BIN_TO_NUM

Syntax

Description of the illustration bin_to_num.gif

Purpose

BIN_TO_NUM converts a bit vector to its equivalent number. Each argument to this function represents a bit in the bit vector. This function takes as arguments any numeric datatype, or any nonnumeric datatype that can be implicitly converted to NUMBER. Each expr must evaluate to 0 or 1. This function returns Oracle NUMBER.

BIN_TO_NUM is useful in data warehousing applications for selecting groups of interest from a materialized view using grouping sets.

See Also:

group_by_clause for information on GROUPING SETS syntax
Table 2-10, "Implicit Type Conversion Matrix" for more information on implicit conversion
Oracle Data Warehousing Guide for information on data aggregation in general

Examples

The following example converts a binary value to a number:

SELECT BIN_TO_NUM(1,0,1,0) FROM DUAL; 

BIN_TO_NUM(1,0,1,0)
-------------------
                 10