函数pg_get_tabledef()支持显示全局临时表的DDL

src/common/backend/utils/adt/ruleutils.cpp

@@ -2171,8 +2171,12 @@ static char* pg_get_tabledef_worker(Oid tableoid)
 
     appendStringInfo(&buf, "SET search_path = %s;", quote_identifier(get_namespace_name(tableinfo.spcid)));
 
-    appendStringInfo(&buf, "\nCREATE %s %s %s",
-        (tableinfo.relpersistence == RELPERSISTENCE_UNLOGGED) ? "UNLOGGED" : "", reltypename, relname);
+    appendStringInfo(&buf,
+        "\nCREATE %s%s %s",
+        (table_info.relpersistence == RELPERSISTENCE_UNLOGGED) ? "UNLOGGED " :
+            ((table_info.relpersistence == RELPERSISTENCE_GLOBAL_TEMP) ? "GLOBAL TEMPORARY " : ""),
+        rel_type_name,
+        rel_name);
 
     // get attribute info
     actual_atts = get_table_attribute(tableoid, &buf, formatter, ft_frmt_clmn, cnt_ft_frmt_clmns);

src/test/regress/expected/global_temporary_table_get_table_def.out

@@ -0,0 +1,20 @@
+CREATE GLOBAL TEMPORARY TABLE gtt1 (
+  ID INTEGER NOT NULL,
+  NAME CHAR(16) NOT NULL,
+  ADDRESS VARCHAR(50),
+  POSTCODE CHAR(6)
+)
+ON COMMIT PRESERVE ROWS;
+select * from pg_get_tabledef('gtt1');
+                           pg_get_tabledef                            
+----------------------------------------------------------------------
+ SET search_path = public;                                           +
+ CREATE GLOBAL TEMPORARY TABLE gtt1 (                                +
+         id integer NOT NULL,                                        +
+         name character(16) NOT NULL,                                +
+         address character varying(50),                              +
+         postcode character(6)                                       +
+ )                                                                   +
+ WITH (orientation=row, compression=no, on_commit_delete_rows=false);
+(1 row)
+

src/test/regress/parallel_schedule10

@@ -1,4 +1,4 @@
-# ----------
+# ----------
  # The first group of parallel tests
  # ----------
  test: boolean char name varchar text int2 int4 int8 oid float4 float8 bit numeric numeric_2 txid uuid money
@@ -85,3 +85,4 @@
  test: enum_empty_test
  test: alarm_component_test
  test: unify_definition_superuser
+ test: global_temporary_table_get_table_def

src/test/regress/sql/global_temporary_table_get_table_def.sql

@@ -0,0 +1,8 @@
+CREATE GLOBAL TEMPORARY TABLE gtt1 (
+  ID INTEGER NOT NULL,
+  NAME CHAR(16) NOT NULL,
+  ADDRESS VARCHAR(50),
+  POSTCODE CHAR(6)
+)
+ON COMMIT PRESERVE ROWS;
+select * from pg_get_tabledef('gtt1');