Friday, January 14, 2022

Between...And Operator [MS]

Determines whether the value of an expression falls within a specified range of values. You can use this operator within SQL statements.


expr [Not] Betweenvalue1Andvalue2

The Between...And operator syntax has these parts:




Expression identifying the field that contains the data you want to evaluate.

value1, value2

Expressions against which you want to evaluate expr.


If the value of expr is between value1 and value2 (inclusive), the Between...And operator returns True; otherwise, it returns False. You can include the Not logical operator to evaluate the opposite condition (that is, whether expr lies outside the range defined by value1 and value2).

You might use Between...And to determine whether the value of a field falls within a specified numeric range. The following example determines whether an order was shipped to a location within a range of postal codes. If the postal code is between 98101 and 98199, the IIf function returns "Local". Otherwise, it returns "Nonlocal".

SELECT IIf(PostalCode Between 98101 And 98199, "Local", "Nonlocal") FROM Publishers

If expr, value1, or value2 is Null, Between...And returns a Null value.

Because wildcard characters , such as *, are treated as literals, you cannot use them with the Between...And operator. For example, you cannot use 980* and 989* to find all postal codes that start with 980 to 989. Instead, you have two alternatives for accomplishing this. You can add an expression to the query that takes the left three characters of the text field and use Between...And on those characters. Or you can pad the high and low values with extra characters — in this case, 98000 to 98999, or 98000 to 98999 – 9999 if using extended postal codes. (You must omit the – 0000 from the low values because otherwise 98000 is dropped if some postal codes have extended sections and others do not.)

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