带有子查询语法错误的redshift更新查询

Question

update ca_ger.cln_trans_base 
    set stock_age=cast(week_starting)-b.min_date 
from (
  select pon+season_code as p,min(cast(week_starting as date)) as min_date 
  from ca_ger.cln_trans_base a 
  where a.gross_sales_value>0 
    and aseason_code!='0' 
  group by pon+season_code
) as b;

what can be wrong with the above syntax?

Answer 1

Here's the problem cast(week_starting) . You need to cast it as something.