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-rw-r--r--src/test/regress/sql/identity.sql8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/test/regress/sql/identity.sql b/src/test/regress/sql/identity.sql
index 8dcfdf3dc15..4b03d24effe 100644
--- a/src/test/regress/sql/identity.sql
+++ b/src/test/regress/sql/identity.sql
@@ -254,3 +254,11 @@ CREATE TABLE itest_child PARTITION OF itest_parent (
f3 WITH OPTIONS GENERATED ALWAYS AS IDENTITY
) FOR VALUES FROM ('2016-07-01') TO ('2016-08-01'); -- error
DROP TABLE itest_parent;
+
+
+-- test that sequence of half-dropped serial column is properly ignored
+
+CREATE TABLE itest14 (id serial);
+ALTER TABLE itest14 ALTER id DROP DEFAULT;
+ALTER TABLE itest14 ALTER id ADD GENERATED BY DEFAULT AS IDENTITY;
+INSERT INTO itest14 (id) VALUES (DEFAULT);