Re: [HACKERS] allowed user/db variables - Mailing list pgsql-patches

Tom Lane wrote:
> Joe Conway <mail@joeconway.com> writes:
>>ISTM that "source" is worth knowing.
>
> Hm, possibly.  Any other opinions?

This version has the seven fields I proposed, including "source". Here's
an example that shows why I think it's valuable:

regression=# \x
Expanded display is on.
regression=# select * from pg_settings where name = 'enable_seqscan';
-[ RECORD 1 ]-----------
name    | enable_seqscan
setting | on
context | user
vartype | bool
source  | default
min_val |
max_val |

regression=# update pg_settings set setting = 'off' where name =
'enable_seqscan';
-[ RECORD 1 ]---
set_config | off

regression=# select * from pg_settings where name = 'enable_seqscan';
-[ RECORD 1 ]-----------
name    | enable_seqscan
setting | off
context | user
vartype | bool
source  | session
min_val |
max_val |

regression=# alter user postgres set enable_seqscan to 'off';
ALTER USER

(log out and then back in again)

regression=# \x
Expanded display is on.
regression=# select * from pg_settings where name = 'enable_seqscan';
-[ RECORD 1 ]-----------
name    | enable_seqscan
setting | off
context | user
vartype | bool
source  | user
min_val |
max_val |

In the first case, enable_seqscan is set to its default value. After
setting it to off, it is obvious that the value has been changed for the
session only. In the third case, you can see that the value has been set
specifically for the user.

This version of the patch also includes documentation changes. Passes
all regression tests. Please apply.

Joe
Index: doc/src/sgml/runtime.sgml
===================================================================
RCS file: /opt/src/cvs/pgsql-server/doc/src/sgml/runtime.sgml,v
retrieving revision 1.187
diff -c -r1.187 runtime.sgml
*** doc/src/sgml/runtime.sgml    25 Jun 2003 01:13:24 -0000    1.187
--- doc/src/sgml/runtime.sgml    26 Jun 2003 05:01:56 -0000
***************
*** 571,584 ****
        <row>
         <entry><literal>name</literal></entry>
         <entry><type>text</type></entry>
!        <entry>The name of the run-time configuration parameter</entry>
        </row>

        <row>
         <entry><literal>setting</literal></entry>
         <entry><type>text</type></entry>
!        <entry>The current value of the run-time configuration parameter</entry>
        </row>
       </tbody>
      </tgroup>
      </table>
--- 571,615 ----
        <row>
         <entry><literal>name</literal></entry>
         <entry><type>text</type></entry>
!        <entry>run-time configuration parameter name</entry>
        </row>

        <row>
         <entry><literal>setting</literal></entry>
         <entry><type>text</type></entry>
!        <entry>current value of the parameter</entry>
        </row>
+
+       <row>
+        <entry><literal>context</literal></entry>
+        <entry><type>text</type></entry>
+        <entry>context required to set the parameter's value</entry>
+       </row>
+
+       <row>
+        <entry><literal>vartype</literal></entry>
+        <entry><type>text</type></entry>
+        <entry>parameter type</entry>
+       </row>
+
+       <row>
+        <entry><literal>source</literal></entry>
+        <entry><type>text</type></entry>
+        <entry>source of the current parameter value</entry>
+       </row>
+
+       <row>
+        <entry><literal>min_val</literal></entry>
+        <entry><type>text</type></entry>
+        <entry>minimum allowed value of the parameter</entry>
+       </row>
+
+       <row>
+        <entry><literal>max_val</literal></entry>
+        <entry><type>text</type></entry>
+        <entry>maximum allowed value of the parameter</entry>
+       </row>
+
       </tbody>
      </tgroup>
      </table>
Index: src/backend/utils/misc/guc.c
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/backend/utils/misc/guc.c,v
retrieving revision 1.131
diff -c -r1.131 guc.c
*** src/backend/utils/misc/guc.c    11 Jun 2003 22:13:22 -0000    1.131
--- src/backend/utils/misc/guc.c    26 Jun 2003 04:03:00 -0000
***************
*** 159,168 ****
   */
  enum config_type
  {
!     PGC_BOOL,
!     PGC_INT,
!     PGC_REAL,
!     PGC_STRING
  };

