On 2016/12/20 12:59, Robert Haas wrote:
> On Sun, Dec 18, 2016 at 10:00 PM, Amit Langote
> <langote_amit...@lab.ntt.co.jp> wrote:
>> Here are updated patches including the additional information.
> 
> Thanks.  Committed 0001.  Will have to review the others when I'm less tired.

Thanks!

> BTW, elog() is only supposed to be used for can't happen error
> messages; when it is used, no translation is done.  So this is wrong:
> 
>     if (skip_validate)
>         elog(NOTICE, "skipping scan to validate partition constraint");

You're right.  I was using it for debugging when I first wrote that code,
but then thought it would be better to eventually turn that into
ereport(INFO/NOTICE) for the final submission, which I missed to do. Sorry
about that.  Here's a patch.

Thanks,
Amit
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 1c219b03dd..6a179596ce 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -13297,8 +13297,10 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
 		}
 	}
 
+	/* It's safe to skip the validation scan after all */
 	if (skip_validate)
-		elog(NOTICE, "skipping scan to validate partition constraint");
+		ereport(INFO,
+				(errmsg("skipping scan to validate partition constraint")));
 
 	/*
 	 * Set up to have the table to be scanned to validate the partition
diff --git a/src/test/regress/expected/alter_table.out b/src/test/regress/expected/alter_table.out
index 99e20eb922..2a324c0b49 100644
--- a/src/test/regress/expected/alter_table.out
+++ b/src/test/regress/expected/alter_table.out
@@ -3179,7 +3179,7 @@ ALTER TABLE list_parted2 ATTACH PARTITION part_3_4 FOR VALUES IN (3, 4);
 ALTER TABLE list_parted2 DETACH PARTITION part_3_4;
 ALTER TABLE part_3_4 ALTER a SET NOT NULL;
 ALTER TABLE list_parted2 ATTACH PARTITION part_3_4 FOR VALUES IN (3, 4);
-NOTICE:  skipping scan to validate partition constraint
+INFO:  skipping scan to validate partition constraint
 -- check validation when attaching range partitions
 CREATE TABLE range_parted (
 	a int,
@@ -3204,7 +3204,7 @@ CREATE TABLE part2 (
 	b int NOT NULL CHECK (b >= 10 AND b < 18)
 );
 ALTER TABLE range_parted ATTACH PARTITION part2 FOR VALUES FROM (1, 10) TO (1, 20);
-NOTICE:  skipping scan to validate partition constraint
+INFO:  skipping scan to validate partition constraint
 -- check that leaf partitions are scanned when attaching a partitioned
 -- table
 CREATE TABLE part_5 (
@@ -3219,7 +3219,7 @@ ERROR:  partition constraint is violated by some row
 DELETE FROM part_5_a WHERE a NOT IN (3);
 ALTER TABLE part_5 ADD CONSTRAINT check_a CHECK (a IN (5)), ALTER a SET NOT NULL;
 ALTER TABLE list_parted2 ATTACH PARTITION part_5 FOR VALUES IN (5);
-NOTICE:  skipping scan to validate partition constraint
+INFO:  skipping scan to validate partition constraint
 -- check that the table being attached is not already a partition
 ALTER TABLE list_parted2 ATTACH PARTITION part_2 FOR VALUES IN (2);
 ERROR:  "part_2" is already a partition
-- 
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