MySQL/MariaDB Configure Warnings to throw Errors - mysql

Question

I need MySQL/MariaDB to throw error messages instead of warning messages.
Reason: In my development environment, warnings are ignored in SQL/PHP (and both SQL and PHP continue processing), therefore I can't detect any issues when testing. In production, however, all warnings crash the query, thus terminating the API, and returning a "failure" message to users.
This is a very bad result and caused many headaches in the past.
Here is a very specific scenario that caused many problems:
I have a table "testtable" with two columns "pk" and "bRequiredBoolean", where pk is the primary key (thus auto increments) and bRequiredBoolean HAS NO DEFAULT VALUE:
CREATE TABLE `test`.`testtable` ( `pk` INT NOT NULL AUTO_INCREMENT , `bRequiredBoolean` BOOLEAN NOT NULL , PRIMARY KEY (`pk`)) ENGINE = InnoDB;
In my development server, I can run the following query:
INSERT INTO `testtable`() VALUES ()
and receive the following warning:
Warning: #1364 Field 'bRequiredBoolean' doesn't have a default value
In my development server, the entry IS INSERTED and the API continues executing.
In my production server, the entry ISN'T INSERTED and the API crashes.
I know that the development/testing servers should be identical to prevent issues like this, but I currently don't have the funds for extra licenses, so I would like an alternative solution to throw error messages instead of warnings to catch scenarios like the one mentioned above.
Important note: I don't want to insert any extra code within each query, I'd prefer to edit some configuration file. For instance, I don't want to add the following code TO EVERY SINGLE QUERY:
SHOW COUNT(*) WARNINGS
I'd rather edit some configuration file so it will always throw an error, even if I do ad-hoc queries directly through the GUI.
I found other similar questions, but nobody has responded to those threads:
MariaDB shows warnings instead of errors
Throw error on mysql warning pdo
Any help is much appreciated.

Answer 1

Thanks to Barmar's comment, I found the solution to my problem.
You can check your SQL_Mode via:
SELECT ##SQL_MODE;
Apparently, there is a SQL_Mode setting that specifically throws errors for all warnings called "Traditional"
You can view the official mySQL website for more info regarding SQL_Mode values: https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sql-mode-full
So I ran the following query:
SET GLOBAL sql_mode = 'TRADITIONAL';
After running the query, I executed the same query as before:
INSERT INTO `testtable`() VALUES ()
and received the following error:
Error
SQL query: Copy
INSERT INTO `testtable`() VALUES ();
MySQL said: Documentation
#1364 - Field 'bRequiredBoolean' doesn't have a default value
This is exactly what I needed. Thank you so much #Barmar!