  /* Generic fields applicable to all types of variables */
--- 159,208 ----
   */
  enum config_type
  {
!     PGC_BOOL = 0,
!     PGC_INT = 1,
!     PGC_REAL = 2,
!     PGC_STRING = 3
! };
!
! /*
!  * Used for pg_settings. Keep in sync with config_type enum above
!  */
! static char *config_type_name[] =
! {
!     "bool",
!     "integer",
!     "real",
!     "string"
! };
!
! /*
!  * Used for pg_settings. Keep in sync with GucContext enum in guc.h
!  */
! static char *GucContextName[] =
! {
!     "internal",
!     "postmaster",
!     "sighup",
!     "backend",
!     "super-user",
!     "user"
! };
!
! /*
!  * Used for pg_settings. Keep in sync with GucSource enum in guc.h
!  */
! static char *GucSourceName[] =
! {
!     "default",
!     "environment variable",
!     "configuration file",
!     "command line",
!     "database",
!     "user",
!     "client",
!     "override",
!     "session"
  };

  /* Generic fields applicable to all types of variables */
***************
*** 2617,2639 ****
   * Return GUC variable value by variable number; optionally return canonical
   * form of name.  Return value is palloc'd.
   */
! char *
! GetConfigOptionByNum(int varnum, const char **varname, bool *noshow)
  {
!     struct config_generic *conf;

      /* check requested variable number valid */
      Assert((varnum >= 0) && (varnum < num_guc_variables));

      conf = guc_variables[varnum];

-     if (varname)
-         *varname = conf->name;
-
      if (noshow)
          *noshow = (conf->flags & GUC_NO_SHOW_ALL) ? true : false;

!     return _ShowOption(conf);
  }

  /*
--- 2657,2758 ----
   * Return GUC variable value by variable number; optionally return canonical
   * form of name.  Return value is palloc'd.
   */
! void
! GetConfigOptionByNum(int varnum, const char **values, bool *noshow)
  {
!     char                    buffer[256];
!     struct config_generic  *conf;

      /* check requested variable number valid */
      Assert((varnum >= 0) && (varnum < num_guc_variables));

      conf = guc_variables[varnum];

      if (noshow)
          *noshow = (conf->flags & GUC_NO_SHOW_ALL) ? true : false;

!     /* first get the generic attributes */
!
!     /* name */
!     values[0] = conf->name;
!
!     /* setting : use _ShowOption in order to avoid duplicating the logic */
!     values[1] = _ShowOption(conf);
!
!     /* context */
!     values[2] = GucContextName[conf->context];
!
!     /* vartype */
!     values[3] = config_type_name[conf->vartype];
!
!     /* source */
!     values[4] = GucSourceName[conf->source];
!
!     /* now get the type specifc attributes */
!     switch (conf->vartype)
!     {
!         case PGC_BOOL:
!             {
!                 /* min_val */
!                 values[5] = NULL;
!
!                 /* max_val */
!                 values[6] = NULL;
!             }
!             break;
!
!         case PGC_INT:
!             {
!                 struct config_int *lconf = (struct config_int *) conf;
!
!                 /* min_val */
!                 snprintf(buffer, sizeof(buffer), "%d", lconf->min);
!                 values[5] = pstrdup(buffer);
!
!                 /* max_val */
!                 snprintf(buffer, sizeof(buffer), "%d", lconf->max);
!                 values[6] = pstrdup(buffer);
!             }
!             break;
!
!         case PGC_REAL:
!             {
!                 struct config_real *lconf = (struct config_real *) conf;
!
!                 /* min_val */
!                 snprintf(buffer, sizeof(buffer), "%g", lconf->min);
!                 values[5] = pstrdup(buffer);
!
!                 /* max_val */
!                 snprintf(buffer, sizeof(buffer), "%g", lconf->max);
!                 values[6] = pstrdup(buffer);
!             }
!             break;
!
!         case PGC_STRING:
!             {
!                 /* min_val */
!                 values[5] = NULL;
!
!                 /* max_val */
!                 values[6] = NULL;
!             }
!             break;
!
!         default:
!             {
!                 /*
!                  * should never get here, but in case we do, set 'em to NULL
!                  */
!
!                 /* min_val */
!                 values[5] = NULL;
!
!                 /* max_val */
!                 values[6] = NULL;
!             }
!             break;
!     }
  }

