Therefore, our join condition is considered a non-equi join. Non-Equi Join’s Secret SauceĮven though in this join condition, we are matching column for column, first name in one table to first name in another, last name in one table to last name in another, we are making sure that the business entity ID in one table does not equal the business entity ID in another table. Non-equi joins are joins whose join conditions use conditional operators other than equals.Īn example would be where we are matching first name and then last name, but we are checking where one field from a table does not equal field from another table. I think it follows with a non-equi join that we’re not using the equal sign. We’re using the equal sign in our join condition. Some examples of equi joins are join conditions where we’re matching first name from one table to first name from another table, or, for example, where we’re matching the customer ID from the customer table with the customer ID from the order table.Įqui join is just a fancy way of saying that we’re matching values equally. In this lesson, we’re going to learn about non-equi joins.īefore we learn about non-equi joins, let’s do a quick on equi joins.Īn equi join is a join that uses equality operators, so recall that a equality is just a join that uses the equal sign.Ĭheck out more Join Type in my Ultimate Guide to SQL Joins. What is a Non-Equi Join in SQL Transcript Compare A Range of Values using a non-Equi Join.Use Non-Equi Join to Check From Duplicate Values.What is a Non-Equi Join in SQL Transcript.
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