Home/ Questions/Q 9082095
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-16T20:28:29+00:00

I have a temporal database and I wanted to create a subset based on

  • 0

I have a temporal database and I wanted to create a subset based on a specific time and date. For example I want to have a subset from 2007-09-29 00:05 to 2007-09-29 01:30.

Sample Table s_2:

       temp    DateeTIMEE
1     -1.64 2007-09-29 00:01:09
2     -1.76 2007-09-29 00:03:09
3     -1.83 2007-09-29 00:05:09
4     -1.86 2007-09-29 00:07:09
5     -1.94 2007-09-29 00:09:09
6     -1.87 2007-09-29 00:11:09
7     -1.87 2007-09-29 00:13:09
8     -1.80 2007-09-29 00:15:09
9     -1.64 2007-09-29 00:17:09
10    -1.60 2007-09-29 00:19:09
11    -1.90 2007-09-29 00:21:09
12    -2.08 2007-09-29 00:23:09
13    -1.94 2007-09-29 00:25:09
14    -2.12 2007-09-29 00:27:09
15    -1.87 2007-09-29 00:29:09
16    -2.18 2007-09-29 00:31:09
17    -1.98 2007-09-29 00:33:09
18    -1.73 2007-09-29 00:35:09
19    -1.84 2007-09-29 00:37:09
20    -2.04 2007-09-29 00:39:09
21    -1.86 2007-09-29 00:41:09
22    -1.94 2007-09-29 00:43:09
23    -1.77 2007-09-29 00:45:09
24    -1.78 2007-09-29 00:47:09
25    -1.50 2007-09-29 00:49:09
26    -1.46 2007-09-29 00:51:09
27    -1.72 2007-09-29 00:53:09
28    -1.67 2007-09-29 00:55:09
29    -1.56 2007-09-29 00:57:09
30    -1.69 2007-09-29 00:59:09
31    -1.97 2007-09-29 01:01:09
32    -1.79 2007-09-29 01:03:09
33    -1.79 2007-09-29 01:05:09
34    -1.84 2007-09-29 01:07:09
35    -1.91 2007-09-29 01:09:09
36    -1.87 2007-09-29 01:11:09
37    -1.98 2007-09-29 01:13:09
38    -1.83 2007-09-29 01:15:09
39    -1.88 2007-09-29 01:17:09
40    -1.88 2007-09-29 01:19:09
41    -1.78 2007-09-29 01:21:09
42    -1.78 2007-09-29 01:23:09
43    -1.66 2007-09-29 01:25:09
44    -1.70 2007-09-29 01:27:09
45    -1.46 2007-09-29 01:29:09
46    -1.36 2007-09-29 01:31:09
47    -1.40 2007-09-29 01:33:09
48    -1.34 2007-09-29 01:35:09
49    -1.34 2007-09-29 01:37:09
50    -1.30 2007-09-29 01:39:09
51    -1.36 2007-09-29 01:41:09
52    -1.40 2007-09-29 01:43:09
53    -1.43 2007-09-29 01:45:09
54    -1.38 2007-09-29 01:47:09
55    -1.40 2007-09-29 01:49:09
56    -1.42 2007-09-29 01:51:09
57    -1.47 2007-09-29 01:53:09
58    -1.66 2007-09-29 01:55:09
59    -1.84 2007-09-29 01:57:09
60    -1.92 2007-09-29 01:59:09
61    -1.88 2007-09-29 02:01:09
62    -2.11 2007-09-29 02:03:09
63    -1.91 2007-09-29 02:05:09
64    -2.04 2007-09-29 02:07:09
65    -1.94 2007-09-29 02:09:09
66    -1.92 2007-09-29 02:11:09
67    -1.80 2007-09-29 02:13:09
68    -1.74 2007-09-29 02:15:09
69    -1.74 2007-09-29 02:17:09
70    -1.76 2007-09-29 02:19:09
71    -1.74 2007-09-29 02:21:09
72    -1.80 2007-09-29 02:23:09
73    -1.80 2007-09-29 02:25:09
74    -1.80 2007-09-29 02:27:09
75    -1.82 2007-09-29 02:29:09
76    -1.90 2007-09-29 02:31:09
77    -1.93 2007-09-29 02:33:09
78    -2.06 2007-09-29 02:35:09
79    -2.08 2007-09-29 02:37:09
80    -1.95 2007-09-29 02:39:09
81    -1.98 2007-09-29 02:41:09
82    -2.32 2007-09-29 02:43:09
83    -1.86 2007-09-29 02:45:09
84    -1.97 2007-09-29 02:47:09
85    -1.64 2007-09-29 02:49:09
86    -2.00 2007-09-29 02:51:09
87    -1.48 2007-09-29 02:53:09
88    -1.74 2007-09-29 02:55:09
89    -1.85 2007-09-29 02:57:09
90    -1.82 2007-09-29 02:59:09
91    -1.82 2007-09-29 03:01:09
92    -1.92 2007-09-29 03:03:09
93    -1.80 2007-09-29 03:05:09
94    -1.54 2007-09-29 03:07:09
95    -1.36 2007-09-29 03:09:09
96    -1.50 2007-09-29 03:11:09
97    -1.59 2007-09-29 03:13:09
98    -1.60 2007-09-29 03:15:09
99    -1.58 2007-09-29 03:17:09
100   -1.81 2007-09-29 03:19:09
101   -2.16 2007-09-29 03:21:09
102   -1.97 2007-09-29 03:23:09
103   -1.94 2007-09-29 03:25:09
104   -2.29 2007-09-29 03:27:09
105   -2.46 2007-09-29 03:29:09
106   -2.42 2007-09-29 03:31:09
107   -2.34 2007-09-29 03:33:09
108   -2.38 2007-09-29 03:35:09
109   -2.44 2007-09-29 03:37:09
110   -2.28 2007-09-29 03:39:09
111   -2.24 2007-09-29 03:41:09
112   -2.26 2007-09-29 03:43:09

