CREATE VIEW pg_user AS

SELECT

usename,

usesysid,

usecreatedb,

usesuper,

usecatupd,

'********'::text as passwd,

valuntil,

useconfig

FROM pg_shadow;

CREATE VIEW pg_rules AS

SELECT

N.nspname AS schemaname,

C.relname AS tablename,

R.rulename AS rulename,

pg_get_ruledef(R.oid) AS definition

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';

CREATE VIEW pg_views AS

SELECT

N.nspname AS schemaname,

C.relname AS viewname,

pg_get_userbyid(C.relowner) AS viewowner,

pg_get_viewdef(C.oid) AS definition

FROM pg_class C LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE C.relkind = 'v';

CREATE VIEW pg_tables AS

SELECT

N.nspname AS schemaname,

C.relname AS tablename,

pg_get_userbyid(C.relowner) AS tableowner,

C.relhasindex AS hasindexes,

C.relhasrules AS hasrules,

(C.reltriggers > 0) AS hastriggers

FROM pg_class C LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE C.relkind = 'r';

CREATE VIEW pg_indexes AS

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' AND I.relkind = 'i';

CREATE VIEW pg_stats AS

SELECT

nspname AS schemaname,

relname AS tablename,

attname AS attname,

stanullfrac AS null_frac,

stawidth AS avg_width,

stadistinct AS n_distinct,

CASE 1

WHEN stakind1 THEN stavalues1

WHEN stakind2 THEN stavalues2

WHEN stakind3 THEN stavalues3

WHEN stakind4 THEN stavalues4

END AS most_common_vals,

CASE 1

WHEN stakind1 THEN stanumbers1

WHEN stakind2 THEN stanumbers2

WHEN stakind3 THEN stanumbers3

WHEN stakind4 THEN stanumbers4

END AS most_common_freqs,

CASE 2

WHEN stakind1 THEN stavalues1

WHEN stakind2 THEN stavalues2

WHEN stakind3 THEN stavalues3

WHEN stakind4 THEN stavalues4

END AS histogram_bounds,

CASE 3

WHEN stakind1 THEN stanumbers1[1]

WHEN stakind2 THEN stanumbers2[1]

WHEN stakind3 THEN stanumbers3[1]

WHEN stakind4 THEN stanumbers4[1]

END AS correlation

FROM pg_statistic s JOIN pg_class c ON (c.oid = s.starelid)

JOIN pg_attribute a ON (c.oid = attrelid AND attnum = s.staattnum)

LEFT JOIN pg_namespace n ON (n.oid = c.relnamespace)

WHERE has_table_privilege(c.oid, 'select');

REVOKE ALL on pg_statistic FROM public;

CREATE VIEW pg_stat_all_tables AS

SELECT

C.oid AS relid,

N.nspname AS schemaname,

C.relname AS 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 JOIN

pg_index I ON C.oid = I.indrelid

LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE C.relkind = 'r'

GROUP BY C.oid, N.nspname, C.relname;

CREATE VIEW pg_stat_sys_tables AS

SELECT * FROM pg_stat_all_tables

WHERE schemaname IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_stat_user_tables AS

SELECT * FROM pg_stat_all_tables

WHERE schemaname NOT IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_statio_all_tables AS

SELECT

C.oid AS relid,

N.nspname AS schemaname,

C.relname AS relname,

pg_stat_get_blocks_fetched(C.oid) -

pg_stat_get_blocks_hit(C.oid) AS heap_blks_read,

pg_stat_get_blocks_hit(C.oid) AS heap_blks_hit,

sum(pg_stat_get_blocks_fetched(I.indexrelid) -

pg_stat_get_blocks_hit(I.indexrelid)) AS idx_blks_read,

sum(pg_stat_get_blocks_hit(I.indexrelid)) AS idx_blks_hit,

pg_stat_get_blocks_fetched(T.oid) -

pg_stat_get_blocks_hit(T.oid) AS toast_blks_read,

pg_stat_get_blocks_hit(T.oid) AS toast_blks_hit,

pg_stat_get_blocks_fetched(X.oid) -

pg_stat_get_blocks_hit(X.oid) AS tidx_blks_read,

pg_stat_get_blocks_hit(X.oid) AS tidx_blks_hit

FROM pg_class C LEFT JOIN

pg_index I ON C.oid = I.indrelid LEFT JOIN

pg_class T ON C.reltoastrelid = T.oid LEFT JOIN

pg_class X ON T.reltoastidxid = X.oid

LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE C.relkind = 'r'

