Fix concat_ws() to not insert a separator after leading NULL argument(s).
Per bug #6181 from Itagaki Takahiro. Also do some marginal code cleanup
and improve error handling.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/a5b7640ba0efd670e6f513bf6b5589504a5d5475
Modified Files
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src/backend/utils/adt/varlena.c | 34 +++++++++++++++++++++++-----------
1 files changed, 23 insertions(+), 11 deletions(-)