function fetchAllNumeric(): array;

    /**
     * Returns an array containing all of the result rows represented as associative arrays.
     *
     * @return list<array<string,mixed>>
     *
     * @throws Exception
     */
    public function fetchAllAssociative(): array;

    /**
     * Returns an array containing the values of the first column of the result.
     *
     * @return list<mixed>
     *
     * @throws Exception
     */
    public function fetchFirstColumn(): array;

    /**
     * Returns the number of rows affected by the DELETE, INSERT, or UPDATE statement that produced the result.
     *
     * If the statement executed a SELECT query or a similar platform-specific SQL (e.g. DESCRIBE, SHOW, etc.),
     * some database drivers may return the number of rows returned by that query. However, this behaviour
     * is not guaranteed for all drivers and should not be relied on in portable applications.
     *
     * If the number of rows exceeds {@see PHP_INT_MAX}, it might be returned as string if the driver supports it.
     *
     * @return int|numeric-string
     *
     * @throws Exception
     */
    public function rowCount(): int|string;

    /**
     * Returns the number of columns in the result
     *
     * @return int The number of columns in the result. If the columns cannot be counted,
     *             this method must return 0.
     *
     * @throws Exception
     */
    public function columnCount(): int;

    /**
     * Discards the non-fetched portion of the result, enabling the originating statement to be executed again.
     */
    public function free(): void;
}