These days the bug to the project, found that inventory statistics, monthly statistics and other statistics are prone to problems, and now summarize the points based on their experience:
common problem:
1, and detailed field values of the data summary inconsistencies
2, Total number of inconsistencies and detailed summary of the article
analysis:
1, remember the conditions statistical summary and detail inquiry consistent, any statistical conditions put wide, the result is not on the
2, main table and associated with a particular attention to the same table field, will not take a primary table will take a correlation table, data may be inconsistent
One of my formulas:
Many do not pay attention
Many-to-need to be cautious
First here, and then later add more stories, Detailed formulas later.