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1. RAWTOHEX Function​

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1. RAWTOHEX Function​

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The RAWTOHEX function in H2 database is used to convert a binary value to its hexadecimal representation.

2. Syntax​

The syntax for the RAWTOHEX function in H2 database is as follows:

RAWTOHEX(binary)

Arguments​

  • binary: The binary value that needs to be converted to hexadecimal. It should be of type BINARY or VARBINARY.

Return​

  • The RAWTOHEX function returns a string representing the hexadecimal value of the input binary.

3. Notes​

  • The RAWTOHEX function in H2 database is specific to binary values. If you want to convert non-binary values to hexadecimal, you can use other functions like HEX or TO_HEXADECIMAL.
  • If the input binary is NULL, the RAWTOHEX function will return NULL.
  • Ensure that you are passing the correct data type as the argument for the RAWTOHEX function to avoid errors.

4. Examples​

Here are a few examples demonstrating the usage of the RAWTOHEX function in H2 database:

Example 1 - Converting a binary value to hexadecimal:​

SELECT RAWTOHEX(X'48656C6C6F') AS hex_value;

Output:

hex_value
---------
48656C6C6F

Example 2 - Converting binary values stored in a table to hexadecimal:​

CREATE TABLE binary_data (
  id INT PRIMARY KEY,
  data VARBINARY
);

INSERT INTO binary_data VALUES (1, X'FF'), (2, X'C0DE');

SELECT id, data, RAWTOHEX(data) AS hex_value
FROM binary_data;

Output:

id | data   | hex_value
---+--------+----------
1  | FF     | 46
2  | C0DE   | 43D0DE
  • HEX - Convert a numeric value to its hexadecimal representation.
  • TO_HEXADECIMAL - Convert a string value to its hexadecimal representation.