File: time.sql

package info (click to toggle)
postgresql-9.4 9.4.18-0%2Bdeb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 121,624 kB
  • sloc: ansic: 672,040; sql: 55,424; yacc: 28,505; perl: 10,067; lex: 6,757; sh: 5,199; makefile: 4,103; asm: 65; sed: 15; python: 12
file content (37 lines) | stat: -rw-r--r-- 990 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
-- time check

CREATE TABLE timetmp (a time);

\copy timetmp from 'data/time.data'

SET enable_seqscan=on;

SELECT count(*) FROM timetmp WHERE a <  '10:57:11';

SELECT count(*) FROM timetmp WHERE a <= '10:57:11';

SELECT count(*) FROM timetmp WHERE a  = '10:57:11';

SELECT count(*) FROM timetmp WHERE a >= '10:57:11';

SELECT count(*) FROM timetmp WHERE a >  '10:57:11';

SELECT a, a <-> '10:57:11' FROM timetmp ORDER BY a <-> '10:57:11' LIMIT 3;

CREATE INDEX timeidx ON timetmp USING gist ( a );

SET enable_seqscan=off;

SELECT count(*) FROM timetmp WHERE a <  '10:57:11'::time;

SELECT count(*) FROM timetmp WHERE a <= '10:57:11'::time;

SELECT count(*) FROM timetmp WHERE a  = '10:57:11'::time;

SELECT count(*) FROM timetmp WHERE a >= '10:57:11'::time;

SELECT count(*) FROM timetmp WHERE a >  '10:57:11'::time;

EXPLAIN (COSTS OFF)
SELECT a, a <-> '10:57:11' FROM timetmp ORDER BY a <-> '10:57:11' LIMIT 3;
SELECT a, a <-> '10:57:11' FROM timetmp ORDER BY a <-> '10:57:11' LIMIT 3;