Avoid Mixing INNER and OUTER Joins in SQL(weblogs.sqlteam.com)
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jimrice14(880) 4 years, 7 months ago
I had previously written about the danger of Criteria on Outer Joins, but recently another situation popped up that occasionally causes issues with OUTER JOINS that I thought I might address. The issue is when you have multiple tables joined in a single SELECT, and you mix OUTER and INNER JOINS together. The end result doesn't always seem to "work", and it can be tricky to understand exactly why and how to fix it without incurring additional unintended side effects.
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