GROUP BY C.oid, N.nspname, C.relname, T.oid, X.oid;

CREATE VIEW pg_statio_sys_tables AS

SELECT * FROM pg_statio_all_tables

WHERE schemaname IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_statio_user_tables AS

SELECT * FROM pg_statio_all_tables

WHERE schemaname NOT IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_stat_all_indexes AS

SELECT

C.oid AS relid,

I.oid AS indexrelid,

N.nspname AS schemaname,

C.relname AS relname,

I.relname AS indexrelname,

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_class I ON I.oid = X.indexrelid

LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE C.relkind = 'r';

CREATE VIEW pg_stat_sys_indexes AS

SELECT * FROM pg_stat_all_indexes

WHERE schemaname IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_stat_user_indexes AS

SELECT * FROM pg_stat_all_indexes

WHERE schemaname NOT IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_statio_all_indexes AS

SELECT

C.oid AS relid,

I.oid AS indexrelid,

N.nspname AS schemaname,

C.relname AS relname,

I.relname AS indexrelname,

pg_stat_get_blocks_fetched(I.oid) -

pg_stat_get_blocks_hit(I.oid) AS idx_blks_read,

pg_stat_get_blocks_hit(I.oid) AS idx_blks_hit

FROM pg_class C JOIN

pg_index X 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';

CREATE VIEW pg_statio_sys_indexes AS

SELECT * FROM pg_statio_all_indexes

WHERE schemaname IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_statio_user_indexes AS

SELECT * FROM pg_statio_all_indexes

WHERE schemaname NOT IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_statio_all_sequences AS

SELECT

C.oid AS relid,

N.nspname AS schemaname,

C.relname AS relname,

pg_stat_get_blocks_fetched(C.oid) -

pg_stat_get_blocks_hit(C.oid) AS blks_read,

pg_stat_get_blocks_hit(C.oid) AS blks_hit

FROM pg_class C

LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)

WHERE C.relkind = 'S';

CREATE VIEW pg_statio_sys_sequences AS

SELECT * FROM pg_statio_all_sequences

WHERE schemaname IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_statio_user_sequences AS

SELECT * FROM pg_statio_all_sequences

WHERE schemaname NOT IN ('pg_catalog', 'pg_toast');

CREATE VIEW pg_stat_activity AS

SELECT

D.oid AS datid,

D.datname AS datname,

pg_stat_get_backend_pid(S.backendid) AS procpid,

pg_stat_get_backend_userid(S.backendid) AS usesysid,

U.usename AS 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) AS S,

pg_shadow U

WHERE pg_stat_get_backend_dbid(S.backendid) = D.oid AND

pg_stat_get_backend_userid(S.backendid) = U.usesysid;

CREATE VIEW pg_stat_database AS

SELECT

D.oid AS datid,

D.datname AS datname,

pg_stat_get_db_numbackends(D.oid) AS numbackends,

pg_stat_get_db_xact_commit(D.oid) AS xact_commit,

pg_stat_get_db_xact_rollback(D.oid) AS xact_rollback,

pg_stat_get_db_blocks_fetched(D.oid) -

pg_stat_get_db_blocks_hit(D.oid) AS blks_read,

pg_stat_get_db_blocks_hit(D.oid) AS blks_hit

FROM pg_database D;

CREATE VIEW pg_locks AS

SELECT *

FROM pg_lock_status() AS L(relation oid, database oid,

transaction xid, pid int4, mode text, granted boolean);

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

WHERE new.name = old.name DO

SELECT set_config(old.name, new.setting, 'f');

CREATE RULE pg_settings_n AS

ON UPDATE TO pg_settings

DO INSTEAD NOTHING;