MySQL给出了奇怪的错误

Question

以下查询有什么问题：

SELECT * FROM forms 
LEFT JOIN form_fields ON forms.id = form_field.parent_id 
LEFT JOIN form_options ON form_field.id = form_options.parent_id 
WHERE forms.name = activities

MySQL说＆＃39;未知的专栏＆＃39;＆＃39;＆＃39;显然，forms.name应该被视为列名

Answer 1

我认为你只是错过了引号，试试这个：

SELECT * FROM forms 
LEFT JOIN form_fields ON forms.id = form_field.parent_id 
LEFT JOIN form_options ON form_field.id = form_options.parent_id 
WHERE forms.name = 'activities'