insert into stud_sname1_417
(id,sname1) select seq_sname1_417,distinct substr(name,1,1) from name;
请问为什么是 missing expression
insert into stud_sname1_417
(id,sname1) select seq_sname1_417,distinct substr(name,1,1) from name;
请问为什么是 missing expression