使用以下语句更新:
alter table STORE_GOODS_BAR alter column S_BARCODE type VARCHAR(40);
错误提示:
Unsuccessful metadata update
MODIFY RDB$RELATION_FIELDS failed
action cancelled by trigger (1) to preserve data integrity
Cannot update index segment used by an Integrity Constraint
Statement: alter table STORE_GOODS_BAR alter column S_BARCODE type VARCHAR(40)