创建测试表及数据
create table test(name varchar2(10)); insert into test values ('2-15');insert into test values ('2-33');insert into test values ('2-3');insert into test values ('12-8');insert into test values ('12-22');insert into test values ('12-3');
执行
select name,substr(name,1,instr(name,'-')-1) 前,substr(name,instr(name,'-')+1,length(name)-instr(name,'-')) 后 from test
截图
