Space required by float

Hi guys,.

Just as char (n) can store maximum n bytes of storage, number (p) can maximum ((p+1) / 2) + 1 bytes of storage, then the amount of maximum storage space taken by float and float (n)...

Please suggest...

Thank you

Hello

The FLOAT data type is a subtype of NUMBER. It can be specified with or without precision, which has the same definition for NUMBER and can vary from 1 to 126. Scale cannot be specified, but it is interpreted from the data. Each FLOAT value requires 1 to 22 bytes.

Oracle database provides two types of digital data only for numbers to floating-point:

BINARY_FLOAT types is a 32-bit, single-precision floating point number data type. Each value of type BINARY_FLOAT requires 4 bytes.

BINARY_DOUBLE is 64-bit double-precision floating-point number data type; Each BINARY_DOUBLE value requires 8 bytes.

Take a look at these urls for more details.

http://download.Oracle.com/docs/CD/E11882_01/server.112/e17118/sql_elements001.htm#SQLRF50981

http://download.Oracle.com/docs/CD/B10501_01/server.920/a96524/c13datyp.htm#16210

Kind regards
Avinash

Tags: Database

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