one or more columns in the following table do not have statistics
时间: 2024-05-10 11:19:16 浏览: 12
This message typically appears when you are running a query on a table that does not have statistics gathered on one or more of its columns. Statistics are used by the query optimizer to determine the most efficient way to execute a query.
To resolve this issue, you can gather statistics on the columns in question using the ANALYZE command. For example, the following command gathers statistics on all columns in the table:
```
ANALYZE tablename;
```
You can also gather statistics on specific columns using the following command:
```
ANALYZE tablename (column1, column2, ...);
```
Once the statistics have been gathered, the query optimizer should be able to generate a more efficient query plan.