Add a "relistemp" boolean column to pg_class, which is true for temporary

relations (including a temp table's indexes and toast table/index), and
false for normal relations.  For ease of checking, this commit just adds
the column and fills it correctly --- revising the relation access machinery
to use it will come separately.

diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml
index 0ab11dda6d2416e540b6e07546c007e777a381e9..eb17a0b71c4479f10e74c244cb7fdc7dadd63ef4 100644 (file)
--- a/doc/src/sgml/catalogs.sgml
+++ b/doc/src/sgml/catalogs.sgml
@@ -1,4 +1,4 @@
-
+
 
@@ -1532,6 +1532,16 @@
       
      
 
+     
+      relistemp
+      bool
+      
+      
+       True if this table is a temporary relation.  If so, only the creating
+       session can safely access its contents
+      
+     
+
      
       relkind
       char

diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 70083b52a64de3ffd4d6229063bcbfcd1eba289b..f6b52109fe96bfe5e85223712c810e5a071de457 100644 (file)
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.351 2009/02/24 01:38:09 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.352 2009/03/31 17:59:56 tgl Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -664,6 +664,7 @@ InsertPgClassTuple(Relation pg_class_desc,
    values[Anum_pg_class_reltoastidxid - 1] = ObjectIdGetDatum(rd_rel->reltoastidxid);
    values[Anum_pg_class_relhasindex - 1] = BoolGetDatum(rd_rel->relhasindex);
    values[Anum_pg_class_relisshared - 1] = BoolGetDatum(rd_rel->relisshared);
+   values[Anum_pg_class_relistemp - 1] = BoolGetDatum(rd_rel->relistemp);
    values[Anum_pg_class_relkind - 1] = CharGetDatum(rd_rel->relkind);
    values[Anum_pg_class_relnatts - 1] = Int16GetDatum(rd_rel->relnatts);
    values[Anum_pg_class_relchecks - 1] = Int16GetDatum(rd_rel->relchecks);

diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c
index 196ca0155f073f7a502178fb694b107e32c344f6..c39759ee1c9ce0312795a9e1e5671aa21692eba6 100644 (file)
--- a/src/backend/utils/cache/relcache.c
+++ b/src/backend/utils/cache/relcache.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.284 2009/01/27 12:40:15 petere Exp $
+ *   $PostgreSQL: pgsql/src/backend/utils/cache/relcache.c,v 1.285 2009/03/31 17:59:56 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1396,6 +1396,12 @@ formrdesc(const char *relationName, Oid relationReltype,
     */
    relation->rd_rel->relisshared = false;
 
+   /*
+    * Likewise, we must know if a relation is temp ... but formrdesc is
+    * not used for any temp relations.
+    */
+   relation->rd_rel->relistemp = false;
+
    relation->rd_rel->relpages = 1;
    relation->rd_rel->reltuples = 1;
    relation->rd_rel->relkind = RELKIND_RELATION;
@@ -2398,6 +2404,9 @@ RelationBuildLocalRelation(const char *relname,
     */
    rel->rd_rel->relisshared = shared_relation;
 
+   /* it is temporary if and only if it is in my temp-table namespace */
+   rel->rd_rel->relistemp = isTempOrToastNamespace(relnamespace);
+
    RelationGetRelid(rel) = relid;
 
    for (i = 0; i < natts; i++)

diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index e012b1046f2ca264689f7941d5bd27536c1d7fa9..6073623539d19791fae3b5c28c2a030163fa6d2a 100644 (file)
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -37,7 +37,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.526 2009/03/25 22:19:02 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.527 2009/03/31 17:59:56 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -53,6 +53,6 @@
  */
 
 /*                         yyyymmddN */
-#define CATALOG_VERSION_NO 200903251
+#define CATALOG_VERSION_NO 200903311
 
