decode (character set) function

Translates binary expr to a string using the character set encoding charSet.

Syntax 

decode(expr, charSet)

Arguments

  • expr: A BINARY expression encoded in charset.

  • charSet: A STRING expression.

Returns

A STRING.

If charSet does not match the encoding the result is undefined. charSet must be one of (case insensitive):

  • ‘US-ASCII’

  • ‘ISO-8859-1’

  • ‘UTF-8’

  • ‘UTF-16BE’

  • ‘UTF-16LE’

  • ‘UTF-16’

Examples 

> SELECT encode('Spark SQL', 'UTF-16');
[FE FF 00 53 00 70 00 61 00 72 00 6B 00 20 00 53 00 51 00 4C]
> SELECT decode(X'FEFF0053007000610072006B002000530051004C', 'UTF-16')
 Spark SQL