  /*
***************
*** 2673,2678 ****
--- 2792,2799 ----
   * show_all_settings - equiv to SHOW ALL command but implemented as
   * a Table Function.
   */
+ #define NUM_PG_SETTINGS_ATTS    7
+
  Datum
  show_all_settings(PG_FUNCTION_ARGS)
  {
***************
*** 2696,2707 ****
           */
          oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);

!         /* need a tuple descriptor representing two TEXT columns */
!         tupdesc = CreateTemplateTupleDesc(2, false);
          TupleDescInitEntry(tupdesc, (AttrNumber) 1, "name",
                             TEXTOID, -1, 0, false);
          TupleDescInitEntry(tupdesc, (AttrNumber) 2, "setting",
                             TEXTOID, -1, 0, false);

          /* allocate a slot for a tuple with this tupdesc */
          slot = TupleDescGetSlot(tupdesc);
--- 2817,2841 ----
           */
          oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);

!         /*
!          * need a tuple descriptor representing NUM_PG_SETTINGS_ATTS columns
!          * of the appropriate types
!          */
!         tupdesc = CreateTemplateTupleDesc(NUM_PG_SETTINGS_ATTS, false);
          TupleDescInitEntry(tupdesc, (AttrNumber) 1, "name",
                             TEXTOID, -1, 0, false);
          TupleDescInitEntry(tupdesc, (AttrNumber) 2, "setting",
                             TEXTOID, -1, 0, false);
+         TupleDescInitEntry(tupdesc, (AttrNumber) 3, "context",
+                            TEXTOID, -1, 0, false);
+         TupleDescInitEntry(tupdesc, (AttrNumber) 4, "vartype",
+                            TEXTOID, -1, 0, false);
+         TupleDescInitEntry(tupdesc, (AttrNumber) 5, "source",
+                            TEXTOID, -1, 0, false);
+         TupleDescInitEntry(tupdesc, (AttrNumber) 6, "min_val",
+                            TEXTOID, -1, 0, false);
+         TupleDescInitEntry(tupdesc, (AttrNumber) 7, "max_val",
+                            TEXTOID, -1, 0, false);

          /* allocate a slot for a tuple with this tupdesc */
          slot = TupleDescGetSlot(tupdesc);
***************
*** 2732,2740 ****

      if (call_cntr < max_calls)    /* do when there is more left to send */
      {
!         char       *values[2];
!         char       *varname;
!         char       *varval;
          bool        noshow;
          HeapTuple    tuple;
          Datum        result;
--- 2866,2872 ----

      if (call_cntr < max_calls)    /* do when there is more left to send */
      {
!         char       *values[NUM_PG_SETTINGS_ATTS];
          bool        noshow;
          HeapTuple    tuple;
          Datum        result;
***************
*** 2744,2758 ****
           */
          do
          {
!             varval = GetConfigOptionByNum(call_cntr,
!                                           (const char **) &varname,
!                                           &noshow);
              if (noshow)
              {
-                 /* varval is a palloc'd copy, so free it */
-                 if (varval != NULL)
-                     pfree(varval);
-
                  /* bump the counter and get the next config setting */
                  call_cntr = ++funcctx->call_cntr;

--- 2876,2884 ----
           */
          do
          {
!             GetConfigOptionByNum(call_cntr, (const char **) values, &noshow);
              if (noshow)
              {
                  /* bump the counter and get the next config setting */
                  call_cntr = ++funcctx->call_cntr;

