/log/

/results/

/tmp_check/

MODULE_big = tsm_system_time

OBJS = tsm_system_time.o $(WIN32RES)

PGFILEDESC = "tsm_system_time - SYSTEM TABLESAMPLE method which accepts number rows of as a limit"

EXTENSION = tsm_system_time

DATA = tsm_system_time--1.0.sql

REGRESS = tsm_system_time

ifdef USE_PGXS

PG_CONFIG = pg_config

PGXS := $(shell $(PG_CONFIG) --pgxs)

include $(PGXS)

else

subdir = contrib/tsm_system_time

top_builddir = ../..

include $(top_builddir)/src/Makefile.global

include $(top_srcdir)/contrib/contrib-global.mk

CREATE EXTENSION tsm_system_time;

CREATE TABLE test_tablesample (id int, name text) WITH (fillfactor=10); -- force smaller pages so we don't have to load too much data to get multiple pages

INSERT INTO test_tablesample SELECT i, repeat(i::text, 1000) FROM generate_series(0, 30) s(i) ORDER BY i;

ANALYZE test_tablesample;

SELECT count(*) FROM test_tablesample TABLESAMPLE system_time (1000);

count

-------

31

(1 row)

SELECT id FROM test_tablesample TABLESAMPLE system_time (1000) REPEATABLE (5432);

id

----

7

14

21

28

4

11

18

25

1

8

15

22

29

5

12

19

26

2

9

16

23

30

6

13

20

27

3

10

17

24

0

(31 rows)

EXPLAIN SELECT id FROM test_tablesample TABLESAMPLE system_time (100) REPEATABLE (10);

QUERY PLAN

------------------------------------------------------------------------------------

Sample Scan (system_time) on test_tablesample (cost=0.00..100.25 rows=25 width=4)

(1 row)

-- done

DROP TABLE test_tablesample CASCADE;

CREATE EXTENSION tsm_system_time;

CREATE TABLE test_tablesample (id int, name text) WITH (fillfactor=10); -- force smaller pages so we don't have to load too much data to get multiple pages

INSERT INTO test_tablesample SELECT i, repeat(i::text, 1000) FROM generate_series(0, 30) s(i) ORDER BY i;

ANALYZE test_tablesample;

SELECT count(*) FROM test_tablesample TABLESAMPLE system_time (1000);

SELECT id FROM test_tablesample TABLESAMPLE system_time (1000) REPEATABLE (5432);

EXPLAIN SELECT id FROM test_tablesample TABLESAMPLE system_time (100) REPEATABLE (10);

DROP TABLE test_tablesample CASCADE;

\echo Use "CREATE EXTENSION tsm_system_time" to load this file. \quit

CREATE FUNCTION tsm_system_time_init(internal, int4, int4)

RETURNS void

AS 'MODULE_PATHNAME'

LANGUAGE C STRICT;

CREATE FUNCTION tsm_system_time_nextblock(internal)

RETURNS int4

AS 'MODULE_PATHNAME'

LANGUAGE C STRICT;

CREATE FUNCTION tsm_system_time_nexttuple(internal, int4, int2)

RETURNS int2

AS 'MODULE_PATHNAME'

LANGUAGE C STRICT;

CREATE FUNCTION tsm_system_time_end(internal)

RETURNS void

AS 'MODULE_PATHNAME'

LANGUAGE C STRICT;

CREATE FUNCTION tsm_system_time_reset(internal)

RETURNS void

AS 'MODULE_PATHNAME'

LANGUAGE C STRICT;

CREATE FUNCTION tsm_system_time_cost(internal, internal, internal, internal, internal, internal, internal)

RETURNS void

AS 'MODULE_PATHNAME'

LANGUAGE C STRICT;

INSERT INTO pg_tablesample_method VALUES('system_time', false, true,

'tsm_system_time_init', 'tsm_system_time_nextblock',

'tsm_system_time_nexttuple', '-', 'tsm_system_time_end',

'tsm_system_time_reset', 'tsm_system_time_cost');