I'm using node-postgres module and node 13.5. I'm trying to insert a unix timestamp to postgres timestmap column and it seems to work in dbeaver but when I run the code it doesn't work.
CREATE TABLE public.test (
column1 timestamp NULL
);
In dbeaver when I run my insert:
insert into test (column1 ) values ( $1 )
It opens up a dialog I type in my param as: to_timestamp(1) I hit ok and it inserts to my table without problem.
But when I use this code:
pool.query("INSERT INTO test (column1) VALUES ($1)", ["to_timestamp(1)"]);
I get an error:
error: invalid input syntax for type timestamp: "to_timestamp(1)"
the query method is the one from the module.
Also if I run like this:
pool.query("INSERT INTO test (column1) VALUES (to_timestamp(1))", []);
It works.
It seems like the nodejs driver doing something different from the dbeaver driver. Am I doing this wrong? Is there a way to to approach this problem? I'd like to use prepared statement if possible.
The things I can't change:
my data is in unix timestamp
the column must have timestamp type
Any help appreciated.
My college helped me:
pool.query("INSERT INTO test (column1) VALUES to_timestamp($1)", ["1"]);
This is the working solution!
Related
I am trying to select data from cassandra db using below query but it is failing-
SELECT id from keyspace.table where code=123 and toTimestamp(now()) >= some_date;
Error- SyntaxException: line 1:103 no viable alternative at input '(' (...table where code=123 and [toTimestamp](...)
Looks like toTimestamp(now()) is causing the issue.
Can someone plz suggest what is the issue and solution to this?
Thanks.
You can't use functions in the WHERE statement. So the only workaround is to get current time inside your application, and pass it to the query. This request is tracked as CASSANDRA-8488.
But in reality, your query should have condition on some column, not on the calculated value.
My table is sqlite3 is created with the following:-
'CREATE TABLE IF NOT EXISTS gig_program ( gig_program_id VARCHAR(20) PRIMARY KEY );'
When I try to insert data into the table using python 3.8 with the following:-
sql = 'INSERT INTO gig_program ( gig_program_id ) VALUES ( "20200524120727" );'
cur.execute(sql)
the following exception was thrown:-
near "gig_program": syntax error
When I cut and past the insert command to the sqlite3 console, it works.
I have also tried using another editor for the program (thinking that there may be hidden characters) but the result is the same.
I would appreciate help. I have used similar methods in other parts of the program to insert data and they work without issue.
Thank you for looking into my questions.
I found that it was actually my mistake. The exception was actually for a second sql statement which I missed out the "FROM" word.
Thank you everyone for your time.
Hope everyone is doing well.
I'm using psycopg2, and the query is a simple string.
Q= "SELECT * FROM POST WHERE PUBLISH_TIME IS NULL"
When I execute it in pgAdmin, it gives me the correct results, but throws
psycopg2.ProgrammingError: column "publish_time" does not exist
I tried this solution
but it's still the same error output.
Leaving this answer here in case anyone has the same problem. This cannot be done via psycopg2 due to a design feature. I added a flag to my model which depended on publish_date column, created a db script that wrote this flag and went ahead with
Q= "SELECT * FROM POST WHERE PUBLISH_FLAG = False;"
I am stuck on a problem and I am not sure what is the best way to solve it. I have a date column that I want to select and I want to fetch it as a string. Which is great, node-oracledb module has this option with fetchAsString mehotd. But it fetches the date like this for example 10-JAN-16 and I want to fetch it like this 10-01-2016. Is there a way to do that from the node-oracledb module, or I should modify the date after I get the result from the query?
UPDATE: I mean solution without to_char in the query and without query modifications
Check out this section of my series on Working with Dates in JavaScript, JSON, and Oracle Database:
https://dzone.com/articles/working-with-dates-using-the-nodejs-driver
The logon trigger shows an example of using alter session to set the default date format. Keep in mind that there is NLS_DATE_FORMAT, NLS_TIMESTAMP_FORMAT, NLS_TIMESTAMP_TZ_FORMAT.
I only show NLS_TIMESTAMP_TZ_FORMAT because I convert to that type in the examples that follow as I need to do some time zone conversion for the date format I'm using.
Another way to set the NLS parameters is to use environment variables of the same name. Note that this method will not work unless you set the NLS_LANG environment variable as well.
I have declared a date column in Postgres as date.
When I write the value with node's pg module, the Postgres Tool pgAdmin displays it correctly.
When I read the value back using pg, Instead of plain date, a date-time string comes with wrong day.
e.g.:
Date inserted: 1975-05-11
Date displayed by pgAdmin: 1975-05-11
Date returned by node's pg: 1975-05-10T23:00:00.000Z
Can I prevent node's pg to appy time-zone to date-only data? It is intended for day of birth and ihmo time-zone has no relevance here.
EDIT Issue response from Developer on github
The node-postgres team decided long ago to convert dates and datetimes
without timezones to local time when pulling them out. This is consistent
with some documentation we've dug up in the past. If you root around
through old issues here you'll find the discussions.
The good news is its trivially easy to over-ride this behavior and return
dates however you see fit.
There's documentation on how to do this here:
https://github.com/brianc/node-pg-types
There's probably even a module somewhere that will convert dates from
postgres into whatever timezone you want (utc I'm guessing). And if
there's not...that's a good opportunity to write one & share with everyone!
Original message
Looks like this is an issue in pg-module.
I'm a beginner in JS and node, so this is only my interpretation.
When dates (without time-part) are parsed, local time is assumed.
pg\node_modules\pg-types\lib\textParsers.js
if(!match) {
dateMatcher = /^(\d{1,})-(\d{2})-(\d{2})$/;
match = dateMatcher.test(isoDate);
if(!match) {
return null;
} else {
//it is a date in YYYY-MM-DD format
//add time portion to force js to parse as local time
return new Date(isoDate + ' 00:00:00');
But when the JS date object is converted back to a string getTimezoneOffset is applied.
pg\lib\utils.js s. function dateToString(date)
Another option is change the data type of the column:
You can do this by running the command:
ALTER TABLE table_name
ALTER COLUMN column_name_1 [SET DATA] TYPE new_data_type,
ALTER COLUMN column_name_2 [SET DATA] TYPE new_data_type,
...;
as descripted here.
I'd the same issue, I changed to text.
Just override node-postgres parser for the type date (1082) and return the value without parsing it:
import pg from pg
pg.types.setTypeParser(1082, value => value)