 #endif

diff --git a/src/include/catalog/pg_attribute.h b/src/include/catalog/pg_attribute.h
index 3fddf7e922781d02db3f13a14ef3832b8471fcb4..6fd6a08fb9dd16f5f81019928d8d39ec0a65829b 100644 (file)
--- a/src/include/catalog/pg_attribute.h
+++ b/src/include/catalog/pg_attribute.h
@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_attribute.h,v 1.146 2009/01/22 20:16:08 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_attribute.h,v 1.147 2009/03/31 17:59:56 tgl Exp $
  *
  * NOTES
  *   the genbki.sh script reads this file and generates .bki
@@ -409,17 +409,18 @@ DATA(insert ( 1249 tableoid           26 0  4  -7 0 -1 -1 t p i t f f t 0 _null_));
 { 1259, {"reltoastidxid"}, 26, -1, 4, 11, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0, { 0 } }, \
 { 1259, {"relhasindex"},   16, -1, 1, 12, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
 { 1259, {"relisshared"},   16, -1, 1, 13, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relkind"},      18, -1,  1, 14, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relnatts"},     21, -1,  2, 15, 0, -1, -1, true, 'p', 's', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relchecks"},    21, -1,  2, 16, 0, -1, -1, true, 'p', 's', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relhasoids"},    16, -1, 1, 17, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relhaspkey"},    16, -1, 1, 18, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relhasrules"},   16, -1, 1, 19, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relhastriggers"},16, -1, 1, 20, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relhassubclass"},16, -1, 1, 21, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relfrozenxid"},  28, -1, 4, 22, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0, { 0 } }, \
-{ 1259, {"relacl"},         1034, -1, -1, 23, 1, -1, -1, false, 'x', 'i', false, false, false, true, 0, { 0 } }, \
-{ 1259, {"reloptions"},  1009, -1, -1, 24, 1, -1, -1, false, 'x', 'i', false, false, false, true, 0, { 0 } }
+{ 1259, {"relistemp"},     16, -1, 1, 14, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relkind"},      18, -1,  1, 15, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relnatts"},     21, -1,  2, 16, 0, -1, -1, true, 'p', 's', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relchecks"},    21, -1,  2, 17, 0, -1, -1, true, 'p', 's', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relhasoids"},    16, -1, 1, 18, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relhaspkey"},    16, -1, 1, 19, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relhasrules"},   16, -1, 1, 20, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relhastriggers"},16, -1, 1, 21, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relhassubclass"},16, -1, 1, 22, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relfrozenxid"},  28, -1, 4, 23, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0, { 0 } }, \
+{ 1259, {"relacl"},         1034, -1, -1, 24, 1, -1, -1, false, 'x', 'i', false, false, false, true, 0, { 0 } }, \
+{ 1259, {"reloptions"},  1009, -1, -1, 25, 1, -1, -1, false, 'x', 'i', false, false, false, true, 0, { 0 } }
 
 DATA(insert ( 1259 relname         19 -1 NAMEDATALEN   1 0 -1 -1 f p c t f f t 0 _null_));
 DATA(insert ( 1259 relnamespace        26 -1 4   2 0 -1 -1 t p i t f f t 0 _null_));
@@ -434,17 +435,18 @@ DATA(insert ( 1259 reltoastrelid  26 -1 4  10 0 -1 -1 t p i t f f t 0 _null_));
 DATA(insert ( 1259 reltoastidxid   26 -1 4  11 0 -1 -1 t p i t f f t 0 _null_));
 DATA(insert ( 1259 relhasindex     16 -1 1  12 0 -1 -1 t p c t f f t 0 _null_));
 DATA(insert ( 1259 relisshared     16 -1 1  13 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relkind         18 -1 1  14 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relnatts            21 -1 2  15 0 -1 -1 t p s t f f t 0 _null_));
-DATA(insert ( 1259 relchecks       21 -1 2  16 0 -1 -1 t p s t f f t 0 _null_));
-DATA(insert ( 1259 relhasoids      16 -1 1  17 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relhaspkey      16 -1 1  18 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relhasrules     16 -1 1  19 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relhastriggers  16 -1 1  20 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relhassubclass  16 -1 1  21 0 -1 -1 t p c t f f t 0 _null_));
-DATA(insert ( 1259 relfrozenxid        28 -1 4  22 0 -1 -1 t p i t f f t 0 _null_));
-DATA(insert ( 1259 relacl        1034 -1 -1 23 1 -1 -1 f x i f f f t 0 _null_));
-DATA(insert ( 1259 reloptions    1009 -1 -1 24 1 -1 -1 f x i f f f t 0 _null_));
+DATA(insert ( 1259 relistemp       16 -1 1  14 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relkind         18 -1 1  15 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relnatts            21 -1 2  16 0 -1 -1 t p s t f f t 0 _null_));
+DATA(insert ( 1259 relchecks       21 -1 2  17 0 -1 -1 t p s t f f t 0 _null_));
+DATA(insert ( 1259 relhasoids      16 -1 1  18 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relhaspkey      16 -1 1  19 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relhasrules     16 -1 1  20 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relhastriggers  16 -1 1  21 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relhassubclass  16 -1 1  22 0 -1 -1 t p c t f f t 0 _null_));
+DATA(insert ( 1259 relfrozenxid        28 -1 4  23 0 -1 -1 t p i t f f t 0 _null_));
+DATA(insert ( 1259 relacl        1034 -1 -1 24 1 -1 -1 f x i f f f t 0 _null_));
+DATA(insert ( 1259 reloptions    1009 -1 -1 25 1 -1 -1 f x i f f f t 0 _null_));
 DATA(insert ( 1259 ctid                27 0  6  -1 0 -1 -1 f p s t f f t 0 _null_));
 DATA(insert ( 1259 oid             26 0  4  -2 0 -1 -1 t p i t f f t 0 _null_));
 DATA(insert ( 1259 xmin                28 0  4  -3 0 -1 -1 t p i t f f t 0 _null_));

