Actually , this is a existing table , around 2.5 TB. We have changed the PI from 4 columns to only 1 column. When we tried to collect old stats, we got this error.
regarding single column and multi column stats : Say i have a multi column stats on col1,col2,col3,col4. All four of them are used in a where clause together.
In TD 13 onwards, if i take single column stats on these columns individually, will that serve the purpose or i still need to take the multi column stats if they are used together in where clause.
We can drop some multi column stats if required for this table as we already have single column stats for some of multi column stats.
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