interval_abs():

Add C comment about why there is no interval_abs():  it is unclear what
value to return:

    http://archives.postgresql.org/pgsql-general/2009-10/msg01031.php
    http://archives.postgresql.org/pgsql-general/2009-11/msg00041.php

diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index b4059d4a41daa1dba706de76a0571a4dc2ffa465..fa3a27b8f4286b865b622f9e1210b8aad0ed10ce 100644 (file)
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -2779,6 +2779,12 @@ interval_mi(PG_FUNCTION_ARGS)
    PG_RETURN_INTERVAL_P(result);
 }
 
+/*
+ *  There is no interval_abs():  it is unclear what value to return:
+ *    http://archives.postgresql.org/pgsql-general/2009-10/msg01031.php
+ *    http://archives.postgresql.org/pgsql-general/2009-11/msg00041.php
+ */
+ 
 Datum
 interval_mul(PG_FUNCTION_ARGS)
 {