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listagg_clob

extends listagg beyond its varchar2 limits

"Standard" LISTAGG takes varchar2 and returns a concatenation that may be longer than the limit of varchar2 which can be problematic. LISTAGG_CLOB takes varchar2 inputs and returns a clob to workaround the limitation of the output length.

Installation Guide

@@listagg_clob_t_ts.sql
@@listagg_clob_t_tb.sql
@@listagg_clob.sql

Sample Usage

SQL> select listagg_clob(owner)
  2  from dba_objects
  3  where rownum <= 10;

LISTAGG_CLOB(OWNER)
-----------------------------------------------
SYS,SYS,SYS,SYS,SYS,SYS,SYS,SYS,SYS,SYS

1 row selected.

Usual stuff

This software comes WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

Acknowledgements to the ground laying work by Anton Scheffer, via https://technology.amis.nl/2015/03/13/using-an-aggregation-function-to-query-a-json-string-straight-from-sql/