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.
Why would the following query not increment seq?
SELECT @sq :=if(@previous=uid,@sq,0)+1 as seq
,@previous:=uid as user
FROM test
Result:
seq user
1 111
1 111
1 111
1 222
1 222
1 222
You forgot to do
set @sq:=0,@previous:=0at the front?Alternatively you can always join it in to the query: