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| 1 | +/* contrib/pg_visibility/pg_visibility--1.0.sql */ |
| 2 | + |
| 3 | +-- complain if script is sourced in psql, rather than via CREATE EXTENSION |
| 4 | +\echo Use "CREATE EXTENSION pg_visibility" to load this file. \quit |
| 5 | + |
| 6 | +-- Show visibility map information. |
| 7 | +CREATE FUNCTION pg_visibility_map(regclass, blkno bigint, |
| 8 | + all_visible OUT boolean, |
| 9 | + all_frozen OUT boolean) |
| 10 | +RETURNS record |
| 11 | +AS 'MODULE_PATHNAME', 'pg_visibility_map' |
| 12 | +LANGUAGE C STRICT; |
| 13 | + |
| 14 | +-- Show visibility map and page-level visibility information. |
| 15 | +CREATE FUNCTION pg_visibility(regclass, blkno bigint, |
| 16 | + all_visible OUT boolean, |
| 17 | + all_frozen OUT boolean, |
| 18 | + pd_all_visible OUT boolean) |
| 19 | +RETURNS record |
| 20 | +AS 'MODULE_PATHNAME', 'pg_visibility' |
| 21 | +LANGUAGE C STRICT; |
| 22 | + |
| 23 | +-- Show visibility map information for each block in a relation. |
| 24 | +CREATE FUNCTION pg_visibility_map(regclass, blkno OUT bigint, |
| 25 | + all_visible OUT boolean, |
| 26 | + all_frozen OUT boolean) |
| 27 | +RETURNS SETOF record |
| 28 | +AS 'MODULE_PATHNAME', 'pg_visibility_map_rel' |
| 29 | +LANGUAGE C STRICT; |
| 30 | + |
| 31 | +-- Show visibility map and page-level visibility information for each block. |
| 32 | +CREATE FUNCTION pg_visibility(regclass, blkno OUT bigint, |
| 33 | + all_visible OUT boolean, |
| 34 | + all_frozen OUT boolean, |
| 35 | + pd_all_visible OUT boolean) |
| 36 | +RETURNS SETOF record |
| 37 | +AS 'MODULE_PATHNAME', 'pg_visibility_rel' |
| 38 | +LANGUAGE C STRICT; |
| 39 | + |
| 40 | +-- Show summary of visibility map bits for a relation. |
| 41 | +CREATE FUNCTION pg_visibility_map_summary(regclass, |
| 42 | + OUT all_visible bigint, OUT all_frozen bigint) |
| 43 | +RETURNS record |
| 44 | +AS 'MODULE_PATHNAME', 'pg_visibility_map_summary' |
| 45 | +LANGUAGE C STRICT; |
| 46 | + |
| 47 | +-- Don't want these to be available to public. |
| 48 | +REVOKE ALL ON FUNCTION pg_visibility_map(regclass, bigint) FROM PUBLIC; |
| 49 | +REVOKE ALL ON FUNCTION pg_visibility(regclass, bigint) FROM PUBLIC; |
| 50 | +REVOKE ALL ON FUNCTION pg_visibility_map(regclass) FROM PUBLIC; |
| 51 | +REVOKE ALL ON FUNCTION pg_visibility(regclass) FROM PUBLIC; |
| 52 | +REVOKE ALL ON FUNCTION pg_visibility_map_summary(regclass) FROM PUBLIC; |
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