Expected Results, new subset:

  3     -1.83 2007-09-29 00:05:09
    4     -1.86 2007-09-29 00:07:09
    5     -1.94 2007-09-29 00:09:09
    6     -1.87 2007-09-29 00:11:09
    7     -1.87 2007-09-29 00:13:09
    8     -1.80 2007-09-29 00:15:09
    9     -1.64 2007-09-29 00:17:09
    10    -1.60 2007-09-29 00:19:09
    11    -1.90 2007-09-29 00:21:09
    12    -2.08 2007-09-29 00:23:09
    13    -1.94 2007-09-29 00:25:09
    14    -2.12 2007-09-29 00:27:09
    15    -1.87 2007-09-29 00:29:09
    16    -2.18 2007-09-29 00:31:09
    17    -1.98 2007-09-29 00:33:09
    18    -1.73 2007-09-29 00:35:09
    19    -1.84 2007-09-29 00:37:09
    20    -2.04 2007-09-29 00:39:09
    21    -1.86 2007-09-29 00:41:09
    22    -1.94 2007-09-29 00:43:09
    23    -1.77 2007-09-29 00:45:09
    24    -1.78 2007-09-29 00:47:09
    25    -1.50 2007-09-29 00:49:09
    26    -1.46 2007-09-29 00:51:09
    27    -1.72 2007-09-29 00:53:09
    28    -1.67 2007-09-29 00:55:09
    29    -1.56 2007-09-29 00:57:09
    30    -1.69 2007-09-29 00:59:09
    31    -1.97 2007-09-29 01:01:09
    32    -1.79 2007-09-29 01:03:09
    33    -1.79 2007-09-29 01:05:09
    34    -1.84 2007-09-29 01:07:09
    35    -1.91 2007-09-29 01:09:09
    36    -1.87 2007-09-29 01:11:09
    37    -1.98 2007-09-29 01:13:09
    38    -1.83 2007-09-29 01:15:09
    39    -1.88 2007-09-29 01:17:09
    40    -1.88 2007-09-29 01:19:09
    41    -1.78 2007-09-29 01:21:09
    42    -1.78 2007-09-29 01:23:09
    43    -1.66 2007-09-29 01:25:09
    44    -1.70 2007-09-29 01:27:09
    45    -1.46 2007-09-29 01:29:09
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    This is very basic SQL; I strongly recommend that you have a look at the PostgreSQL manual, in particular the date/time functions and operators section and the PostgreSQL tutorial.

    The basic usage you want is:

    SELECT * FROM my_table
WHERE "DateeTIMEE" BETWEEN '2007-09-29 00:05:09' AND '2007-09-29 01:29:09';

    Alternately, just use:

    SELECT * FROM my_table
WHERE "DateeTIMEE" >= '2007-09-29 00:05:09' AND "DateTIMEE" <= '2007-09-29 01:29:09';

    Note that I’ve double-quoted "DateTIMEE". This is because PostgreSQL downcases identifiers unless they’re quoted, and you seem to have defined it with mixed case. If Pg complains that the column doesn’t exist, maybe you defined it without double-quotes and it got downcased. Try without the double quotes if you have issues.

    • 0