oracle10g - Oracle SQL query to return row values if all rows have some value in column after grouping by another column -

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I have some data that looks like this - 

  Cola ColB ColC ID1 1 '1 -1' ID 2 1 '2-1' ID 2 0 '2-2' ID 3 1 '3-1' ID 3 1 '3-2   
 Give me a query (For Oracle 10G) that group gets the rows from the value of the cola and only then the values ​​of the calls are returned if all the rows in the group have ColB = 1, so for the given data I want the output Anyone -  
  "1-1" "3-1,3-2"   
 How to write a question like this?  
 Thank you!   
 
 
  select cola, column_name WHERE colb = 1 group from wm_concat (ColC) From;  Edit  - You can also use the LISTAGG total function like this:  
  SELECT colA, LISTAGG (colc, ',') inside the group ( Order by CLC) from table_name to WHERE colb = 1 group by cola;   
 I recommend using LISTAGG as it is documented by Oracle, while wm_concat is not.  
  Edit:  If so, you do not want to show lines like ID2 because it is Colb = 0, or, colb! There is a line with = 1, you can:  
  SELECT colA, from wm_concat (ColC) to table_name t1 where not found (select 1 from table 1, where colle! = 1 - Or, you can make colb = 0 and t2. cola = T. 1. cola) by cola cola

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