***************
*** 2762,2784 ****
              }
          } while (noshow);

-         /*
-          * Prepare a values array for storage in our slot. This should be
-          * an array of C strings which will be processed later by the
-          * appropriate "in" functions.
-          */
-         values[0] = varname;
-         values[1] = varval;
-
          /* build a tuple */
          tuple = BuildTupleFromCStrings(attinmeta, values);

          /* make the tuple into a datum */
          result = TupleGetDatum(slot, tuple);
-
-         /* Clean up */
-         if (varval != NULL)
-             pfree(varval);

          SRF_RETURN_NEXT(funcctx, result);
      }
--- 2888,2898 ----
Index: src/bin/initdb/initdb.sh
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/bin/initdb/initdb.sh,v
retrieving revision 1.192
diff -c -r1.192 initdb.sh
*** src/bin/initdb/initdb.sh    2 Jun 2003 19:00:29 -0000    1.192
--- src/bin/initdb/initdb.sh    26 Jun 2003 03:56:23 -0000
***************
*** 971,977 ****

  CREATE VIEW pg_settings AS \
      SELECT * \
!     FROM pg_show_all_settings() AS A(name text, setting text);

  CREATE RULE pg_settings_u AS \
      ON UPDATE TO pg_settings \
--- 971,979 ----

  CREATE VIEW pg_settings AS \
      SELECT * \
!     FROM pg_show_all_settings() AS A \
!     (name text, setting text, context text, vartype text, \
!      source text, min_val text, max_val text);

  CREATE RULE pg_settings_u AS \
      ON UPDATE TO pg_settings \
Index: src/include/utils/guc.h
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/include/utils/guc.h,v
retrieving revision 1.32
diff -c -r1.32 guc.h
*** src/include/utils/guc.h    11 Jun 2003 18:01:14 -0000    1.32
--- src/include/utils/guc.h    26 Jun 2003 02:58:54 -0000
***************
*** 49,63 ****
   * we don't yet know if the user is a superuser.
   *
   * USERSET options can be set by anyone any time.
   */
  typedef enum
  {
!     PGC_INTERNAL,
!     PGC_POSTMASTER,
!     PGC_SIGHUP,
!     PGC_BACKEND,
!     PGC_SUSET,
!     PGC_USERSET
  } GucContext;

  /*
--- 49,65 ----
   * we don't yet know if the user is a superuser.
   *
   * USERSET options can be set by anyone any time.
+  *
+  * Keep in sync with GucContextName in guc.c
   */
  typedef enum
  {
!     PGC_INTERNAL = 0,
!     PGC_POSTMASTER = 1,
!     PGC_SIGHUP = 2,
!     PGC_BACKEND = 3,
!     PGC_SUSET = 4,
!     PGC_USERSET = 5
  } GucContext;

  /*
***************
*** 69,74 ****
--- 71,78 ----
   * Sources <= PGC_S_OVERRIDE will set the default used by RESET, as well
   * as the current value.  Note that source == PGC_S_OVERRIDE should be
   * used when setting a PGC_INTERNAL option.
+  *
+  * Keep in sync with GucSourceName in guc.c
   */
  typedef enum
  {
***************
*** 83,89 ****
      PGC_S_SESSION = 8            /* SET command */
  } GucSource;

-
  /* GUC vars that are actually declared in guc.c, rather than elsewhere */
  extern bool log_statement;
  extern bool log_duration;
--- 87,92 ----
***************
*** 123,129 ****
  extern void ShowGUCConfigOption(const char *name, DestReceiver *dest);
  extern void ShowAllGUCConfig(DestReceiver *dest);
  extern char *GetConfigOptionByName(const char *name, const char **varname);
! extern char *GetConfigOptionByNum(int varnum, const char **varname, bool *noshow);
  extern int    GetNumConfigOptions(void);

