oracle substr_instr提取以/分隔之後一個/之後的內容

SQL> select * from t_instr;
 
A
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/tymh_images/jc/termSpec/1366181827897iphone520121207144335793_2471.jpg
/tymh_images/jc/termSpec/aaaa520121207144335793_2471.jpg
/x/y/sbc/123.jpg
 
SQL> select a,substr(a,length(a)-instr(reverse(a),'/',1)+2) from t_instr;
 
A                                                                                SUBSTR(A,LENGTH(A)-INSTR(REVER
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/tymh_images/jc/termSpec/1366181827897iphone520121207144335793_2471.jpg          1366181827897iphone520121207144335793_2471.jpg
/tymh_images/jc/termSpec/aaaa520121207144335793_2471.jpg                         aaaa520121207144335793_2471.jpg
/x/y/sbc/123.jpg                                                                 123.jpg
 
SQL>

 

小結:1,reverse

          2,instr

          3,length

          4,substr