Hello,
I did package for packing and unpacking large time series (in text format)
into binary object. You can use it. Its very fast, storing 3 cols and
90000 rows ~ 10sec(P160).
testdb011=# select * FROM time_series_unpack(
testdb011(# time_series_pack(
testdb011(# '10.23, 10.21, 10.222'||chr(10)||
testdb011(# '1.1, 2.5,3.10 '||chr(10)||
testdb011(# '1.1, 1.2,1.5'),1);
row | f
-----+-------
1 | 10.23
2 | 1.1
3 | 1.1
(3 rows)
testdb011=# select * FROM time_series_unpack(
testdb011(# time_series_pack(
testdb011(# '10.23, 10.21, 10.222'||chr(10)||
testdb011(# '1.1, 2.5,3.10 '||chr(10)||
testdb011(# '1.1, 1.2,1.5'),3);
row | f
-----+--------
1 | 10.222
2 | 3.1
3 | 1.5
(3 rows)
testdb011=# select avg(f), min(f), max(f), count(f) from (
testdb011(# select * FROM time_series_unpack(
testdb011(# time_series_pack(
testdb011(# '10.23, 10.21, 10.222'||chr(10)||
testdb011(# '1.1,2.5,3.10 '||chr(10)||
testdb011(# '1.1, 1.2, 1.5'),3)) d;
avg | min | max | count
------------------+-----+--------+-------
4.94066667556763 | 1.5 | 10.222 | 3
(1 row)
Regards
Pavel Stehule
Attachment:
ts.tar.gz
Description: GNU Zip compressed data
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