}
int colIndex = table.getColumnIndex(oldCol.getName().name);
// 0 if only metadata change is required ; 1 if only check is required ; -1 if data conversion is required
int checkData = newType.canMoveFrom(oldType);
if (checkData == 0) {
if (newCol.isIdentity()) {
if (!(oldCol.isIdentity() || !oldCol.isNullable()
|| oldCol.isPrimaryKey())) {