如何根据查询在SSRS中创建= CountDistinct

Question

我需要帮助根据此查询在SSRS中创建表达式：

SELECT COUNT(DISTINCT person_id) FROM person_table
WHERE (employed = 'Y' or title = 1) 
or    (start_date = '' or start_date = '00000000'
or     start_date > CONVERT    (VARCHAR,GETDATE(),112)) 

到目前为止我所拥有的只是这个

=CountDistinct(IIf(Fields!no_unresolved_allergies_ind.Value = "Y",Fields!MRN.Value,Nothing))

Answer 1

由于信息有限，我将尝试这些方法

User model
#Returns the total mensal cost
def max_mensal
  animals.sum(:mensal_cost)
end

Animal model
#Validates the mensal ammount

validate :check_form_mammount

def check_for_mammount
  if user_id && user.max_mensal > (value here)
  errors.add(:mensal_cost, message: 'msg here')
end