语法错误，意外的tCONSTANT

Question

任何人都可以解释一下我的问题：

ActiveRecord::Base.connection.select_values('SELECT c.value FROM custom_values c,
time_entries p, custom_fields cf  where  c.customized_type = 'TimeEntry' 
and p.id = c.customized_id and c.custom_field_id = cf.id 
and cf.type = 'TimeEntryCustomField' and cf.name = 'Reference TS Client' 
and p.id = '+ log.user.id.to_s +' ;')

我只是因为＆＃34; c.customized_type＆＃34;而得到此错误。可能是什么问题？

Answer 1

您正在使用＆＃39;关闭字符串。和分号，试试这个：

ActiveRecord::Base.connection.select_values("SELECT c.value FROM custom_values c,
time_entries p, custom_fields cf  where  c.customized_type = 'TimeEntry' 
and p.id = c.customized_id and c.custom_field_id = cf.id 
and cf.type = 'TimeEntryCustomField' and cf.name = 'Reference TS Client' 
and p.id = ?", log.user.id.to_s)