In this blog post, you’ll learn more about the Sybase Error Column %2 can not be altered because it participates in join %3. %1 and the reason for receiving this error
Sybase SQL Error Message
Column %2 can not be altered because it participates in join %3. %1
Reason for this Error
A column/field that participates in a join cannot be altered. Joins on this field must be deleted before an ALTER can be performed.