Source
SnowConvert AI - Redshift - Conditions
A BETWEEN condition tests expressions for inclusion in a range of values, using the keywords BETWEEN and AND.
SnowConvert AI - General Functional Differences
This message is reported when a Correlated Subquery (subquery that refers to a column from the outer query) is located. This type of subqueries can, in some cases, present some functional differences in Snowflake (Working with Subqueries).