oracle截取符号后的字符串
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例如:字符串 “AAA-BBB” 截取"AAA" “BBB”
select substr('AAA-BBB',1,instr('AAA-BBB','-',-1)-1) 值 from dual;

select substr('AAA-BBB',instr('AAA-BBB','-',-1)+1) 值 from dual;

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例如:字符串 “AAA-BBB” 截取"AAA" “BBB”
select substr('AAA-BBB',1,instr('AAA-BBB','-',-1)-1) 值 from dual;

select substr('AAA-BBB',instr('AAA-BBB','-',-1)+1) 值 from dual;

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