Question

HI我是mysql的新手并尝试通过存储过程更新表。我得到了＃34;错过了分号错误。我尝试了所有内容，但我无法理解为什么会发生这种情况。

过程：

DROP PROCEDURE IF EXISTS abc;
use smartdata;
DELIMITER $$

CREATE PROCEDURE abc(IN datasourceId int)
begin

        update DM_Sample_Search_Param_Disposition_Type set DM_Sample_Search_Param_Disposition_Type.Active = 0
        From DM_Sample_Search_Param_Disposition_Type dm_ss_param_cl
        left join DM_Sample_Search_Param dm_ss_param on dm_ss_param_cl.DM_Sample_Search_Param_id =dm_ss_param.DM_Sample_Search_Param_id
        left join DM_Sample_Store dm_ss on dm_ss.DM_Sample_Store_Id=dm_ss_param.DM_Sample_Store_Id
        where dm_ss.Datasource_Id=datasourceId;

end $$
DELIMITER //

近线以下的错误：

set DM_Sample_Search_Param_Disposition_Type.Active = 0

其中＆＃34;活跃＆＃34;在桌子上是tinyint。请帮忙

Answer 1

MySQL使用与MSSQL不同的语法进行更新：update ... join .. set ... where ...

update DM_Sample_Search_Param_Disposition_Type dm_ss_param_cl
left join DM_Sample_Search_Param dm_ss_param on dm_ss_param_cl.DM_Sample_Search_Param_id =dm_ss_param.DM_Sample_Search_Param_id
left join DM_Sample_Store dm_ss on dm_ss.DM_Sample_Store_Id=dm_ss_param.DM_Sample_Store_Id
set DM_Sample_Search_Param_Disposition_Type.Active = 0
where dm_ss.Datasource_Id=datasourceId;

Answer 2

错误的连接表sintax

     /**
     * Find the amount of points each boat in the race should have
     *
     * This method will assign points and, in the event of a tie,
     * average them.
     *
     * @param $results
     *
     * @return array
     */
    public function race_points($results)
    {
        $points = 0;
        $results_with_points = array();

        //assign incremental amounts of points to each boat
        foreach ($results AS $result) {
            //increment points by one for each position
            $points++;
            $result->points = $points;

            //add result back to array;
            $results_with_points[] = $result;
        }

        $results_with_points = $this->break_race_ties($results_with_points);

        return $results_with_points;
    }

    /**
     * Find any ties and average their points
     *
     * @param $results
     *
     * @return mixed
     */
    protected function break_race_ties($results)
    {
        $ties = $this->find_race_ties($results);

        if (!empty($ties)) {
            //looks like there are tied results, average the points and assign them

            foreach ($ties AS $tie) {
                $points = $this->average_array_values($tie['points']);

                foreach ($tie['id'] AS $id) {
                    $results[ $id ]->points = $points;
                }
            }
        }

        return $results;
    }

    /**
     * Determine if any ties exist and get some information about them
     *
     * Finds any existing ties in the array of results and gets,
     * their element id and the points of each tying boat.
     *
     * @param $results
     *
     * @return array
     */
    protected function find_race_ties($results)
    {
        $previous_id = NULL;
        $previous_points = NULL;
        $previous_time = NULL;
        $ties = array();

        foreach ($results AS $id => $result) {

            if ($previous_time === $result->lap_time) {

                // Create empty array if required, so we don't push to NULL
                if (!isset($ties[ $previous_time ])) {
                    $ties[ $previous_time ]['points'] = array();
                    $ties[ $previous_time ]['id'] = array();
                }

                // Add each individual value to the array containing duplicates.
                // $previous_time is used as a key because it's identical when
                // it needs to be, meaning points and ids are grouped.
                array_push($ties[ $previous_time ]['points'], $result->points, $previous_points);
                array_push($ties[ $previous_time ]['id'], $id, $previous_id);

                // Remove duplicate values.
                $ties[ $previous_time ]['points'] = array_unique($ties[ $previous_time ]['points']);
                $ties[ $previous_time ]['id'] = array_unique($ties[ $previous_time ]['id']);
            }

            //Set these values for the next iteration to compare against
            $previous_id = $id;
            $previous_points = $result->points;
            $previous_time = $result->lap_time;
        }

        return $ties;
    }

    protected function average_array_values($values)
    {
        $number_of_elements = count($values);
        $total_points = array_sum($values);

        return $total_points / $number_of_elements;
    }

在存储过程mysql workbench

2 个答案: