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-rw-r--r--src/backend/commands/tablecmds.c4
-rw-r--r--src/test/regress/expected/inherit.out17
-rw-r--r--src/test/regress/sql/inherit.sql9
3 files changed, 30 insertions, 0 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 2a56a4357c9..5ccd0eec1c7 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -7077,6 +7077,10 @@ ATExecAddColumn(List **wqueue, AlteredTableInfo *tab, Relation rel,
colDef->colname, RelationGetRelationName(rel))));
table_close(attrdesc, RowExclusiveLock);
+
+ /* Make the child column change visible */
+ CommandCounterIncrement();
+
return InvalidObjectAddress;
}
}
diff --git a/src/test/regress/expected/inherit.out b/src/test/regress/expected/inherit.out
index 0f1aa831f64..56a40d50f90 100644
--- a/src/test/regress/expected/inherit.out
+++ b/src/test/regress/expected/inherit.out
@@ -1088,6 +1088,23 @@ Inherits: inht1,
inhs1
DROP TABLE inhts;
+-- Test for adding a column to a parent table with complex inheritance
+CREATE TABLE inhta ();
+CREATE TABLE inhtb () INHERITS (inhta);
+CREATE TABLE inhtc () INHERITS (inhtb);
+CREATE TABLE inhtd () INHERITS (inhta, inhtb, inhtc);
+ALTER TABLE inhta ADD COLUMN i int;
+NOTICE: merging definition of column "i" for child "inhtd"
+NOTICE: merging definition of column "i" for child "inhtd"
+\d+ inhta
+ Table "public.inhta"
+ Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
+--------+---------+-----------+----------+---------+---------+--------------+-------------
+ i | integer | | | | plain | |
+Child tables: inhtb,
+ inhtd
+
+DROP TABLE inhta, inhtb, inhtc, inhtd;
-- Test for renaming in diamond inheritance
CREATE TABLE inht2 (x int) INHERITS (inht1);
CREATE TABLE inht3 (y int) INHERITS (inht1);
diff --git a/src/test/regress/sql/inherit.sql b/src/test/regress/sql/inherit.sql
index f7b4062ce51..971aac54fda 100644
--- a/src/test/regress/sql/inherit.sql
+++ b/src/test/regress/sql/inherit.sql
@@ -372,6 +372,15 @@ ALTER TABLE inhts RENAME d TO dd;
DROP TABLE inhts;
+-- Test for adding a column to a parent table with complex inheritance
+CREATE TABLE inhta ();
+CREATE TABLE inhtb () INHERITS (inhta);
+CREATE TABLE inhtc () INHERITS (inhtb);
+CREATE TABLE inhtd () INHERITS (inhta, inhtb, inhtc);
+ALTER TABLE inhta ADD COLUMN i int;
+\d+ inhta
+DROP TABLE inhta, inhtb, inhtc, inhtd;
+
-- Test for renaming in diamond inheritance
CREATE TABLE inht2 (x int) INHERITS (inht1);
CREATE TABLE inht3 (y int) INHERITS (inht1);