The GNSS systems do of course know when leap seconds occur, one of their
purposes is to communicate accurately UTC. But unlike system clocks of
computers which often are halted during leap seconds or slowed down before
them, to avoid complications, the satellites will transmit their codes
strictly
volume.
>-Original Message-
>From: sqlite-users [mailto:sqlite-users-
>boun...@mailinglists.sqlite.org] On Behalf Of Wout Mertens
>Sent: Saturday, 9 June, 2018 06:22
>To: SQLite mailing list
>Subject: Re: [sqlite] Selecting multiple similar columnname.
>
>So the
So the satellites don't get leapsecond updates? I don't understand why it
can't just be an epoch…
On Sat, Jun 9, 2018, 8:39 AM Stephan Buchert wrote:
> To take care of the leap seconds every ~1.5 years or so, you need a day
> segmented time stamp and a three column primary key:
>
> CREATE TABLE
To take care of the leap seconds every ~1.5 years or so, you need a day
segmented time stamp and a three column primary key:
CREATE TABLE satlog (
sat INTEGER,
day2000 INTEGER, -- days since 2000-01-01
msec INTEGER, -- milliseconds of day, just in case we ever have to
deal with subs
I forgot to add, if you do change the schema as advised, the query you
wanted will become the very easy:
SELECT SatNum FROM SatLog WHERE SNR > 30;
Which will return one or more satellites as rows, or you can do as
Gunter suggested:
SELECT group_concat(SatNum, '; ') FROM SatLog WHERE SNR > 30
On 2018/06/08 12:52 PM, Mukesh Kumar wrote:
Hi Ryan,
Thanks for the advice.
I cant share the exact Schema, however i can give an idea.
I am trying to store GNSS satellite info, which is streaming every second.
My Primary Key is the Timestamp at which i have got the information.. And
other colu
SQLite mailing list
Sent: Friday, June 8, 2018, 12:52:58
Subject: [sqlite] Selecting multiple similar columnname.
Hi Ryan,
Thanks for the advice.
I cant share the exact Schema, however i can give an idea.
I am trying to store GNSS satellite info, which is streaming every second.
My Primary Key is
Hi Ryan,
Thanks for the advice.
I cant share the exact Schema, however i can give an idea.
I am trying to store GNSS satellite info, which is streaming every second.
My Primary Key is the Timestamp at which i have got the information.. And
other columns in the table are the satellite information
On 2018/06/07 6:11 PM, mukeshkb4u wrote:
Hi All,
I have a table with multiple similar column names, like
abc_1,abc_2,abc_3...
Is there a way i can do a select on only these columns in a table, without
specifiying the full column list?
Can i use a regular expression in selecting column name
On 7 Jun 2018, at 5:11pm, mukeshkb4u wrote:
> I have a table with multiple similar column names, like
> abc_1,abc_2,abc_3...
>
> Is there a way i can do a select on only these columns in a table, without
> specifiying the full column list?
> Can i use a regular expression in selecting colum
Hi All,
I have a table with multiple similar column names, like
abc_1,abc_2,abc_3...
Is there a way i can do a select on only these columns in a table, without
specifiying the full column list?
Can i use a regular expression in selecting column names ?
Regards
Mukesh
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