From 78b674ba35d35836b7ff6eac9e22d92ab5e3f2bd Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Fri, 18 May 2001 16:02:01 +0000
Subject: [PATCH] Add regression test to catch future breakage of
avg(interval). This aggregate seems uniquely fragile, because it's the only
one with an agginitval that's at all likely to change in format.
---
src/test/regress/expected/interval.out | 9 +++++++++
src/test/regress/sql/interval.sql | 6 ++++++
2 files changed, 15 insertions(+)
diff --git a/src/test/regress/expected/interval.out b/src/test/regress/expected/interval.out
index 8a4eb275906..ed16ada224f 100644
--- a/src/test/regress/expected/interval.out
+++ b/src/test/regress/expected/interval.out
@@ -212,3 +212,12 @@ SELECT '' AS ten, INTERVAL_TBL.*;
| @ 5 mons 12 hours
(10 rows)
+-- test avg(interval), which is somewhat fragile since people have been
+-- known to change the allowed input syntax for type interval without
+-- updating pg_aggregate.agginitval
+select avg(f1) from interval_tbl;
+ avg
+-------------------------------------------------
+ @ 4 years 1 mon 10 days 4 hours 18 mins 23 secs
+(1 row)
+
diff --git a/src/test/regress/sql/interval.sql b/src/test/regress/sql/interval.sql
index 945eb08d605..aa14cd3b094 100644
--- a/src/test/regress/sql/interval.sql
+++ b/src/test/regress/sql/interval.sql
@@ -60,3 +60,9 @@ SELECT '' AS fortyfive, r1.*, r2.*
SET DATESTYLE = 'postgres';
SELECT '' AS ten, INTERVAL_TBL.*;
+
+-- test avg(interval), which is somewhat fragile since people have been
+-- known to change the allowed input syntax for type interval without
+-- updating pg_aggregate.agginitval
+
+select avg(f1) from interval_tbl;
--
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