BETWEEN predicate

Syntax

BETWEEN::=
< expression to test > [NOT] BETWEEN
< begin_expression > AND < end_expression >

BETWEEN predicate specifies the inclusive range to test the expression values. The range is defined by boundary expressions with AND keyword between them. Naturally, all the expressions in BETWEEN predicate must be the same data type, as in the case of comparison predicate.

The predicate

exp1 BETWEEN exp2 AND exp3

is equal to the predicate

exp1 >= exp2 AND exp1 <= exp3

And the predicate

exp1 NOT BETWEEN exp2 AND exp3

is equal to the predicate

NOT (exp1 BETWEEN exp2 AND exp3)

If the value of the predicate exp1 BETWEEN exp2 AND exp3 is TRUE, it does not generally mean that the value of predicate exp1 BETWEEN exp3 AND exp2 is TRUE also, because the first one may be interpreted as the predicate

exp1 >= exp2 AND exp1 <= exp3

while the second one may be considered as

exp1 >= exp3 AND exp1 <= exp2

Example 5.2.3

SELECT model, speed
FROM PC
WHERE price BETWEEN 400 AND 600;