  extern void SetPGVariable(const char *name, List *args, bool is_local);
--- 126,132 ----
  extern void ShowGUCConfigOption(const char *name, DestReceiver *dest);
  extern void ShowAllGUCConfig(DestReceiver *dest);
  extern char *GetConfigOptionByName(const char *name, const char **varname);
! extern void GetConfigOptionByNum(int varnum, const char **values, bool *noshow);
  extern int    GetNumConfigOptions(void);

  extern void SetPGVariable(const char *name, List *args, bool is_local);
Index: src/test/regress/expected/rangefuncs.out
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/test/regress/expected/rangefuncs.out,v
retrieving revision 1.7
diff -c -r1.7 rangefuncs.out
*** src/test/regress/expected/rangefuncs.out    13 Feb 2003 20:45:22 -0000    1.7
--- src/test/regress/expected/rangefuncs.out    26 Jun 2003 02:58:54 -0000
***************
*** 1,4 ****
! SELECT * FROM pg_settings WHERE name LIKE 'enable%';
         name       | setting
  ------------------+---------
   enable_hashagg   | on
--- 1,4 ----
! SELECT name, setting FROM pg_settings WHERE name LIKE 'enable%';
         name       | setting
  ------------------+---------
   enable_hashagg   | on
Index: src/test/regress/expected/rules.out
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/test/regress/expected/rules.out,v
retrieving revision 1.75
diff -c -r1.75 rules.out
*** src/test/regress/expected/rules.out    26 May 2003 00:11:28 -0000    1.75
--- src/test/regress/expected/rules.out    26 Jun 2003 04:40:11 -0000
***************
*** 1273,1279 ****
   pg_indexes               | SELECT n.nspname AS schemaname, c.relname AS tablename, i.relname AS indexname,
pg_get_indexdef(i.oid)AS indexdef FROM (((pg_index x JOIN pg_class c ON ((c.oid = x.indrelid))) JOIN pg_class i ON
((i.oid= x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE ((c.relkind = 'r'::"char") AND
(i.relkind= 'i'::"char")); 
   pg_locks                 | SELECT l.relation, l."database", l."transaction", l.pid, l."mode", l.granted FROM
pg_lock_status()l(relation oid, "database" oid, "transaction" xid, pid integer, "mode" text, granted boolean); 
   pg_rules                 | SELECT n.nspname AS schemaname, c.relname AS tablename, r.rulename, pg_get_ruledef(r.oid)
ASdefinition FROM ((pg_rewrite r JOIN pg_class c ON ((c.oid = r.ev_class))) LEFT JOIN pg_namespace n ON ((n.oid =
c.relnamespace)))WHERE (r.rulename <> '_RETURN'::name); 
!  pg_settings              | SELECT a.name, a.setting FROM pg_show_all_settings() a(name text, setting text);
   pg_stat_activity         | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid,
pg_stat_get_backend_userid(s.backendid)AS usesysid, u.usename, pg_stat_get_backend_activity(s.backendid) AS
current_query,pg_stat_get_backend_activity_start(s.backendid) AS query_start FROM pg_database d, (SELECT
pg_stat_get_backend_idset()AS backendid) s, pg_shadow u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND
(pg_stat_get_backend_userid(s.backendid)= u.usesysid)); 
   pg_stat_all_indexes      | SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname
ASindexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read,
pg_stat_get_tuples_fetched(i.oid)AS idx_tup_fetch FROM (((pg_class c JOIN pg_index x ON ((c.oid = x.indrelid))) JOIN
pg_classi ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind =
'r'::"char");
   pg_stat_all_tables       | SELECT c.oid AS relid, n.nspname AS schemaname, c.relname, pg_stat_get_numscans(c.oid) AS
seq_scan,pg_stat_get_tuples_returned(c.oid) AS seq_tup_read, sum(pg_stat_get_numscans(i.indexrelid)) AS idx_scan,
