HEX (SSIS Expression)
Applies to: 
SQL Server
SSIS Integration Runtime in Azure Data Factory
Returns a string representing the hexadecimal value of an integer.
Syntax
HEX(integer_expression)
Arguments
integer_expression
Is a signed or unsigned integer.
Result Types
DT_WSTR
Remarks
HEX returns null if integer_expression is null.
The integer_expression argument must evaluate to an integer. For more information, see Integration Services Data Types.
The return result does not include qualifiers such as the 0x prefix. To include a prefix, use the + (Concatenate) operator. For more information, see + (Concatenate) (SSIS Expression).
The letters A - F, used in HEX notations, appear as uppercase characters.
The length of the resulting string for integer data types is as follows:
DT_I1 and DT_UI1 return a string with a maximum length of 2.
DT_I2 and DT_UI2 return a string with a maximum length of 4.
DT_I4 and DT_UI4 return a string with a maximum length of 8.
DT_I8 and DT_UI8 return a string with a maximum length of 16.
Expression Examples
This example uses a numeric literal. The function returns the value 190.
HEX(400)
This example uses the ReorderPoint column. The column data type is smallint. If ReorderPoint is 750, the function returns 2EE.
HEX(ReorderPoint)
This example uses LocaleID, a system variable. If LocaleID is 1033, the function returns 409.
HEX(@LocaleID)