From e111488b9479ae721e24a0ca42c9838948905a57 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 4 Jun 2026 18:16:15 -0400
Subject: [PATCH v3] Improve the names generated for indexes on expressions.

If the user doesn't specify a name for an index, it's generated
based on the names chosen for the index columns (which the user
has no control over).  For index columns that are just columns
of the base relation, the index column name is the same as the
base column name; but for index columns that are expressions,
it's less clear what to do.  Up to now, what we have done is
equivalent to the heuristics used to choose SELECT output
column names, except that we fall back to "expr" not "?column?"
in the numerous cases that FigureColname doesn't know what
to do with.  This frequently leads to collisions of generated
index names, which we can handle but only at the cost of
user confusion; also there's some risk of concurrent index
creations trying to use the same name.  Let's try to do better.

Messing with the FigureColname heuristics would have a very
large blast radius, since that affects the column headings
that applications see.  That doesn't seem wise, but fortunately
SQL queries are seldom directly concerned with index names.
So we should be able to change the index-name generation rules
as long as we decouple them from FigureColname.

The rule proposed in this patch is to dig through the expression,
extract the names of Vars, the string representations of Consts,
and the names of functions, and run those together with underscores
between.  Other expression node types are ignored but descended
through.  We could work harder by handling more node types, but
it seems like this is likely to be sufficient to arrive at unique
index names in many cases.

Unlike the previous iteration of this patch, I didn't include
operator names in generated index names.  I'm not convinced that's
better, but some other people are awfully resistant to the idea
of having to double-quote index names (despite the existence of
many cases where you'd have to anyway).

I've also chosen to strip Const representations down to only
alphanumeric characters (plus non-ASCII characters, which our
parser treats as alphabetic anyway).  So for example "x + 1.0"
would be represented as "x_10".  This likewise avoids possible
quoting problems.

Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/18959-f63b53b864bb1417@postgresql.org
---
 contrib/seg/expected/partition.out            |   2 +-
 src/backend/commands/indexcmds.c              | 137 +++++++++++++-
 src/backend/parser/parse_target.c             |  16 --
 src/backend/parser/parse_utilcmd.c            |   6 +-
 src/include/nodes/parsenodes.h                |   3 +-
 src/include/parser/parse_target.h             |   1 -
 src/test/regress/expected/alter_table.out     |   6 +-
 src/test/regress/expected/create_index.out    |  18 +-
 src/test/regress/expected/create_table.out    |   4 +-
 .../regress/expected/create_table_like.out    |   8 +-
 src/test/regress/expected/indexing.out        | 168 +++++++++---------
 src/test/regress/expected/inherit.out         | 114 ++++++------
 src/test/regress/expected/rangetypes.out      |   6 +-
 src/test/regress/expected/stats_import.out    |  16 +-
 src/test/regress/sql/create_index.sql         |   2 +-
 src/test/regress/sql/indexing.sql             |  18 +-
 src/tools/pgindent/typedefs.list              |   1 +
 17 files changed, 316 insertions(+), 210 deletions(-)

diff --git a/contrib/seg/expected/partition.out b/contrib/seg/expected/partition.out
index 8b86a406993..1b49b5efac2 100644
--- a/contrib/seg/expected/partition.out
+++ b/contrib/seg/expected/partition.out
@@ -49,7 +49,7 @@ Partitions:
 Partition of: pt FOR VALUES IN (1, 2)
 Partition constraint: ((category IS NOT NULL) AND (category = ANY (ARRAY[1, 2])))
 Indexes:
-    "pt12_expr_idx" btree ((mydouble(category) + 1))
+    "pt12_mydouble_category_1_idx" btree ((mydouble(category) + 1))
     "pt12_sdata_idx" btree (sdata)
     "pt12_tdata_idx" btree (tdata COLLATE mycollation)
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 9ab74c8df0a..713bb5d10f1 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -73,6 +73,13 @@
 #include "utils/syscache.h"
 
 
+/* context for ChooseIndexExpressionName_walker */
+typedef struct CIEN_context
+{
+	Relation	rel;			/* index's parent relation */
+	StringInfo	buf;			/* output string */
+} CIEN_context;
+
 /* non-export function prototypes */
 static bool CompareOpclassOptions(const Datum *opts1, const Datum *opts2, int natts);
 static void CheckPredicate(Expr *predicate);
@@ -98,7 +105,10 @@ static char *ChooseIndexName(const char *tabname, Oid namespaceId,
 							 const List *colnames, const List *exclusionOpNames,
 							 bool primary, bool isconstraint);
 static char *ChooseIndexNameAddition(const List *colnames);
-static List *ChooseIndexColumnNames(const List *indexElems);
+static List *ChooseIndexColumnNames(Relation rel, const List *indexElems);
+static char *ChooseIndexExpressionName(Relation rel, Node *indexExpr);
+static bool ChooseIndexExpressionName_walker(Node *node,
+											 CIEN_context *context);
 static void ReindexIndex(const ReindexStmt *stmt, const ReindexParams *params,
 						 bool isTopLevel);
 static void RangeVarCallbackForReindexIndex(const RangeVar *relation,
@@ -824,7 +834,7 @@ DefineIndex(ParseState *pstate,
 	/*
 	 * Choose the index column names.
 	 */
-	indexColNames = ChooseIndexColumnNames(allIndexParams);
+	indexColNames = ChooseIndexColumnNames(rel, allIndexParams);
 
 	/*
 	 * Select name for index if caller didn't specify
@@ -2782,13 +2792,14 @@ ChooseIndexNameAddition(const List *colnames)
 
 /*
  * Select the actual names to be used for the columns of an index, given the
- * list of IndexElems for the columns.  This is mostly about ensuring the
- * names are unique so we don't get a conflicting-attribute-names error.
+ * parent Relation and the list of IndexElems for the columns.  The logic in
+ * this function is mostly about ensuring the names are unique so we don't
+ * get a conflicting-attribute-names error.
  *
  * Returns a List of plain strings (char *, not String nodes).
  */
 static List *
-ChooseIndexColumnNames(const List *indexElems)
+ChooseIndexColumnNames(Relation rel, const List *indexElems)
 {
 	List	   *result = NIL;
 	ListCell   *lc;
@@ -2807,7 +2818,7 @@ ChooseIndexColumnNames(const List *indexElems)
 		else if (ielem->name)
 			origname = ielem->name; /* simple column reference */
 		else
-			origname = "expr";	/* default name for expression */
+			origname = ChooseIndexExpressionName(rel, ielem->expr);
 
