error-trap | basic logging and handling of uncaughtException
kandi X-RAY | error-trap Summary
kandi X-RAY | error-trap Summary
basic logging and handling of uncaughtException, unhandledRejection, signals, etc.
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QUESTION
I have a custom function, and I am trying to do some error-trapping within a custom function with the idea of printing more user-friendly error messages as opposed to the bulky, somewhat intimidating-looking error blocks.
Here is my data and custom function:
...ANSWER
Answered 2022-Mar-11 at 19:00The TypeError
is thrown before func
is actually called. A solution would be to wrap func
in a second function and inside it call func
:
QUESTION
In a PL/pgSQL function, I want to trap an error. For example, when I convert text to a number, I get an error (I run it in psql
, but get the same error in the Postico GUI client):
ANSWER
Answered 2021-Nov-23 at 09:54When you get the error in psql
, run
QUESTION
I am initializing functions as part of an ETL pipeline; however, one of the functions is dependant to operate on a certain table, which has not yet been created by the time this function has been initialized.
Illustration:
...ANSWER
Answered 2020-Apr-07 at 12:16You cannot do that in an SQL function, because SQL does not have procedural code. You need to use a different procedural language, for example PL/pgSQL:
QUESTION
For the HelpCovid GPLv3+ web server application (git commit dff3ab1521ed579cbf2
at end of March 2020, probably in function hcv_initialize_database
of our file hcv_database.cc
) in C++ for Linux (work in progress) using libpqxx with PostgreSQL 11 on Debian/Buster, we would like at startup time to issue one single SQL query which adds a message to the PostGreSQL log file (e.g. /var/log/postgresql/postgresql-11-main.log
in our test environment).
The intuition would be that just after creating the tables we would issue some SQL like
--- wrong fictional PostgreSQL query
ADD TO POSTGRESQL LOG FILE ("start of helpcovid pid 1234 commit dff3ab1521ed+ on localhost");
with the hope that something similar to
...ANSWER
Answered 2020-Mar-31 at 15:42Try using a DO
statement:
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