我有一個表activity_types,其中包含活動的文本,例如
New project has been assigned to {user} with name {project}
New discussion has been posted by {client} on {project}
Project {project} has been closed by {user}
A draft has been approved by {client} on {project}
等Mysql替換函數返回null
我對這些文本的ID已被填充另一個表。
現在,我的要求是內{}與像{}客戶應與客戶名稱所取代他們的實際值,(項目)應與項目名稱替換替換文本來獲取這些。
我已經使用嵌套取代MySQL的函數嘗試,但它返回空字符串。這裏是我的查詢
SELECT REPLACE(REPLACE(REPLACE(att.type_text, '{project}', p.project_business_name), '{user}', u.user_fullname), '{client}', c.client_name) AS activity, a.*
FROM activities a
LEFT JOIN activity_types AS att ON att.type_id = a.activity_type
LEFT JOIN users u ON u.user_id = a.activity_user AND a.activity_user IS NOT NULL
LEFT JOIN projects p ON p.project_id = a.activity_project AND p.project_is_removed = '0'
LEFT JOIN clients c ON c.client_id = a.activity_client AND a.activity_client IS NOT NULL;
的問題是,如果我取代靜態文本的c.client_name它工作正常,但是當我更換c.client_name靜態字符串時,它在沒有活動{客戶端返回null }。任何猜測我在哪裏做錯了?
完美...日Thnx :) –
歡迎您@ShayanHusaini! –