diff --git a/src/include/catalog/pg_class.h b/src/include/catalog/pg_class.h
index 776158805d4e341309905610d26ae238f0e3caa8..7ad4b42b3cfa1dc9bca1643d9f3cc698b9672481 100644 (file)
--- a/src/include/catalog/pg_class.h
+++ b/src/include/catalog/pg_class.h
@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_class.h,v 1.112 2009/01/22 20:16:09 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_class.h,v 1.113 2009/03/31 17:59:56 tgl Exp $
  *
  * NOTES
  *   the genbki.sh script reads this file and generates .bki
@@ -43,6 +43,7 @@ CATALOG(pg_class,1259) BKI_BOOTSTRAP
    Oid         reltoastidxid;  /* if toast table, OID of chunk_id index */
    bool        relhasindex;    /* T if has (or has had) any indexes */
    bool        relisshared;    /* T if shared across databases */
+   bool        relistemp;      /* T if temporary relation */
    char        relkind;        /* see RELKIND_xxx constants below */
    int2        relnatts;       /* number of user attributes */
 
@@ -85,7 +86,7 @@ typedef FormData_pg_class *Form_pg_class;
  * ----------------
  */
 
-#define Natts_pg_class                 24
+#define Natts_pg_class                 25
 #define Anum_pg_class_relname          1
 #define Anum_pg_class_relnamespace     2
 #define Anum_pg_class_reltype          3
@@ -99,17 +100,18 @@ typedef FormData_pg_class *Form_pg_class;
 #define Anum_pg_class_reltoastidxid        11
 #define Anum_pg_class_relhasindex      12
 #define Anum_pg_class_relisshared      13
-#define Anum_pg_class_relkind          14
-#define Anum_pg_class_relnatts         15
-#define Anum_pg_class_relchecks            16
-#define Anum_pg_class_relhasoids       17
-#define Anum_pg_class_relhaspkey       18
-#define Anum_pg_class_relhasrules      19
-#define Anum_pg_class_relhastriggers   20
-#define Anum_pg_class_relhassubclass   21
-#define Anum_pg_class_relfrozenxid     22
-#define Anum_pg_class_relacl           23
-#define Anum_pg_class_reloptions       24
+#define Anum_pg_class_relistemp            14
+#define Anum_pg_class_relkind          15
+#define Anum_pg_class_relnatts         16
+#define Anum_pg_class_relchecks            17
+#define Anum_pg_class_relhasoids       18
+#define Anum_pg_class_relhaspkey       19
+#define Anum_pg_class_relhasrules      20
+#define Anum_pg_class_relhastriggers   21
+#define Anum_pg_class_relhassubclass   22
+#define Anum_pg_class_relfrozenxid     23
+#define Anum_pg_class_relacl           24
+#define Anum_pg_class_reloptions       25
 
 /* ----------------
  *     initial contents of pg_class
@@ -121,13 +123,13 @@ typedef FormData_pg_class *Form_pg_class;
  */
 
 /* Note: "3" in the relfrozenxid column stands for FirstNormalTransactionId */
-DATA(insert OID = 1247 (  pg_type      PGNSP 71 PGUID 0 1247 0 0 0 0 0 f f r 28 0 t f f f f 3 _null_ _null_ ));
+DATA(insert OID = 1247 (  pg_type      PGNSP 71 PGUID 0 1247 0 0 0 0 0 f f f r 28 0 t f f f f 3 _null_ _null_ ));
 DESCR("");
-DATA(insert OID = 1249 (  pg_attribute PGNSP 75 PGUID 0 1249 0 0 0 0 0 f f r 18 0 f f f f f 3 _null_ _null_ ));
+DATA(insert OID = 1249 (  pg_attribute PGNSP 75 PGUID 0 1249 0 0 0 0 0 f f f r 18 0 f f f f f 3 _null_ _null_ ));
 DESCR("");
-DATA(insert OID = 1255 (  pg_proc      PGNSP 81 PGUID 0 1255 0 0 0 0 0 f f r 25 0 t f f f f 3 _null_ _null_ ));
+DATA(insert OID = 1255 (  pg_proc      PGNSP 81 PGUID 0 1255 0 0 0 0 0 f f f r 25 0 t f f f f 3 _null_ _null_ ));
 DESCR("");
-DATA(insert OID = 1259 (  pg_class     PGNSP 83 PGUID 0 1259 0 0 0 0 0 f f r 24 0 t f f f f 3 _null_ _null_ ));
+DATA(insert OID = 1259 (  pg_class     PGNSP 83 PGUID 0 1259 0 0 0 0 0 f f f r 25 0 t f f f f 3 _null_ _null_ ));
 DESCR("");
 
 #define          RELKIND_INDEX           'i'       /* secondary index */