 		/* If it conflicts with any previous column, tweak it */
 		curname = origname;
@@ -2841,6 +2852,120 @@ ChooseIndexColumnNames(const List *indexElems)
 	return result;
 }
 
+/*
+ * Generate a suitable index-column name for an index expression.
+ *
+ * Our strategy is to collect the Var names, Const values, and function names
+ * appearing in the expression, and print them separated by underscores.
+ * We could expend a lot more effort to handle additional expression node
+ * types, but this seems sufficient to usually produce a column name distinct
+ * from other index expressions.
+ */
+static char *
+ChooseIndexExpressionName(Relation rel, Node *indexExpr)
+{
+	StringInfoData buf;
+	CIEN_context context;
+	int			nlen;
+
+	/* Prepare ... */
+	initStringInfo(&buf);
+	context.rel = rel;
+	context.buf = &buf;
+	/* Walk the tree, stopping when we have enough text */
+	(void) ChooseIndexExpressionName_walker(indexExpr, &context);
+	/* Ensure generated names are shorter than NAMEDATALEN */
+	nlen = pg_mbcliplen(buf.data, buf.len, NAMEDATALEN - 1);
+	buf.data[nlen] = '\0';
+	return buf.data;
+}
+
+/* Recursive guts of ChooseIndexExpressionName */
+static bool
+ChooseIndexExpressionName_walker(Node *node,
+								 CIEN_context *context)
+{
+	if (node == NULL)
+		return false;
+	if (IsA(node, Var))
+	{
+		Var		   *var = (Var *) node;
+		TupleDesc	tupdesc = RelationGetDescr(context->rel);
+		Form_pg_attribute att;
+
+		/* Paranoia: ignore the Var if it looks fishy */
+		if (var->varno != 1 || var->varlevelsup != 0 ||
+			var->varattno <= 0 || var->varattno > tupdesc->natts)
+			return false;
+		att = TupleDescAttr(tupdesc, var->varattno - 1);
+		if (att->attisdropped)
+			return false;		/* even more paranoia; shouldn't happen */
+
+		if (context->buf->len > 0)
+			appendStringInfoChar(context->buf, '_');
+		appendStringInfoString(context->buf, NameStr(att->attname));
+
+		/* Done if we've already reached NAMEDATALEN */
+		return (context->buf->len >= NAMEDATALEN);
+	}
+	else if (IsA(node, Const))
+	{
+		Const	   *constval = (Const *) node;
+
+		if (context->buf->len > 0)
+			appendStringInfoChar(context->buf, '_');
+		if (constval->constisnull)
+			appendStringInfoString(context->buf, "NULL");
+		else
+		{
+			Oid			typoutput;
+			bool		typIsVarlena;
+			char	   *extval;
+
+			getTypeOutputInfo(constval->consttype,
+							  &typoutput, &typIsVarlena);
+			extval = OidOutputFunctionCall(typoutput, constval->constvalue);
+
+			/*
+			 * We sanitize constant values by dropping non-alphanumeric ASCII
+			 * characters.  This is probably not really necessary, but it
+			 * reduces the odds of needing to double-quote the generated name.
+			 */
+			for (const char *ptr = extval; *ptr; ptr++)
+			{
+				if (IS_HIGHBIT_SET(*ptr) ||
+					strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+						   "abcdefghijklmnopqrstuvwxyz"
+						   "0123456789", *ptr) != NULL)
+					appendStringInfoChar(context->buf, *ptr);
+			}
+		}
+
+		/* Done if we've already reached NAMEDATALEN */
+		return (context->buf->len >= NAMEDATALEN);
+	}
+	else if (IsA(node, FuncExpr))
+	{
+		FuncExpr   *funcexpr = (FuncExpr *) node;
+		char	   *fname = get_func_name(funcexpr->funcid);
+
+		if (fname)
+		{
+			if (context->buf->len > 0)
+				appendStringInfoChar(context->buf, '_');
+			appendStringInfoString(context->buf, fname);
+		}
+		/* fall through to examine arguments */
+	}
+
+	/* Abandon recursion once we reach NAMEDATALEN */
+	if (context->buf->len >= NAMEDATALEN)
+		return true;
+
+	return expression_tree_walker(node, ChooseIndexExpressionName_walker,
+								  context);
+}
+
 /*
  * ExecReindex
  *
diff --git a/src/backend/parser/parse_target.c b/src/backend/parser/parse_target.c
index 541fef5f183..3d59ff61749 100644
--- a/src/backend/parser/parse_target.c
+++ b/src/backend/parser/parse_target.c
@@ -1727,22 +1727,6 @@ FigureColname(Node *node)
 	return "?column?";
 }
 
-/*
- * FigureIndexColname -
- *	  choose the name for an expression column in an index
- *
- * This is actually just like FigureColname, except we return NULL if
- * we can't pick a good name.
- */
-char *
-FigureIndexColname(Node *node)
-{
-	char	   *name = NULL;
-
-	(void) FigureColnameInternal(node, &name);
-	return name;
-}
-
 /*
  * FigureColnameInternal -
  *	  internal workhorse for FigureColname
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index a049cc67ed6..58ccc7b68f2 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -3105,11 +3105,7 @@ transformIndexStmt(Oid relid, IndexStmt *stmt, const char *queryString)
 
 		if (ielem->expr)
 		{
-			/* Extract preliminary index col name before transforming expr */
-			if (ielem->indexcolname == NULL)
-				ielem->indexcolname = FigureIndexColname(ielem->expr);
-
-			/* Now do parse transformation of the expression */
+			/* Do parse transformation of the expression */
 			ielem->expr = transformExpr(pstate, ielem->expr,
 										EXPR_KIND_INDEX_EXPRESSION);
 
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 91377a6cde3..eb4de464f8f 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -819,7 +819,8 @@ typedef enum TableLikeOption
  *
  * For a plain index attribute, 'name' is the name of the table column to
  * index, and 'expr' is NULL.  For an index expression, 'name' is NULL and
- * 'expr' is the expression tree.
+ * 'expr' is the expression tree.  indexcolname is currently used only to
+ * force column name choices when cloning an index.
  */
 typedef struct IndexElem
 {
diff --git a/src/include/parser/parse_target.h b/src/include/parser/parse_target.h
index 3f18c7cd112..3af662f84b4 100644
--- a/src/include/parser/parse_target.h
+++ b/src/include/parser/parse_target.h
@@ -53,6 +53,5 @@ extern List *checkInsertTargets(ParseState *pstate, List *cols,
 extern TupleDesc expandRecordVariable(ParseState *pstate, Var *var,
 									  int levelsup);
 extern char *FigureColname(Node *node);
-extern char *FigureIndexColname(Node *node);
 
