DECODE/INSTR based on QUERY for SUBSTRING

Question

I am trying to write a function that can take a STRING and perform a DECODE on it by doing an INSTR for a value from a TABLE.
MYTABLE
VALUES               
22XXXXXMNTSTT_       
72XXXXXMNTSTT_       
26XXXXXMNTSTT_       
22XXXXXMNTHRSG       
32XXXXXMNTHRSG       
62XXXXXMNTBC__  
DECODE_LIST_TABLE    
SEARCH_VAL    TRANSLATE
MNTHRSG        306    
MNTBC            336     
MNTSTT            393   
MNTWTR            364 
I WANT BACK          
393
393
393
306
336
TRYING:
SELECT VALUES, INSTR( VALUES, SELECT SEARCH_VAL FROM DECODE_LIST_TABLE)>0  THEN ( SELECT TRANSLATE  FROM DECODE_LIST_TABLE WHERE ???????? )          
FROM MYTABLENot sure how to finish the WHERE and if this is even doable with the approach I am taking?
ANy help, greatly appreciated.
Miller

Answer 1

this?
SQL> ed
Wrote file afiedt.buf
  1  WITH my_tab AS
  2    (SELECT  '72XXXXXMNTSTT_' val FROM dual
  3     UNION ALL
  4    SELECT   '26XXXXXMNTSTT_ '  FROM dual
  5     UNION ALL
  6    SELECT    '22XXXXXMNTHRSG '   FROM dual),
  7   list_tab AS
  8      (SELECT 'MNTHRSG' s_val, 306 tr  FROM dual
  9     UNION ALL
10    SELECT  'MNTBC',  336   FROM dual
11     UNION ALL
12    SELECT  'MNTWTR', 364    FROM dual
13    UNION ALL
14    SELECT  'MNTSTT', 393   FROM dual)
15  -------- end you data<<<<<<<<<<<<<<<<<<<------ ignore with clause that for sample data
16  SELECT val,tr FROM my_tab,list_tab
17* WHERE INSTR(val,s_val)>0
SQL> /
VAL                     TR
22XXXXXMNTHRSG         306
72XXXXXMNTSTT_         393
26XXXXXMNTSTT_         393format
Message was edited by:
devmiral