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gzip_decompress_from_base64_string()

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Decodes the input string from base64 and performs gzip decompression.

Syntax

gzip_decompress_from_base64_string(string)

Learn more about syntax conventions.

Parameters

Name Type Required Description
string string ✔️ The value that was compressed with gzip and then base64-encoded. The function accepts only one argument.

Note

  • This function checks mandatory gzip header fields (ID1, ID2, and CM) and returns an empty output if any of these fields have incorrect values.
  • The FLG byte is expected to be zero.
  • Optional header fields are not supported.

Returns

  • Returns a UTF-8 string that represents the original string.
  • Returns an empty result if decompression or decoding failed.
    • For example, invalid gzip-compressed and base 64-encoded strings will return an empty output.

Examples

Valid input

Run the query

print res=gzip_decompress_from_base64_string("H4sIAAAAAAAA/wEUAOv/MTIzNDU2Nzg5MHF3ZXJ0eXVpb3A6m7f2FAAAAA==")
res
"1234567890qwertyuiop"

Invalid input

Run the query

print res=gzip_decompress_from_base64_string("x0x0x0")
res

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