 #endif							/* PARSE_TARGET_H */
diff --git a/src/test/regress/expected/alter_table.out b/src/test/regress/expected/alter_table.out
index b891d68d4a7..e167a41ce79 100644
--- a/src/test/regress/expected/alter_table.out
+++ b/src/test/regress/expected/alter_table.out
@@ -109,7 +109,7 @@ ALTER INDEX attmp_idx ALTER COLUMN 2 SET STATISTICS 1000;
  Column |       Type       | Key? | Definition | Storage | Stats target 
 --------+------------------+------+------------+---------+--------------
  a      | integer          | yes  | a          | plain   | 
- expr   | double precision | yes  | (d + e)    | plain   | 1000
+ d_e    | double precision | yes  | (d + e)    | plain   | 1000
  b      | cstring          | yes  | b          | plain   | 
 btree, for table "public.attmp"
 
@@ -3206,7 +3206,7 @@ DROP TABLE test_tbl1;
 CREATE TABLE test_tbl1 (x int, y text);
 CREATE INDEX test_tbl1_idx ON test_tbl1((row(x,y)::test_type1));
 ALTER TYPE test_type1 ALTER ATTRIBUTE b TYPE varchar; -- fails
-ERROR:  cannot alter type "test_type1" because column "test_tbl1_idx.row" uses it
+ERROR:  cannot alter type "test_type1" because column "test_tbl1_idx.x_y" uses it
 DROP TABLE test_tbl1;
 DROP TYPE test_type1;
 CREATE TYPE test_type2 AS (a int, b text);
@@ -3931,7 +3931,7 @@ ALTER TABLE ataddindex
 --------+------+-----------+----------+---------
  f1     | text |           |          | 
 Indexes:
-    "ataddindex_expr_excl" EXCLUDE USING btree ((f1 ~~ 'a'::text) WITH =)
+    "ataddindex_f1_a_excl" EXCLUDE USING btree ((f1 ~~ 'a'::text) WITH =)
 
 DROP TABLE ataddindex;
 CREATE TABLE ataddindex(id int, ref_id int);
diff --git a/src/test/regress/expected/create_index.out b/src/test/regress/expected/create_index.out
index 55538c4c41e..1145d57726d 100644
--- a/src/test/regress/expected/create_index.out
+++ b/src/test/regress/expected/create_index.out
@@ -1353,10 +1353,10 @@ Indexes:
     "func_index_index" UNIQUE, btree (textcat(f1, f2))
 
 \d func_index_index
-     Index "public.func_index_index"
- Column  | Type | Key? |   Definition    
----------+------+------+-----------------
- textcat | text | yes  | textcat(f1, f2)
+        Index "public.func_index_index"
+    Column     | Type | Key? |   Definition    
+---------------+------+------+-----------------
+ textcat_f1_f2 | text | yes  | textcat(f1, f2)
 unique, btree, for table "public.func_index_heap"
 
 --
@@ -1388,12 +1388,12 @@ Indexes:
   Index "public.func_index_index"
  Column | Type | Key? | Definition 
 --------+------+------+------------
- expr   | text | yes  | (f1 || f2)
+ f1_f2  | text | yes  | (f1 || f2)
 unique, btree, for table "public.func_index_heap"
 
 -- this should fail because of unsafe column type (anonymous record)
 create index on func_index_heap ((f1 || f2), (row(f1, f2)));
-ERROR:  column "row" has pseudo-type record
+ERROR:  column "f1_f21" has pseudo-type record
 --
 -- Test unique index with included columns
 --
@@ -1477,7 +1477,7 @@ VACUUM FULL concur_heap;
  f1     | text |           |          | 
  f2     | text |           |          | 
 Indexes:
-    "concur_heap_expr_idx" btree ((f2 || f1))
+    "concur_heap_f2_f1_idx" btree ((f2 || f1))
     "concur_index1" btree (f2, f1)
     "concur_index2" UNIQUE, btree (f1)
     "concur_index3" UNIQUE, btree (f2) INVALID
@@ -1493,7 +1493,7 @@ REINDEX TABLE concur_heap;
  f1     | text |           |          | 
  f2     | text |           |          | 
 Indexes:
-    "concur_heap_expr_idx" btree ((f2 || f1))
+    "concur_heap_f2_f1_idx" btree ((f2 || f1))
     "concur_index1" btree (f2, f1)
     "concur_index2" UNIQUE, btree (f1)
     "concur_index3" UNIQUE, btree (f2)
@@ -1544,7 +1544,7 @@ DROP INDEX CONCURRENTLY IF EXISTS "concur_index3";
 DROP INDEX CONCURRENTLY "concur_index4";
 DROP INDEX CONCURRENTLY "concur_index5";
 DROP INDEX CONCURRENTLY "concur_index1";
-DROP INDEX CONCURRENTLY "concur_heap_expr_idx";
+DROP INDEX CONCURRENTLY "concur_heap_f2_f1_idx";
 \d concur_heap
            Table "public.concur_heap"
  Column | Type | Collation | Nullable | Default 
diff --git a/src/test/regress/expected/create_table.out b/src/test/regress/expected/create_table.out
index a7a24fa3adc..2df8761ae8e 100644
--- a/src/test/regress/expected/create_table.out
+++ b/src/test/regress/expected/create_table.out
@@ -1146,9 +1146,9 @@ Number of partitions: 1 (Use \d+ to list them.)
  b      | integer |           |          | 
 Partition of: part_column_drop FOR VALUES FROM (1) TO (10)
 Indexes:
+    "part_column_drop_1_10_b_1_idx" btree ((b = 1))
     "part_column_drop_1_10_b_idx" btree (b) WHERE b = 1
+    "part_column_drop_1_10_d_2_idx" btree ((d = 2))
     "part_column_drop_1_10_d_idx" btree (d) WHERE d = 2
-    "part_column_drop_1_10_expr_idx" btree ((b = 1))
-    "part_column_drop_1_10_expr_idx1" btree ((d = 2))
 