sum(pg_stat_get_tuples_fetched(i.indexrelid))AS idx_tup_fetch, pg_stat_get_tuples_inserted(c.oid) AS n_tup_ins,
pg_stat_get_tuples_updated(c.oid)AS n_tup_upd, pg_stat_get_tuples_deleted(c.oid) AS n_tup_del FROM ((pg_class c LEFT
JOINpg_index i ON ((c.oid = i.indrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind =
'r'::"char")GROUP BY c.oid, n.nspname, c.relname; 
--- 1273,1279 ----
   pg_indexes               | SELECT n.nspname AS schemaname, c.relname AS tablename, i.relname AS indexname,
pg_get_indexdef(i.oid)AS indexdef FROM (((pg_index x JOIN pg_class c ON ((c.oid = x.indrelid))) JOIN pg_class i ON
((i.oid= x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE ((c.relkind = 'r'::"char") AND
(i.relkind= 'i'::"char")); 
   pg_locks                 | SELECT l.relation, l."database", l."transaction", l.pid, l."mode", l.granted FROM
pg_lock_status()l(relation oid, "database" oid, "transaction" xid, pid integer, "mode" text, granted boolean); 
   pg_rules                 | SELECT n.nspname AS schemaname, c.relname AS tablename, r.rulename, pg_get_ruledef(r.oid)
ASdefinition FROM ((pg_rewrite r JOIN pg_class c ON ((c.oid = r.ev_class))) LEFT JOIN pg_namespace n ON ((n.oid =
c.relnamespace)))WHERE (r.rulename <> '_RETURN'::name); 
!  pg_settings              | SELECT a.name, a.setting, a.context, a.vartype, a.source, a.min_val, a.max_val FROM
pg_show_all_settings()a(name text, setting text, context text, vartype text, source text, min_val text, max_val text); 
   pg_stat_activity         | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid,
pg_stat_get_backend_userid(s.backendid)AS usesysid, u.usename, pg_stat_get_backend_activity(s.backendid) AS
current_query,pg_stat_get_backend_activity_start(s.backendid) AS query_start FROM pg_database d, (SELECT
pg_stat_get_backend_idset()AS backendid) s, pg_shadow u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND
(pg_stat_get_backend_userid(s.backendid)= u.usesysid)); 
   pg_stat_all_indexes      | SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname
ASindexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read,
pg_stat_get_tuples_fetched(i.oid)AS idx_tup_fetch FROM (((pg_class c JOIN pg_index x ON ((c.oid = x.indrelid))) JOIN
pg_classi ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind =
'r'::"char");
   pg_stat_all_tables       | SELECT c.oid AS relid, n.nspname AS schemaname, c.relname, pg_stat_get_numscans(c.oid) AS
seq_scan,pg_stat_get_tuples_returned(c.oid) AS seq_tup_read, sum(pg_stat_get_numscans(i.indexrelid)) AS idx_scan,
sum(pg_stat_get_tuples_fetched(i.indexrelid))AS idx_tup_fetch, pg_stat_get_tuples_inserted(c.oid) AS n_tup_ins,
pg_stat_get_tuples_updated(c.oid)AS n_tup_upd, pg_stat_get_tuples_deleted(c.oid) AS n_tup_del FROM ((pg_class c LEFT
JOINpg_index i ON ((c.oid = i.indrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind =
'r'::"char")GROUP BY c.oid, n.nspname, c.relname; 
Index: src/test/regress/sql/rangefuncs.sql
===================================================================
RCS file: /opt/src/cvs/pgsql-server/src/test/regress/sql/rangefuncs.sql,v
retrieving revision 1.4
diff -c -r1.4 rangefuncs.sql
*** src/test/regress/sql/rangefuncs.sql    30 Aug 2002 19:56:49 -0000    1.4
--- src/test/regress/sql/rangefuncs.sql    26 Jun 2003 02:58:54 -0000
***************
*** 1,4 ****
! SELECT * FROM pg_settings WHERE name LIKE 'enable%';

  CREATE TABLE foo2(fooid int, f2 int);
  INSERT INTO foo2 VALUES(1, 11);
--- 1,4 ----
! SELECT name, setting FROM pg_settings WHERE name LIKE 'enable%';

  CREATE TABLE foo2(fooid int, f2 int);
  INSERT INTO foo2 VALUES(1, 11);