Use of hash functions in group by?
You can use xmlagg instead of listagg as a workaround for the listagg limitation:


SQL&gt; set long 10000
SQL&gt; select listagg(id, ',') within group (order by id)
  2    from (select level as id from dual connect by level &lt; 1050)
  3  /
  from (select level as id from dual connect by level &lt; 1050)
                                *
ERROR at line 2:
ORA-01489: result of string concatenation is too long


SQL&gt; select rtrim(xmlagg(xmlelement(e,id,',').extract('//text()') order by id).GetClobVal(),',')
  2    from (select level as id from dual connect by level &lt; 1050)
  3  /

RTRIM(XMLAGG(XMLELEMENT(E,ID,',').EXTRACT('//TEXT()')ORDERBYID).GETCLOBVAL(),','
--------------------------------------------------------------------------------
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,5
7,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,
84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,
108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,
148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,
...