Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Hello all! I have a MySQL query that is giving me the results that I want, but I'm having difficulty displaying the results in PHP. Here is my SQL statement: SELECT `tkid`,COUNT(*) FROM ...

So I am trying to write an update statement that uses two factors to determine the new value of the field, one of the factors is an aggregate function (COUNT). I get the error: An aggregate may not ...