Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Is there a more efficient way to do this without counting twice?
i.e returning a warning image string if the count is 0 otherwise return the count.
IF(
((SELECT COUNT(pc.category_id) from product_categories pc WHERE pc.product_id = cp.ItemID) > 0),
(SELECT COUNT(pc.category_id) from product_categories pc WHERE pc.product_id = cp.ItemID),
"<img src=\"_imgs/warning.png\" alt=\"warning\"/>"
) AS category_count
Use variable for it. (But I think its result may be cached by query cache.)