如果满足某一条件,如何更改列及其列名的输出值?假设我有表A,它有3列id,问候语,姓名,姓氏,性别select * from Aselecteverything, if the gender is Male, then set salutation to Mr. else, set salutation to Ms. but then changethe salutation into ali
: articles = articles.annotate(similarity=Greatest('Content', search_term))).filter(similarity__gte=0.03).order_by('-similarity')
if 'a-z' in request.GETa-z=True" type="bu
我试图从Management (ms )中的查询中获得结果。如何在where not子句中使用查询结果,如下所示:fromwhere not exists(select id from res where column1 is null)
查询比较复杂,但我想知道如何使用带有别名的查询(在where子句中使用not )。