 drop table part_column_drop;
diff --git a/src/test/regress/expected/create_table_like.out b/src/test/regress/expected/create_table_like.out
index 76069bde756..a23735b5fb4 100644
--- a/src/test/regress/expected/create_table_like.out
+++ b/src/test/regress/expected/create_table_like.out
@@ -435,7 +435,7 @@ NOTICE:  merging column "a" with inherited definition
  b      | text |           |          |         | extended |              | 
  c      | text |           |          |         | external |              | C
 Indexes:
-    "ctlt13_like_expr_idx" btree ((a || c))
+    "ctlt13_like_a_c_idx" btree ((a || c))
 Check constraints:
     "cc" CHECK (length(b) > 100)
     "ctlt1_a_check" CHECK (length(a) > 2)
@@ -462,8 +462,8 @@ CREATE TABLE ctlt_all (LIKE ctlt1 INCLUDING ALL);
  b      | text |           |          |         | extended |              | B
 Indexes:
     "ctlt_all_pkey" PRIMARY KEY, btree (a)
+    "ctlt_all_a_b_idx" btree ((a || b))
     "ctlt_all_b_idx" btree (b)
-    "ctlt_all_expr_idx" btree ((a || b))
 Check constraints:
     "cc" CHECK (length(b) > 100)
     "ctlt1_a_check" CHECK (length(a) > 2)
@@ -506,8 +506,8 @@ CREATE TABLE pg_attrdef (LIKE ctlt1 INCLUDING ALL);
  b      | text |           |          |         | extended |              | B
 Indexes:
     "pg_attrdef_pkey" PRIMARY KEY, btree (a)
+    "pg_attrdef_a_b_idx" btree ((a || b))
     "pg_attrdef_b_idx" btree (b)
-    "pg_attrdef_expr_idx" btree ((a || b))
 Check constraints:
     "cc" CHECK (length(b) > 100)
     "ctlt1_a_check" CHECK (length(a) > 2)
@@ -532,8 +532,8 @@ CREATE TABLE ctlt1 (LIKE ctlt1 INCLUDING ALL);
  b      | text |           |          |         | extended |              | B
 Indexes:
     "ctlt1_pkey" PRIMARY KEY, btree (a)
+    "ctlt1_a_b_idx" btree ((a || b))
     "ctlt1_b_idx" btree (b)
-    "ctlt1_expr_idx" btree ((a || b))
 Check constraints:
     "cc" CHECK (length(b) > 100)
     "ctlt1_a_check" CHECK (length(a) > 2)
diff --git a/src/test/regress/expected/indexing.out b/src/test/regress/expected/indexing.out
index 929feda6fa3..4d350fbc658 100644
--- a/src/test/regress/expected/indexing.out
+++ b/src/test/regress/expected/indexing.out
@@ -274,11 +274,11 @@ alter table idxpart attach partition idxpart1 for values from (0) to (1000);
  b      | integer |           |          | 
 Partition of: idxpart FOR VALUES FROM (0) TO (1000)
 Indexes:
+    "idxpart1_a_0_idx" btree ((a + 0))
     "idxpart1_a_a1_idx" btree (a, a)
     "idxpart1_a_idx" hash (a)
     "idxpart1_a_idx1" btree (a) WHERE b > 1
     "idxpart1_a_idx2" btree (a)
-    "idxpart1_expr_idx" btree ((a + 0))
 
 drop table idxpart;
 -- If CREATE INDEX ONLY, don't create indexes on partitions; and existing
@@ -448,23 +448,23 @@ create index on idxpart1 ((a+b)) where d = true;
  d      | boolean |           |          | 
 Partition of: idxpart FOR VALUES FROM (0) TO (10)
 Indexes:
+    "idxpart1_a_b_idx" btree ((a + b)) WHERE d = true
     "idxpart1_a_idx" btree (a)
     "idxpart1_b_c_idx" btree (b, c)
-    "idxpart1_expr_idx" btree ((a + b)) WHERE d = true
 
 select relname, relkind, inhparent::regclass
     from pg_class left join pg_index ix on (indexrelid = oid)
 	left join pg_inherits on (ix.indexrelid = inhrelid)
 	where relname like 'idxpart%' order by relname;
-      relname      | relkind | inhparent 
--------------------+---------+-----------
- idxpart           | p       | 
- idxpart1          | r       | 
- idxpart1_a_idx    | i       | idxparti
- idxpart1_b_c_idx  | i       | idxparti2
- idxpart1_expr_idx | i       | 
- idxparti          | I       | 
- idxparti2         | I       | 
+     relname      | relkind | inhparent 
+------------------+---------+-----------
+ idxpart          | p       | 
+ idxpart1         | r       | 
+ idxpart1_a_b_idx | i       | 
+ idxpart1_a_idx   | i       | idxparti
+ idxpart1_b_c_idx | i       | idxparti2
+ idxparti         | I       | 
+ idxparti2        | I       | 
 (7 rows)
 
 create index idxparti3 on idxpart ((a+b)) where d = true;
@@ -478,24 +478,24 @@ create index idxparti3 on idxpart ((a+b)) where d = true;
  d      | boolean |           |          | 
 Partition of: idxpart FOR VALUES FROM (0) TO (10)
 Indexes:
+    "idxpart1_a_b_idx" btree ((a + b)) WHERE d = true
     "idxpart1_a_idx" btree (a)
     "idxpart1_b_c_idx" btree (b, c)
-    "idxpart1_expr_idx" btree ((a + b)) WHERE d = true
 
 select relname, relkind, inhparent::regclass
     from pg_class left join pg_index ix on (indexrelid = oid)
 	left join pg_inherits on (ix.indexrelid = inhrelid)
 	where relname like 'idxpart%' order by relname;
-      relname      | relkind | inhparent 
--------------------+---------+-----------
- idxpart           | p       | 
- idxpart1          | r       | 
- idxpart1_a_idx    | i       | idxparti
- idxpart1_b_c_idx  | i       | idxparti2
- idxpart1_expr_idx | i       | idxparti3
- idxparti          | I       | 
- idxparti2         | I       | 
- idxparti3         | I       | 
+     relname      | relkind | inhparent 
+------------------+---------+-----------
+ idxpart          | p       | 
+ idxpart1         | r       | 
+ idxpart1_a_b_idx | i       | idxparti3
+ idxpart1_a_idx   | i       | idxparti
+ idxpart1_b_c_idx | i       | idxparti2
+ idxparti         | I       | 
+ idxparti2        | I       | 
+ idxparti3        | I       | 
 (8 rows)
 
 drop table idxpart;
@@ -559,41 +559,41 @@ create index concurrently on idxpart11 ((a/b));
 ERROR:  division by zero
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
-      relname       | indisvalid 
---------------------+------------
- idxpart11_expr_idx | f
- idxpart1_expr_idx  | f
- idxpart2_expr_idx  | t
- idxpart_expr_idx   | f
+      relname      | indisvalid 
+-------------------+------------
+ idxpart11_a_b_idx | f
+ idxpart1_a_b_idx  | f
+ idxpart2_a_b_idx  | t
+ idxpart_a_b_idx   | f
 (4 rows)
 
