[PATCH v1 2/6] Handle pg_get_viewdef default args in system_functions.sql

Modernize pg_get_viewdef to use CREATE OR REPLACE FUNCTION to handle the
optional pretty argument for both versions that use OID or view name.
---
 src/backend/catalog/system_functions.sql | 14 ++++++++
 src/backend/utils/adt/ruleutils.c        | 44 ------------------------
 src/include/catalog/pg_proc.dat          | 11 ++----
 3 files changed, 16 insertions(+), 53 deletions(-)

diff --git a/src/backend/catalog/system_functions.sql b/src/backend/catalog/system_functions.sql
index febed53c9fa..c7adfad0e05 100644
--- a/src/backend/catalog/system_functions.sql
+++ b/src/backend/catalog/system_functions.sql
@@ -664,6 +664,20 @@ LANGUAGE INTERNAL
 PARALLEL SAFE
 AS 'pg_get_ruledef';
 
+CREATE OR REPLACE FUNCTION
+  pg_get_viewdef(view text, pretty bool DEFAULT false)
+RETURNS TEXT
+LANGUAGE INTERNAL
+PARALLEL RESTRICTED
+AS 'pg_get_viewdef_name';
+
+CREATE OR REPLACE FUNCTION
+  pg_get_viewdef(view oid, pretty bool DEFAULT false)
+RETURNS TEXT
+LANGUAGE INTERNAL
+PARALLEL RESTRICTED
+AS 'pg_get_viewdef';
+
 --
 -- The default permissions for functions mean that anyone can execute them.
 -- A number of functions shouldn't be executable by just anyone, but rather
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index de063d63b4f..7d576834d5c 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -658,25 +658,6 @@ pg_get_ruledef_worker(Oid ruleoid, int prettyFlags)
  */
 Datum
 pg_get_viewdef(PG_FUNCTION_ARGS)
-{
-	/* By OID */
-	Oid			viewoid = PG_GETARG_OID(0);
-	int			prettyFlags;
-	char	   *res;
-
-	prettyFlags = PRETTYFLAG_INDENT;
-
-	res = pg_get_viewdef_worker(viewoid, prettyFlags, WRAP_COLUMN_DEFAULT);
-
-	if (res == NULL)
-		PG_RETURN_NULL();
-
-	PG_RETURN_TEXT_P(string_to_text(res));
-}
-
-
-Datum
-pg_get_viewdef_ext(PG_FUNCTION_ARGS)
 {
 	/* By OID */
 	Oid			viewoid = PG_GETARG_OID(0);
@@ -716,31 +697,6 @@ pg_get_viewdef_wrap(PG_FUNCTION_ARGS)
 
 Datum
 pg_get_viewdef_name(PG_FUNCTION_ARGS)
-{
-	/* By qualified name */
-	text	   *viewname = PG_GETARG_TEXT_PP(0);
-	int			prettyFlags;
-	RangeVar   *viewrel;
-	Oid			viewoid;
-	char	   *res;
-
-	prettyFlags = PRETTYFLAG_INDENT;
-
-	/* Look up view name.  Can't lock it - we might not have privileges. */
-	viewrel = makeRangeVarFromNameList(textToQualifiedNameList(viewname));
-	viewoid = RangeVarGetRelid(viewrel, NoLock, false);
-
-	res = pg_get_viewdef_worker(viewoid, prettyFlags, WRAP_COLUMN_DEFAULT);
-
-	if (res == NULL)
-		PG_RETURN_NULL();
-
-	PG_RETURN_TEXT_P(string_to_text(res));
-}
-
-
-Datum
-pg_get_viewdef_name_ext(PG_FUNCTION_ARGS)
 {
 	/* By qualified name */
 	text	   *viewname = PG_GETARG_TEXT_PP(0);
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index c215d47f2d8..2d1aa50dac6 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -3952,13 +3952,6 @@
   proargtypes => 'oid oid', prosrc => 'oidge' },
 
 # System-view support functions
-{ oid => '1640', descr => 'select statement of a view',
-  proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
-  prorettype => 'text', proargtypes => 'text',
-  prosrc => 'pg_get_viewdef_name' },
-{ oid => '1641', descr => 'select statement of a view',
-  proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
-  prorettype => 'text', proargtypes => 'oid', prosrc => 'pg_get_viewdef' },
 { oid => '1642', descr => 'role name by OID (with fallback)',
   proname => 'pg_get_userbyid', provolatile => 's', prorettype => 'name',
   proargtypes => 'oid', prosrc => 'pg_get_userbyid' },
@@ -8494,12 +8487,12 @@
   descr => 'select statement of a view with pretty-print option',
   proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
   prorettype => 'text', proargtypes => 'text bool',
-  prosrc => 'pg_get_viewdef_name_ext' },
+  prosrc => 'pg_get_viewdef_name' },
 { oid => '2506',
   descr => 'select statement of a view with pretty-print option',
   proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
   prorettype => 'text', proargtypes => 'oid bool',
-  prosrc => 'pg_get_viewdef_ext' },
+  prosrc => 'pg_get_viewdef' },
 { oid => '3159',
   descr => 'select statement of a view with pretty-printing and specified line wrapping',
   proname => 'pg_get_viewdef', provolatile => 's', proparallel => 'r',
-- 
2.51.2


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