| 7 | === Tips === |
| 8 | ''' You're only allowed one source ''', but you should find everything you need in that source. |
| 9 | ---- |
| 10 | |
| 11 | ''' Only drill down if you need to. ''' You'll see the same source and field names listed many times as you drill down, this is to ensure you can access what you need to regardless of the source you start with. The data in the fields: |
| 12 | {{{ |
| 13 | Circulation :: Circulating Item |
| 14 | }}} |
| 15 | |
| 16 | and |
| 17 | |
| 18 | {{{ |
| 19 | Circulation -> Item -> Circulation :: Circulating Item |
| 20 | }}} |
| 21 | |
| 22 | is the same and you can use either one in an expression without changing the result. You should use the first one if you can though, because it's shorter "Source Specifier" means it's less work for the db to pull the information out. |
| 23 | ---- |