BITAND

Syntax

bitand::=
Description of bitand.gif follows

Description of the illustration bitand.gif

Purpose

BITAND computes an AND operation on the bits of expr1 and expr2, both of which must resolve to nonnegative integers, and returns an integer. This function is commonly used with the DECODE function, as illustrated in the example that follows.

Both arguments can be any numeric datatype, or any nonnumeric datatype that can be implicitly converted to NUMBER. The function returns NUMBER.

Note:

This function does not determine the datatype of the value returned. Therefore, in SQL*Plus, you must specify BITAND in a wrapper, such as TO_NUMBER, which returns a datatype.

See Also:

Table 2-11, "Implicit Type Conversion Matrix" for more information on implicit conversion

Examples

The following represents each order_status in the sample table oe.orders by individual bits. (The example specifies options that can total only 7, so rows with order_status greater than 7 are eliminated.)

SELECT order_id, customer_id,
  DECODE(BITAND(order_status, 1), 1, 'Warehouse', 'PostOffice')
      Location,
  DECODE(BITAND(order_status, 2), 2, 'Ground', 'Air') Method,
  DECODE(BITAND(order_status, 4), 4, 'Insured', 'Certified') Receipt
  FROM orders
  WHERE order_status < 8;

  ORDER_ID CUSTOMER_ID LOCATION   MET RECEIPT
---------- ----------- ---------- --- ---------
      2458         101 Postoffice Air Certified
      2397         102 Warehouse  Air Certified
      2454         103 Warehouse  Air Certified
      2354         104 Postoffice Air Certified
      2358         105 Postoffice G   Certified
      2381         106 Warehouse  G   Certified
      2440         107 Warehouse  G   Certified
      2357         108 Warehouse  Air Insured
      2394         109 Warehouse  Air Insured
      2435         144 Postoffice G   Insured
      2455         145 Warehouse  G   Insured
. . .