Help with a CASE!!!

Question

I did started a thread about the same problem this morning but no one couldn't help.
I tried to write it my self , well, still not working out. When i try to ran it, it just freezes........ORA-01652: unable to extend temp segment by 64 in tablespace TEMP
Can someone please see where is my problem with CASE..Im trying to put a case statment into WHERE.........
All I want is if the gl_tr_type = 'SO' then execute the rest in the case statment if the transaction is not 'SO' or 'WE' then cust_name would be blank.......If it's blank then i need N/A inserted there
This is what i need
WHEN gl_tr_type = 'SO' and a.gl_doc = inv_nbr
AND h.inv_cust_bill_to_nbr = g.cust_nbr
and
WHEN gl_tr_type = 'WE' and a.gl_doc = inv_code
AND h.inv_cust_bill_to_nbr = g.cust_nbr
Thank-you very much!!!!
SELECT
b.en_ent,
e.sa_sub,
c.cc_cstctr,
d.acct_acc,
b. EN_ENTITY_LNG,
e. SA_SUB_LNG,
c. COST_CTR_LNG,
d. ACCT_ACC_LNG ,
          g. cust_name,
f. FISCAL_MONTH,
f. FISCAL_YEAR_LNG,
d. ACCT_TYPE,
SUM(a.gl_amt)
FROM
F_ACCT_TRX_HIST_STG1 a,
D_ENTITY_STG2 b,
D_COSTCTR_STG2 c,
D_ACCTS_STG2 d,
D_SUBACCTS_STG2 e,
D_PERIOD_STG1 f,
FINMART.D_CUSTOMER g,
DSSMART.F_SALES_INVOICE h
WHERE a.gl_eff_dt BETWEEN '02-april-2007' AND '15-april-2007' AND
a.GL_ENT = b.EN_ENT AND
c.CC_CSTCTR = UPPER (a.GL_CC) AND
d.acct_acc = a.gl_acc AND
e.sa_sub = a.gl_sa AND
a.gl_eff_dt = f.calendar_date AND
a.gl_doc =
CASE WHEN a.gl_tr_type = 'SO'
AND h.inv_cust_bill_to_nbr = g.cust_nbr
THEN h.inv_nbr
END
GROUP BY b.EN_ENT, e.sa_sub, c.cc_cstctr, d.acct_acc,
b. EN_ENTITY_LNG,
e. SA_SUB_LNG,
c. COST_CTR_LNG,
d. ACCT_ACC_LNG ,
          g. cust_name,
f. FISCAL_MONTH,
f. FISCAL_YEAR_LNG,
d. ACCT_TYPE

Answer 1

Can someone please see where is my problem with
CASE..Im trying to put a case statment into
WHERE.........The select clause has a quite fixed structure, because it descripts the format of the result set, and the use of case statement add some more flexibility to this structure in order to make some changes to the result set that don't go in opposition with the output structure.
SQL> select case
  2     when (rownum < 2) then
  3             1
  4     else
  5             sysdate
  6     end
  7  from dual
  8  connect by level < 5
  9  /
                sysdate
ERROR at line 5:
ORA-00932: inconsistent datatypes: expected NUMBER got DATEThe where clause doesn't have such a fixed structure and has enought expressive power to implement any sort of condition.
In your "case".
WHERE
CASE WHEN (( a.gl_tr_type = 'SO') AND (h.inv_cust_bill_to_nbr = g.cust_nbr)) THEN h.inv_nbr
END
/can be expressed with
WHERE
not(( a.gl_tr_type = 'SO') AND (h.inv_cust_bill_to_nbr = g.cust_nbr)) or (h.inv_nbr)
/here is an example
SQL> select rn,word
  2  from (
  3     select rownum as rn,to_char(to_date(rownum,'j'),'JSP') word
  4     from dual
  5     connect by level <= 10
  6  )
  7  where (not(rn <= 5) or ( length(word)=3 )) /*case  (rn < 5) then ( lenght(word)=3)*/
  8  /
        RN WORD
         1 ONE
         2 TWO
         6 SIX
         7 SEVEN
         8 EIGHT
         9 NINE
        10 TENBye Alessandro