Im Learning SQL Certification training , I would like to ask an Access SQL question.
There is a code like the following, but I would like to add a comparison with a fixed value as an or condition.
I'm new to SQL and it doesn't work.
I would appreciate it if you could teach me.
SELECT A FROM TableA LEFT OUTER JOIN TableB
ON Table A. Column A = Table B. Column B
WHERE Column B IS NULL
↓
SELECT A FROM TableA LEFT OUTER JOIN TableB
ON Table A. Column A = Table B. Column B
OR Table A. Column A = Fixed value
WHERE Column B IS NULL