Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

SQL Query to give percentage of colour customers

Avatar of rgss
rgssFlag for Australia asked on
Microsoft AccessSQL
8 Comments1 Solution447 ViewsLast Modified:
I need to create a query to return the number and percentage of total customers that had a colour service in a POS database for a hairdressing salon. The data is in the sale header table: salehdr and the sale lines table: saleline. They are linked by the salehdrID field, with a one to many relationship. The colour services are saleline.categoryID=3. There may be more than one saleline record with categoryID=3 for each salehdr record but in that case it needs to count as 1, not the number of saleline records. Also, any sales that have no services: only catedoryID = 7 shouldn't be included at all.
The results need to be grouped by salehdr.stylistname, to give count and percentage of total for each stylist, as well as for overall. This can be in the same query or two seperate queries.
I need to be able to filter by salehdr.saledate to give results for a lingle day or a range.

I have only basic SQL knowledge so I'm hoping there is an expert that can help.