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-rw-r--r--src/test/regress/sql/btree_index.sql11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/regress/sql/btree_index.sql b/src/test/regress/sql/btree_index.sql
index c60312db2de..c34502249f3 100644
--- a/src/test/regress/sql/btree_index.sql
+++ b/src/test/regress/sql/btree_index.sql
@@ -172,3 +172,14 @@ INSERT INTO delete_test_table SELECT i, 1, 2, 3 FROM generate_series(1,1000) i;
-- Test unsupported btree opclass parameters
create index on btree_tall_tbl (id int4_ops(foo=1));
+
+-- Test case of ALTER INDEX with abuse of column names for indexes.
+-- This grammar is not officially supported, but the parser allows it.
+CREATE INDEX btree_tall_idx2 ON btree_tall_tbl (id);
+ALTER INDEX btree_tall_idx2 ALTER COLUMN id SET (n_distinct=100);
+DROP INDEX btree_tall_idx2;
+-- Partitioned index
+CREATE TABLE btree_part (id int4) PARTITION BY RANGE (id);
+CREATE INDEX btree_part_idx ON btree_part(id);
+ALTER INDEX btree_part_idx ALTER COLUMN id SET (n_distinct=100);
+DROP TABLE btree_part;