from dual
connect by level <=
length('A,B,C,D,E') - length(regexp_replace('A,B,C,D,E', ',', '')) + 1;
把字符串按照分割符分解成不同的部分
from dual
connect by level <=
length('A,B,C,D,E') - length(regexp_replace('A,B,C,D,E', ',', '')) + 1;
from dual
connect by level <=
length('A,B,C,D,E') - length(regexp_replace('A,B,C,D,E', ',', '')) + 1;