Expressions and Predicates
In algebra, an expression such as a + b = c can be resolved as “true” or “false” by substituting constant values into a, b, and c. Alternatively, given values for any two of a, b, or c, we can calculate the missing value. So it is with SQL expressions because, simply, they are substitution formulae.
KeywordsSearch Condition Collation Sequence External Function String Function Function Declaration
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