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johnnwicky

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About johnnwicky

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  1. 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
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