当我运行此查询时：
Create table ACCT_MSTR
("Acct_no" varchar2 (10) NOT NULL PRIMARY KEY,
"SF_no" varchar2 (10),
"LF_no" varchar2 (10),
"Branch_no" varchar2 (10),
"Intro_Cust_no" varchar2 (10),
"Intro_Acct_no" varchar2 (10),
"Intro_sign" varchar2 (1),
"Type" Varchar2 (2),
"Opr_mode" varchar2 (2),
"Cust_accut_type" varchar2 (4),
"Title" varchar2 (30),
"Corp_Cust_no" varchar2 (10),
"Aplndt" Date,
"Opendt" Date,
"Veri_Emp_no" VARCHAR2 (10),
"Veri_sign" varchar2 (1),
"Manager_sign" varchar2 (1),
"Curbal" NUMBER(8,2),
"Status" varchar2 (1) DEFAULT (A),
CONSTRAINT Am_Bn_fk FOREIGN KEY("Branch_no") references BRANCH_MSTR ("Branch_no"),
CONSTRAINT Am_Icn_fk FOREIGN KEY("Intro_Cust_no") references CUST_MSTR ("Cust_no"),
CONSTRAINT Am_Ian_fk …