Thing's I have tried
I used to_char to get the date from timestamp but I am getting wrong date for this, When I use the date function I just get the timestamp as the result again. In normal postgresql this is working fine but when I use Aurora postgresql I am getting the below Result.
1."SELECT to_char(datetime, 'YYYY-MM-DD') as date,datetime from call_schedule"
result:
"date": "2022-10-07",
"datetime": "2022-10-06T20:00:00.000Z"
2. "SELECT date(datetime) as date, datetime from call_schedule"
result:
"date": "2022-10-03T18:30:00.000Z",
"datetime": "2022-10-04T07:35:00.000Z"
Related
I want to transfer the query to TypeORM.
It looks like this in Postgres
SELECT *
from equipment_charging
where (equipment_charging."start_date"::date, equipment_charging."end_date"::date) OVERLAPS (DATE '2020-09-10', DATE '2020-09-14')
I'm writing this query in TypeORM like this:
.where(
'(equipment_charging.startDate::date, equipment_charging.endDate::date) OVERLAPS (DATE :startDate, DATE :endDate)',
{ startDate, endDate },
)
it gives me error like this:
{"context":"ExceptionsHandler","stack":["QueryFailedError: syntax error at or near \"$1\"\n at new QueryFailedError
What am I doing wrong?
If equipment_charging.startDate and equipment_charging.endDate are already date type in database I think that you could remove ::date
In same idea try to give directly date type for the input.
I also use lot of double quote for query builder in typeorm
try this:
.where(
'("equipment_charging"."startDate", "equipment_charging"."endDate") OVERLAPS (:startDate, :endDate)',
{ startDate, endDate },
)
And convert startDate and endDate to date if needed (with parseIso of date fns for example)
In the view I have a text column which contains a timestamp in this format '20/03/2018 00:00' and I'm trying to make a selection with a between clause but it's not working
SELECT id,entry_date
FROM v_view
WHERE entrada BETWEEN to_timestamp('20/03/2018 00:00','DD/MM/YYYY')::timestamp and to_timestamp('22/03/2018 00:00')::timestamp
order entry_date
with this error message
ERROR: el operador no existe: text >= timestamp without time zone
LINE 3: WHERE entry_date BETWEEN to_timestamp('20/03/2018 00:00','DD/MM.
you need to convert the entrada column value to a timestamp.
Also: casting the result of to_timestamp() to a timestamp is useless because to_timestamp() already returns a timestamp
SELECT id,entry_date
FROM v_view
WHERE to_timestamp(entrada, 'dd/mm/yyyy hh24:mi')
BETWEEN to_timestamp('20/03/2018', 'DD/MM/YYYY')
and to_timestamp('22/03/2018', 'dd/mm/yyyy')
order entry_date;
I prefer to use ANSI SQL timestamp literals over the to_timestamp function:
SELECT id,entry_date
FROM v_view
WHERE to_timestamp(entrada, 'dd/mm/yyyy hh24:mi')
BETWEEN timestamp '2018-03-20 00:00:00'
and timestamp '2018-03-22 00:00:00'
order entry_date
Do not store date, time or timestamp values in a text or varchar column. You should define that column as timestamp then you don't need to convert anything and you don't need to deal with invalid timestamp values in that column.
How can i filter database entries that have a datetime less than 60min in the past?
I tried some date operations as follows in mongodb with two fields timestamp and marketstartime that are of type date in all my documents:
{"$subtract": ["$timestamp", "$marketstartime"]}
but it returns always null for that operation. Why?
My timestamp and marketstartime entries in the db are in date type and look as follows, this should be correct:
2017-12-23 12:00:00.000Z
The actual question I’m trying to solve: How can I get all entries that have a timestamp less than 60 min in the past from now?
A query can composed for documents with timestamp value set less than 60 minutes ago.
from datetime import datetime, timedelta
query = {
'$timestamp': {
'$lt': datetime.now() + timedelta(minutes=-60)
}
}
cursor = db.collection.find(query)
I'm currently parsing a time string and saving it to the db (Postgresql):
event.Time, _ := time.Parse("3:04 PM", "9:00 PM")
// value of event.Time now is: 0000-01-01 21:00:00 +0000 UTC
db.Create(&event)
It's giving me this error: pq: R:"DateTimeParseError" S:"ERROR" C:"22008" M:"date/time field value out of range: \"0000-01-01T21:00:00Z\"" F:"datetime.c" L:"3540"
event.Time's type is time.Time.
I also tried setting event.Time's type to string and using time data type in postgresql:
type Event struct {
Time string `gorm:"type:time
}
But now I'm getting an error when fetching records in the db:
sql: Scan error on column index 4: unsupported driver -> Scan pair: time.Time -> *string
Investigated this issue further. Currently, there's no support in GORM for any Date/Time types except timestamp with time zone
See this part of code from dialect_postgres.go:
case reflect.Struct:
if _, ok := dataValue.Interface().(time.Time); ok {
sqlType = "timestamp with time zone"
}
So basically I see two options for you:
Either use varchar(10) in DB, and string in Go, an simply save it as "9:00 PM" (where 10 is some number that suits you)
Or use timestamp with time zone in DB, time.Time in Go, and format your date part as a constant date, 01/01/1970, for example:
time.Parse("2006-01-02 3:04PM", "1970-01-01 9:00PM")
In that case you'll have to omit the date part in your presentation, but if you plan to select by date range, that could work better for you.
You can set an arbitrary database-specific type with Gorm using sql tag
type Event struct {
Time time.Time `sql:"type:timestamp without time zone"`
}
When updating the DATETIME field in SQL, the Go string must be in this format: time.Now().Format(time.RFC3339).
From Postgres perspective the error stems from there being no year 0000. If you don't the date you may just be able to add 1 year to the converted timestamp giving '0001-01-01T21:00:00+00' which is a valid Postgres timestamp.
select '0000-01-01T21:00:00+00'::timestamptz at time zone 'UTC'
ERROR: date/time field value out of range: "0000-01-01T21:00:00+00"
Gives he same error. And just as a demonstration 1 day before 0001-01-01 gives:
select '0001-01-01T21:00:00+00'::timestamptz at time zone 'UTC' - interval '1 day' "day_before_1/1/1";
--day_before_1/1/1
--0001-12-31 21:00:00 BC
So in my database i have a table with startimestamp that is "Timestamp with time zone" type
but what i want to display the timestamp without the time zone so i thought this would work
Select to_char("StartTimestamp",'YYYY/MM/DD HH24:MM:SS')from "Samples" where "ID" = 20
and a i get
"2013/08/02 14:08:04"
but the when i do it without the to_char and just call the timestamp for the same id like this
select "StartTimestamp" from "Samples" where "ID"=20
i get this which is the correct one
"2013-08-02 14:31:04-07"
I'm i missing something the to_char statement? Thanks
Change MM to MI in the minutes place
select
to_char(now(),'YYYY/MM/DD HH24:MM:SS'),
to_char(now(),'YYYY/MM/DD HH24:MI:SS');
to_char | to_char
---------------------+---------------------
2013/08/21 15:08:00 | 2013/08/21 15:51:00