Question

如果我添加“ AND e.first_name LIKE'％Faith％'”，则这是输出NU1605，但我想要下面查询的相同输出

    SELECT COUNT(sd.id) as 'shortlisted_count',

    sm.filter_details_id as id

    FROM shortlisted_details sd

    INNER JOIN employees e ON e.id= sd.employee_id

    INNER JOIN shortlisted_master sm ON sm.id=sd.shortlisted_master_id

    WHERE sd.is_disqualified=0 AND sm.filter_details_id = 136

        GROUP BY sm.id

Output of query with LIKE

Answer 1

尝试将条件sm.filter_details_id = 136移至第二个联接的ON子句：

SELECT
    COUNT(sd.id) AS shortlisted_count,
    sm.filter_details_id AS id
FROM shortlisted_details sd
INNER JOIN employees e
    ON e.id = sd.employee_id AND
       e.first_name LIKE '%Faith%'
INNER JOIN shortlisted_master sm
    ON sm.id = sd.shortlisted_master_id AND
       sm.filter_details_id = 136
WHERE
    sd.is_disqualified = 0
GROUP BY
    sm.id;

此更改可能解决计数问题的原因是，它防止在WHERE子句中过早地过滤掉记录。

如果我添加LIKE，我希望查询计数的输出相同

1 个答案: