Question

我有以下SQL查询，我希望将public.account.phone_number的值用于子查询的LIKE子句。

不幸的是，当我替换数据库中的电话号码total_responses '%public.account.phone_number'时查询为SELECT public.email_account.email, public.account.password, public.ad.city, public.ad.state, public.ad.age, public.ad.hotel, public.ad.insert_time, public.ad.ad_url, public.ad.active, public.ad.on_page, public.ad.paid, public.account.phone_number, (SELECT COUNT(*) FROM public.match where match_id LIKE '%public.account.phone_number') AS total_responses FROM public.account INNER JOIN public.ad ON public.account.id = public.ad.account_id INNER JOIN public.email_account ON public.account.email_account_id = public.email_account.id ORDER BY ad.active ASC, on_page DESC返回0时，某些内容无法正常工作。

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Answer 1

我猜你想要与外部字段phone_number进行连接。

试试这个：

SELECT
    public.email_account.email,
    public.account.password,
    public.ad.city,
    public.ad.state,
    public.ad.age,
    public.ad.hotel,
    public.ad.insert_time,
    public.ad.ad_url,
    public.ad.active,
    public.ad.on_page,
    public.ad.paid,
    public.account.phone_number,
    (SELECT COUNT(*) FROM public.match where match_id LIKE '%' || public.account.phone_number) AS total_responses
FROM
    public.account
    INNER JOIN public.ad
     ON public.account.id = public.ad.account_id
    INNER JOIN public.email_account
     ON public.account.email_account_id = public.email_account.id
ORDER BY
    ad.active ASC,
    on_page DESC

在select子句中使用子查询

1 个答案: