Can't believe it takes me so long to do a so easy thing in sql.
I have to do something to make myself the best. I forgot so much... Luckily I still can write something. ^_^.
A working guy beside me want me to help him to write a query. He want to select fields in a table which has one to many relation in the field in the same table. Suppose
| ClinicAddress | Clinic |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 4 |
select field clinic which has more than one ClinicAddress. One clinic has more than one clinicAddress. How to do this in Query Analyzer.
sql query is below.
clinic, COUNT(*) as countNumber
clinic_address
clinic
> 1
countNumber
Use HAVING clause to make it. Easy? But why I forgot it??? What a shame to me!