try_sub

Scalar function

Subtract two UINT256 values, returning NULL if underflow occurs. Follows DuckDB's try_* convention for safe arithmetic.

Overloads

try_sub(UINT256, UINT256)

Parameters

Name	Type
a	UINT256
b	UINT256

Returns

Name	Type
difference	UINT256

SELECT try_sub(balance, withdrawal) AS new_balance;

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