 -- attach the indexes; parents stay invalid
-alter index idxpart1_expr_idx attach partition idxpart11_expr_idx;
-alter index idxpart_expr_idx attach partition idxpart1_expr_idx;
-alter index idxpart_expr_idx attach partition idxpart2_expr_idx;
+alter index idxpart1_a_b_idx attach partition idxpart11_a_b_idx;
+alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
+alter index idxpart_a_b_idx attach partition idxpart2_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
-      relname       | indisvalid 
---------------------+------------
- idxpart11_expr_idx | f
- idxpart1_expr_idx  | f
- idxpart2_expr_idx  | t
- idxpart_expr_idx   | f
+      relname      | indisvalid 
+-------------------+------------
+ idxpart11_a_b_idx | f
+ idxpart1_a_b_idx  | f
+ idxpart2_a_b_idx  | t
+ idxpart_a_b_idx   | f
 (4 rows)
 
 -- fix the index on the leaf partition
 delete from idxpart11 where b = 0;
-reindex index concurrently idxpart11_expr_idx;
+reindex index concurrently idxpart11_a_b_idx;
 -- reattach the leaf partition index; parents should now be valid
-alter index idxpart1_expr_idx attach partition idxpart11_expr_idx;
+alter index idxpart1_a_b_idx attach partition idxpart11_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
-      relname       | indisvalid 
---------------------+------------
- idxpart11_expr_idx | t
- idxpart1_expr_idx  | t
- idxpart2_expr_idx  | t
- idxpart_expr_idx   | t
+      relname      | indisvalid 
+-------------------+------------
+ idxpart11_a_b_idx | t
+ idxpart1_a_b_idx  | t
+ idxpart2_a_b_idx  | t
+ idxpart_a_b_idx   | t
 (4 rows)
 
 drop table idxpart;
@@ -612,37 +612,37 @@ create index concurrently on idxpart2 ((a/b));
 ERROR:  division by zero
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
-      relname      | indisvalid 
--------------------+------------
- idxpart1_expr_idx | f
- idxpart2_expr_idx | f
- idxpart_expr_idx  | f
+     relname      | indisvalid 
+------------------+------------
+ idxpart1_a_b_idx | f
+ idxpart2_a_b_idx | f
+ idxpart_a_b_idx  | f
 (3 rows)
 
 -- attach both; parent stays invalid
-alter index idxpart_expr_idx attach partition idxpart1_expr_idx;
-alter index idxpart_expr_idx attach partition idxpart2_expr_idx;
+alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
+alter index idxpart_a_b_idx attach partition idxpart2_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
-      relname      | indisvalid 
--------------------+------------
- idxpart1_expr_idx | f
- idxpart2_expr_idx | f
- idxpart_expr_idx  | f
+     relname      | indisvalid 
+------------------+------------
+ idxpart1_a_b_idx | f
+ idxpart2_a_b_idx | f
+ idxpart_a_b_idx  | f
 (3 rows)
 
 -- fix only idxpart1's index, leave idxpart2's still invalid
 delete from idxpart1 where b = 0;
-reindex index concurrently idxpart1_expr_idx;
+reindex index concurrently idxpart1_a_b_idx;
 -- re-attach the fixed child; parent should stay invalid
-alter index idxpart_expr_idx attach partition idxpart1_expr_idx;
+alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
-      relname      | indisvalid 
--------------------+------------
- idxpart1_expr_idx | t
- idxpart2_expr_idx | f
- idxpart_expr_idx  | f
+     relname      | indisvalid 
+------------------+------------
+ idxpart1_a_b_idx | t
+ idxpart2_a_b_idx | f
+ idxpart_a_b_idx  | f
 (3 rows)
 
 drop table idxpart;
@@ -772,11 +772,11 @@ select relname as child, inhparent::regclass as parent, pg_get_indexdef as child
   from pg_class join pg_inherits on inhrelid = oid,
   lateral pg_get_indexdef(pg_class.oid)
   where relkind in ('i', 'I') and relname like 'idxpart%' order by relname;
-       child       |      parent      |                                 childdef                                  
--------------------+------------------+---------------------------------------------------------------------------
- idxpart1_expr_idx | idxpart_expr_idx | CREATE INDEX idxpart1_expr_idx ON public.idxpart1 USING btree (((a + b)))
- idxpart2_expr_idx | idxpart_expr_idx | CREATE INDEX idxpart2_expr_idx ON public.idxpart2 USING btree (((a + b)))
- idxpart3_expr_idx | idxpart_expr_idx | CREATE INDEX idxpart3_expr_idx ON public.idxpart3 USING btree (((a + b)))
+      child       |     parent      |                                 childdef                                 
+------------------+-----------------+--------------------------------------------------------------------------
+ idxpart1_a_b_idx | idxpart_a_b_idx | CREATE INDEX idxpart1_a_b_idx ON public.idxpart1 USING btree (((a + b)))
+ idxpart2_a_b_idx | idxpart_a_b_idx | CREATE INDEX idxpart2_a_b_idx ON public.idxpart2 USING btree (((a + b)))
+ idxpart3_a_b_idx | idxpart_a_b_idx | CREATE INDEX idxpart3_a_b_idx ON public.idxpart3 USING btree (((a + b)))
 (3 rows)
 
