Need to know in Redshift database if there is a option to capture error code or error message in the exception block similar to error code (SQLCODE) and error description(SQLERRM) in Oracle. Requirement is to capture the error code or error message occuring in procedure and insert it into error logging table. Kindly suggest.
The question is quiet old. I hope you managed to find what you were looking for. Im adding up this answer so this answer can help other people.
In an Amazon Redshift stored procedure, the only supported handler_statement is RAISE. Any error encountered during the execution automatically ends the entire stored procedure call and rolls back the transaction. This occurs because subtransactions are not supported.
SYNTAX :
[ <<label>> ]
[ DECLARE
declarations ]
BEGIN
statements
EXCEPTION
WHEN OTHERS THEN
handler_statements
END;
For detail understanding, visit its Documentation.
Related
I am seeing a weird issue while executing an SQL stored procedure. Below is the format of the stored proc:
CREATE PROC abc
(
#status int=0 output
)
AS
BEGIN TRY
--Does some transactions
END TRY
BEGIN CATCH
SET #status=-1
END CATCH
return #status
I understand I should have added/logged more details like Error Number, Error Message etc in my catch block but I didnt realize such an issue would occur. Currently, the stored procedure in production sometimes returns a -1 status. The strange part is all the transactions in the try block have been successfully committed. I dont understand then why is the procedure getting into the catch block. I tried to manually execute the procedure with same data it completes successfully and returns status=0. I added extra logging in test environment and tested more than 300 times, but was not able to reproduce the issue. In production I am not allowed to make any changes. Hence, I asked our DBA's to enable trace logging, but that didnt help us much in getting any exception details.
I would really appreciate if there is any way I can troubleshoot this issue. Also are there any options for the DBA's to monitor this procedure and capture the exception
I am trying to add a trigger through phpmyadmin 4.4
I get the error:
Why is this happening? How to declare a variable?
Start with BEGIN, end with END. Put the various statements between them.
Notice in the error how it is alread providing FOR EACH ..., but it is depending on you to do the rest. See http://dev.mysql.com/doc/refman/5.7/en/triggers.html (and other pages) for the complete syntax that phpmyadmin is "helping" you generate.
I've declared an handler which will handle SQLEXCEPTION, in the clean up code i had it do SELECT 'My Handle';, i ran a script that fails because of a primary key violation and it worked cause i got my output.
the problem with DECLARE ... HANDLE FOR SQLEXCEPTION is that when there is an error it will run though it's doesn't say what error triggered it, so i want to output the error
How do i output the SQL Error using a MySQL Query, i don't care if i can only output the error code/id i just need something to output giving me an indication on what the error is so i can fix the problem
EDIT: in case if it's not obvious, this code is in an SQL Procedure
There is nothing in the DECLARE HANDLER documentation on this functionality. You could handle the errors MySQL returns to your application and print or log them that way.
I actually haven't used any handles, but i think you can make your code into a stored procedure and then run the stored procedure!! You might find MySQL accepts what you are trying to do then.
java.sql.SQLException offers an int getErrorCode() function so the program can know what in particular has happened to cause the exception. Any chance to get a list of these codes for MySQL?
They're available in the MySQL documentation.
Server error codes
Client error codes
The problem that I am facing is primarily on Exception Handling! When an exception occurs I want to put that data in another log table with the error message. However, in DB2 I am not able to figure out a way to retrieve the corresponding error message for the raised SQLSTATE.
PS: I have a stored procedure for this migration and I am not using any other language to call it.
Though, I have already queried about this and infact I got some valuable pointers.
Refer: DB2 Exception handling
However, if I use the basic SQLERRM function then for a basic 23502 I get the following message:
"SQLSTATE 23502: An insert or update value is null, but the column cannot contain null values."
Whereas what I really want is the Column name that threw this error, appended to this message! Is there any way, the DB2 could give me a complete error, with the column name the error was raised in?
Thanks in advance ;-)...
Harveer
You need to retrieve all of the tokens from the SQLCA when you encounter such an error. The tokens will contain either the table name and column name, or the numeric table id and column position within the table, starting with zero. The SQLERRM function takes in those tokens and uses them to reconstruct an error message that is as detailed as what you see from the command line.