为什么我会收到以下错误？
Error starting at line 1 in command:
select FUNC from dual
Error report:
SQL Error: ORA-14551: cannot perform a DML operation inside a query
ORA-06512: at "ANONYMOUS.FUNC", line 15
14551. 00000 - "cannot perform a DML operation inside a query "
*Cause: DML operation like insert, update, delete or select-for-update
cannot be performed inside a query or under a PDML slave.
*Action: Ensure that the offending DML operation is not performed or
use an autonomous transaction to perform the …