 drop table idxpart;
@@ -922,14 +922,14 @@ select c.relname, pg_get_indexdef(indexrelid)
   from pg_class c join pg_index i on c.oid = i.indexrelid
   where indrelid::regclass::text like 'idxpart%'
   order by indexrelid::regclass::text collate "C";
-      relname      |                               pg_get_indexdef                                
--------------------+------------------------------------------------------------------------------
- idxpart1_abs_idx  | CREATE INDEX idxpart1_abs_idx ON public.idxpart1 USING btree (abs(b))
- idxpart1_expr_idx | CREATE INDEX idxpart1_expr_idx ON public.idxpart1 USING btree (((b + 1)))
- idxpart2_abs_idx  | CREATE INDEX idxpart2_abs_idx ON public.idxpart2 USING btree (abs(b))
- idxpart2_expr_idx | CREATE INDEX idxpart2_expr_idx ON public.idxpart2 USING btree (((b + 1)))
- idxpart_abs_idx   | CREATE INDEX idxpart_abs_idx ON ONLY public.idxpart USING btree (abs(b))
- idxpart_expr_idx  | CREATE INDEX idxpart_expr_idx ON ONLY public.idxpart USING btree (((b + 1)))
+      relname       |                               pg_get_indexdef                               
+--------------------+-----------------------------------------------------------------------------
+ idxpart1_abs_b_idx | CREATE INDEX idxpart1_abs_b_idx ON public.idxpart1 USING btree (abs(b))
+ idxpart1_b_1_idx   | CREATE INDEX idxpart1_b_1_idx ON public.idxpart1 USING btree (((b + 1)))
+ idxpart2_abs_b_idx | CREATE INDEX idxpart2_abs_b_idx ON public.idxpart2 USING btree (abs(b))
+ idxpart2_b_1_idx   | CREATE INDEX idxpart2_b_1_idx ON public.idxpart2 USING btree (((b + 1)))
+ idxpart_abs_b_idx  | CREATE INDEX idxpart_abs_b_idx ON ONLY public.idxpart USING btree (abs(b))
+ idxpart_b_1_idx    | CREATE INDEX idxpart_b_1_idx ON ONLY public.idxpart USING btree (((b + 1)))
 (6 rows)
 
 drop table idxpart;
@@ -1686,13 +1686,13 @@ select indexrelid::regclass, indisvalid,
        pg_inherits inh on (idx.indexrelid = inh.inhrelid)
   where indexrelid::regclass::text like 'parted_isvalid%'
   order by indexrelid::regclass::text collate "C";
-           indexrelid           | indisvalid |       indrelid        |           inhparent           
---------------------------------+------------+-----------------------+-------------------------------
- parted_isvalid_idx             | f          | parted_isvalid_tab    | 
- parted_isvalid_idx_11          | f          | parted_isvalid_tab_11 | parted_isvalid_tab_1_expr_idx
- parted_isvalid_tab_12_expr_idx | t          | parted_isvalid_tab_12 | parted_isvalid_tab_1_expr_idx
- parted_isvalid_tab_1_expr_idx  | f          | parted_isvalid_tab_1  | parted_isvalid_idx
- parted_isvalid_tab_2_expr_idx  | t          | parted_isvalid_tab_2  | parted_isvalid_idx
+          indexrelid           | indisvalid |       indrelid        |          inhparent           
+-------------------------------+------------+-----------------------+------------------------------
+ parted_isvalid_idx            | f          | parted_isvalid_tab    | 
+ parted_isvalid_idx_11         | f          | parted_isvalid_tab_11 | parted_isvalid_tab_1_a_b_idx
+ parted_isvalid_tab_12_a_b_idx | t          | parted_isvalid_tab_12 | parted_isvalid_tab_1_a_b_idx
+ parted_isvalid_tab_1_a_b_idx  | f          | parted_isvalid_tab_1  | parted_isvalid_idx
+ parted_isvalid_tab_2_a_b_idx  | t          | parted_isvalid_tab_2  | parted_isvalid_idx
 (5 rows)
 
 drop table parted_isvalid_tab;
diff --git a/src/test/regress/expected/inherit.out b/src/test/regress/expected/inherit.out
index 3d8e8d8afd2..ff7f5bd3fbc 100644
--- a/src/test/regress/expected/inherit.out
+++ b/src/test/regress/expected/inherit.out
@@ -3395,45 +3395,45 @@ drop table parted_minmax;
 create index mcrparted_a_abs_c_idx on mcrparted (a, abs(b), c);
 -- MergeAppend must be used when a default partition exists
 explain (costs off) select * from mcrparted order by a, abs(b), c;
-                                  QUERY PLAN                                   
--------------------------------------------------------------------------------
+                                   QUERY PLAN                                    
+---------------------------------------------------------------------------------
  Merge Append
    Sort Key: mcrparted.a, (abs(mcrparted.b)), mcrparted.c
-   ->  Index Scan using mcrparted0_a_abs_c_idx on mcrparted0 mcrparted_1
-   ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
-   ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
-   ->  Index Scan using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
-   ->  Index Scan using mcrparted4_a_abs_c_idx on mcrparted4 mcrparted_5
-   ->  Index Scan using mcrparted5_a_abs_c_idx on mcrparted5 mcrparted_6
-   ->  Index Scan using mcrparted_def_a_abs_c_idx on mcrparted_def mcrparted_7
+   ->  Index Scan using mcrparted0_a_abs_b_c_idx on mcrparted0 mcrparted_1
+   ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
+   ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
+   ->  Index Scan using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
+   ->  Index Scan using mcrparted4_a_abs_b_c_idx on mcrparted4 mcrparted_5
+   ->  Index Scan using mcrparted5_a_abs_b_c_idx on mcrparted5 mcrparted_6
+   ->  Index Scan using mcrparted_def_a_abs_b_c_idx on mcrparted_def mcrparted_7
 (9 rows)
 
 drop table mcrparted_def;
 -- Append is used for a RANGE partitioned table with no default
 -- and no subpartitions
 explain (costs off) select * from mcrparted order by a, abs(b), c;
-                               QUERY PLAN                                
--------------------------------------------------------------------------
+                                QUERY PLAN                                 
+---------------------------------------------------------------------------
  Append
-   ->  Index Scan using mcrparted0_a_abs_c_idx on mcrparted0 mcrparted_1
-   ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
-   ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
-   ->  Index Scan using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
-   ->  Index Scan using mcrparted4_a_abs_c_idx on mcrparted4 mcrparted_5
-   ->  Index Scan using mcrparted5_a_abs_c_idx on mcrparted5 mcrparted_6
+   ->  Index Scan using mcrparted0_a_abs_b_c_idx on mcrparted0 mcrparted_1
+   ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
+   ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
+   ->  Index Scan using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
+   ->  Index Scan using mcrparted4_a_abs_b_c_idx on mcrparted4 mcrparted_5
+   ->  Index Scan using mcrparted5_a_abs_b_c_idx on mcrparted5 mcrparted_6
 (7 rows)
 
