How to get result without single cotes in ''Cast(Multiset( '' Result.

Question

select cast(multiset(select column_name
from user_tab_columns
where table_name = 'DAILY_PRODN_MIS'
and column_name like '%STOCK%'
order by column_name) as tab_type) result from dual;
RESULT
TAB_TYPE('BAGS_STOCK', 'BLUE_DUST_STOCK', 'CEMENT_STOCK', 'CEMENT_STOCK_33', 'CEMENT_STOCK_43', 'CEMENT_STOCK_53', 'CK_ADJ', 'COAL_IND_D_STOCK', 'COAL_IND_D_STOCK_ADJ', 'COAL_IND_E_STOCK', 'COAL_IND_E_STOCK_ADJ', 'COAL_IND_F_STOCK','OCK_ADJ', 'MTD_COAL_IMP_D_STOCK_ADJ', 'MTD_COAL_IMP_E_STOCK_ADJ', 'MTD_COAL_IND_A_STOCK_ADJ', 'MTD_COAL_IND_B_STOCK_', 'YTD_COAL_IMP_B_STOCK_ADJ', 'YTD_COAL_IMP_C_STOCK_ADJ', 'YTD_COAL_IMP_D_STOCK_ADJ', 'YTD_COAL_IMP_E_STOCK_ADJ')
How can i get result without single cotes for each column.

Answer 1

Your query currently returns a collection type (tab_type) whereas it appears you want to return a delimited string.
There are actually quite a few ways to achieve this - with your own function, with a user-defined aggregate functions (e.g. Tom Kyte's stragg), with the MODEL clause or with CONNECT BY, e.g.
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
SQL> SELECT table_name,
  2         SUBSTR (MAX (SYS_CONNECT_BY_PATH (
  3            column_name, ',')), 2) column_names
  4  FROM  (SELECT table_name, column_name,
  5                ROW_NUMBER () OVER (
  6                   PARTITION BY table_name
  7                   ORDER BY column_id) column_order
  8         FROM   user_tab_columns
  9         WHERE  table_name = 'BANK_ACCOUNT'
10         AND    column_name LIKE '%U%') utc
11  START WITH column_order = 1
12  CONNECT BY column_order = PRIOR column_order + 1
13  AND    table_name = PRIOR table_name
14  GROUP BY   table_name;
TABLE_NAME           COLUMN_NAMES
BANK_ACCOUNT         ACCOUNT_NAME,ACCOUNT_NUMBER
SQL>