| B | ↘ | C | Column got worse |
| ⇢ | A | Column::setVirtual() added | |
| ⇢ | A | Column::setStored() added | |
| ⇢ | A | Column::setExpression() added | |
| ⇢ | A | Column::getVirtual() added | |
| ⇢ | A | Column::isVirtual() added | |
| ⇢ | A | Column::getStored() added | |
| ⇢ | A | Column::isStored() added | |
| ⇢ | A | Column::getExpression() added |