 -- Append is used with subpaths in reverse order with backwards index scans
 explain (costs off) select * from mcrparted order by a desc, abs(b) desc, c desc;
-                                    QUERY PLAN                                    
-----------------------------------------------------------------------------------
+                                     QUERY PLAN                                     
+------------------------------------------------------------------------------------
  Append
-   ->  Index Scan Backward using mcrparted5_a_abs_c_idx on mcrparted5 mcrparted_6
-   ->  Index Scan Backward using mcrparted4_a_abs_c_idx on mcrparted4 mcrparted_5
-   ->  Index Scan Backward using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
-   ->  Index Scan Backward using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
-   ->  Index Scan Backward using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
-   ->  Index Scan Backward using mcrparted0_a_abs_c_idx on mcrparted0 mcrparted_1
+   ->  Index Scan Backward using mcrparted5_a_abs_b_c_idx on mcrparted5 mcrparted_6
+   ->  Index Scan Backward using mcrparted4_a_abs_b_c_idx on mcrparted4 mcrparted_5
+   ->  Index Scan Backward using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
+   ->  Index Scan Backward using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
+   ->  Index Scan Backward using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
+   ->  Index Scan Backward using mcrparted0_a_abs_b_c_idx on mcrparted0 mcrparted_1
 (7 rows)
 
 -- check that Append plan is used containing a MergeAppend for sub-partitions
@@ -3443,18 +3443,18 @@ create table mcrparted5 partition of mcrparted for values from (20, 20, 20) to (
 create table mcrparted5a partition of mcrparted5 for values in(20);
 create table mcrparted5_def partition of mcrparted5 default;
 explain (costs off) select * from mcrparted order by a, abs(b), c;
-                                      QUERY PLAN                                       
----------------------------------------------------------------------------------------
+                                       QUERY PLAN                                        
+-----------------------------------------------------------------------------------------
  Append
-   ->  Index Scan using mcrparted0_a_abs_c_idx on mcrparted0 mcrparted_1
-   ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
-   ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
-   ->  Index Scan using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
-   ->  Index Scan using mcrparted4_a_abs_c_idx on mcrparted4 mcrparted_5
+   ->  Index Scan using mcrparted0_a_abs_b_c_idx on mcrparted0 mcrparted_1
+   ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
+   ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
+   ->  Index Scan using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
+   ->  Index Scan using mcrparted4_a_abs_b_c_idx on mcrparted4 mcrparted_5
    ->  Merge Append
          Sort Key: mcrparted_7.a, (abs(mcrparted_7.b)), mcrparted_7.c
-         ->  Index Scan using mcrparted5a_a_abs_c_idx on mcrparted5a mcrparted_7
-         ->  Index Scan using mcrparted5_def_a_abs_c_idx on mcrparted5_def mcrparted_8
+         ->  Index Scan using mcrparted5a_a_abs_b_c_idx on mcrparted5a mcrparted_7
+         ->  Index Scan using mcrparted5_def_a_abs_b_c_idx on mcrparted5_def mcrparted_8
 (10 rows)
 
 drop table mcrparted5_def;
@@ -3462,30 +3462,30 @@ drop table mcrparted5_def;
 -- into the main Append when the sub-partition is unordered but contains
 -- just a single sub-partition.
 explain (costs off) select a, abs(b) from mcrparted order by a, abs(b), c;
-                                QUERY PLAN                                 
----------------------------------------------------------------------------
+                                 QUERY PLAN                                  
+-----------------------------------------------------------------------------
  Append
-   ->  Index Scan using mcrparted0_a_abs_c_idx on mcrparted0 mcrparted_1
-   ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
-   ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
-   ->  Index Scan using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
-   ->  Index Scan using mcrparted4_a_abs_c_idx on mcrparted4 mcrparted_5
-   ->  Index Scan using mcrparted5a_a_abs_c_idx on mcrparted5a mcrparted_6
+   ->  Index Scan using mcrparted0_a_abs_b_c_idx on mcrparted0 mcrparted_1
+   ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
+   ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
+   ->  Index Scan using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
+   ->  Index Scan using mcrparted4_a_abs_b_c_idx on mcrparted4 mcrparted_5
+   ->  Index Scan using mcrparted5a_a_abs_b_c_idx on mcrparted5a mcrparted_6
 (7 rows)
 
 -- check that Append is used when the sub-partitioned tables are pruned
 -- during planning.
 explain (costs off) select * from mcrparted where a < 20 order by a, abs(b), c;
-                               QUERY PLAN                                
--------------------------------------------------------------------------
+                                QUERY PLAN                                 
+---------------------------------------------------------------------------
  Append
-   ->  Index Scan using mcrparted0_a_abs_c_idx on mcrparted0 mcrparted_1
+   ->  Index Scan using mcrparted0_a_abs_b_c_idx on mcrparted0 mcrparted_1
          Index Cond: (a < 20)
-   ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
+   ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
          Index Cond: (a < 20)
-   ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
+   ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
          Index Cond: (a < 20)
-   ->  Index Scan using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
+   ->  Index Scan using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
          Index Cond: (a < 20)
 (9 rows)
 
@@ -3634,19 +3634,19 @@ create index on mcrparted2 (a, abs(b), c);
 create index on mcrparted3 (a, abs(b), c);
 create index on mcrparted4 (a, abs(b), c);
 explain (costs off) select * from mcrparted where a < 20 order by a, abs(b), c limit 1;
-                                  QUERY PLAN                                   
--------------------------------------------------------------------------------
+                                   QUERY PLAN                                    
+---------------------------------------------------------------------------------
  Limit
    ->  Append
          ->  Sort
                Sort Key: mcrparted_1.a, (abs(mcrparted_1.b)), mcrparted_1.c
                ->  Seq Scan on mcrparted0 mcrparted_1
                      Filter: (a < 20)
-         ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_2
+         ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_2
                Index Cond: (a < 20)
-         ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_3
+         ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_3
                Index Cond: (a < 20)
-         ->  Index Scan using mcrparted3_a_abs_c_idx on mcrparted3 mcrparted_4
+         ->  Index Scan using mcrparted3_a_abs_b_c_idx on mcrparted3 mcrparted_4
                Index Cond: (a < 20)
 (12 rows)
 
