sql code to calc avg duration grouped by decade. Decade start/end dates come
from a table 'decades' that must exist in the database
Usage
avg_duration_by_decade_sql(mhw_table, use_end_date = FALSE)
Arguments
- mhw_table
character name of scenario table to use
- use_end_date
boolean TRUE: use waves ending in the decade; FALSE: use waves starting in the deacde
Value
character sql code to run