@@ -3654,12 +3654,12 @@ set enable_bitmapscan = 0;
 -- Ensure Append node can be used when the partition is ordered by some
 -- pathkeys which were deemed redundant.
 explain (costs off) select * from mcrparted where a = 10 order by a, abs(b), c;
-                               QUERY PLAN                                
--------------------------------------------------------------------------
+                                QUERY PLAN                                 
+---------------------------------------------------------------------------
  Append
-   ->  Index Scan using mcrparted1_a_abs_c_idx on mcrparted1 mcrparted_1
+   ->  Index Scan using mcrparted1_a_abs_b_c_idx on mcrparted1 mcrparted_1
          Index Cond: (a = 10)
-   ->  Index Scan using mcrparted2_a_abs_c_idx on mcrparted2 mcrparted_2
+   ->  Index Scan using mcrparted2_a_abs_b_c_idx on mcrparted2 mcrparted_2
          Index Cond: (a = 10)
 (5 rows)
 
diff --git a/src/test/regress/expected/rangetypes.out b/src/test/regress/expected/rangetypes.out
index e062a4e5c2c..98ba738fb1d 100644
--- a/src/test/regress/expected/rangetypes.out
+++ b/src/test/regress/expected/rangetypes.out
@@ -1539,10 +1539,10 @@ select count(*) from test_range_elem where i <@ int4range(10,50);
 create index on test_range_elem using spgist(int4range(i,i+10));
 explain (costs off)
 select count(*) from test_range_elem where int4range(i,i+10) <@ int4range(10,30);
-                               QUERY PLAN                                
--------------------------------------------------------------------------
+                                   QUERY PLAN                                   
+--------------------------------------------------------------------------------
  Aggregate
-   ->  Index Scan using test_range_elem_int4range_idx on test_range_elem
+   ->  Index Scan using test_range_elem_int4range_i_i_10_idx on test_range_elem
          Index Cond: (int4range(i, (i + 10)) <@ '[10,30)'::int4range)
 (3 rows)
 
diff --git a/src/test/regress/expected/stats_import.out b/src/test/regress/expected/stats_import.out
index 4520f0b664e..426e54c2f27 100644
--- a/src/test/regress/expected/stats_import.out
+++ b/src/test/regress/expected/stats_import.out
@@ -1442,14 +1442,14 @@ CROSS JOIN LATERAL
 WHERE s.schemaname = 'stats_import'
 AND s.tablename IN ('test', 'is_odd')
 ORDER BY s.tablename, s.attname, s.inherited;
-  schemaname  | tablename | attname | inherited | r 
---------------+-----------+---------+-----------+---
- stats_import | is_odd    | expr    | f         | t
- stats_import | test      | arange  | f         | t
- stats_import | test      | comp    | f         | t
- stats_import | test      | id      | f         | t
- stats_import | test      | name    | f         | t
- stats_import | test      | tags    | f         | t
+  schemaname  | tablename | attname  | inherited | r 
+--------------+-----------+----------+-----------+---
+ stats_import | is_odd    | comp_2_1 | f         | t
+ stats_import | test      | arange   | f         | t
+ stats_import | test      | comp     | f         | t
+ stats_import | test      | id       | f         | t
+ stats_import | test      | name     | f         | t
+ stats_import | test      | tags     | f         | t
 (6 rows)
 
 SELECT c.relname, COUNT(*) AS num_stats
diff --git a/src/test/regress/sql/create_index.sql b/src/test/regress/sql/create_index.sql
index 82e4062a215..8e59f6bcd01 100644
--- a/src/test/regress/sql/create_index.sql
+++ b/src/test/regress/sql/create_index.sql
@@ -581,7 +581,7 @@ DROP INDEX CONCURRENTLY IF EXISTS "concur_index3";
 DROP INDEX CONCURRENTLY "concur_index4";
 DROP INDEX CONCURRENTLY "concur_index5";
 DROP INDEX CONCURRENTLY "concur_index1";
-DROP INDEX CONCURRENTLY "concur_heap_expr_idx";
+DROP INDEX CONCURRENTLY "concur_heap_f2_f1_idx";
 
 \d concur_heap
 
diff --git a/src/test/regress/sql/indexing.sql b/src/test/regress/sql/indexing.sql
index 3d43af3323c..561403cc7f7 100644
--- a/src/test/regress/sql/indexing.sql
+++ b/src/test/regress/sql/indexing.sql
@@ -264,16 +264,16 @@ create index concurrently on idxpart11 ((a/b));
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
 -- attach the indexes; parents stay invalid
-alter index idxpart1_expr_idx attach partition idxpart11_expr_idx;
-alter index idxpart_expr_idx attach partition idxpart1_expr_idx;
-alter index idxpart_expr_idx attach partition idxpart2_expr_idx;
+alter index idxpart1_a_b_idx attach partition idxpart11_a_b_idx;
+alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
+alter index idxpart_a_b_idx attach partition idxpart2_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
 -- fix the index on the leaf partition
 delete from idxpart11 where b = 0;
-reindex index concurrently idxpart11_expr_idx;
+reindex index concurrently idxpart11_a_b_idx;
 -- reattach the leaf partition index; parents should now be valid
-alter index idxpart1_expr_idx attach partition idxpart11_expr_idx;
+alter index idxpart1_a_b_idx attach partition idxpart11_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
 drop table idxpart;
@@ -292,15 +292,15 @@ create index concurrently on idxpart2 ((a/b));
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
 -- attach both; parent stays invalid
-alter index idxpart_expr_idx attach partition idxpart1_expr_idx;
-alter index idxpart_expr_idx attach partition idxpart2_expr_idx;
+alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
+alter index idxpart_a_b_idx attach partition idxpart2_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
 -- fix only idxpart1's index, leave idxpart2's still invalid
 delete from idxpart1 where b = 0;
-reindex index concurrently idxpart1_expr_idx;
+reindex index concurrently idxpart1_a_b_idx;
 -- re-attach the fixed child; parent should stay invalid
-alter index idxpart_expr_idx attach partition idxpart1_expr_idx;
+alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
 select relname, indisvalid from pg_class join pg_index on indexrelid = oid
    where relname like 'idxpart%' order by relname;
 drop table idxpart;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index 8cf40c87043..40959e8c126 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -386,6 +386,7 @@ CFuncHashTabEntry
 CHAR
 CHECKPOINT
 CHKVAL
+CIEN_context
 CIRCLE
 CMPDAffix
 CONTEXT
-- 
2.52.0

