Converting Binary To Hex With T-SQL

Kevin Feasel

2018-11-15

T-SQL

Dave Mason uses STRING_SPLIT to convert binary values to their hex equivalents:

I started pondering it for a bit and began to wonder if I could use the new for SQL Server 2016 STRING_SPLIT function to convert a binary string to decimal. The thought process was to split the string into rows of CHAR(1) values, along with an in-string character position. Then I could take the “1” values, calculate the 2ᵡ value, and sum them up for a decimal value.

I quickly realized I’d need to reverse the binary string. I also discovered the STRING_SPLIT function eliminated 0’s adjacent to 1’s. I don’t have much use for this code at the moment, but maybe there’s something here that you can take away.

Given some of the issues Dave ran into, it seems that a tally table-based solution might be a better choice.

Related Posts

Enabling Database-Level Change Tracking

Tim Weigel continues a series on change tracking: If you don’t provide a retention period, SQL Server’s default is 2 days. Auto-cleanup defaults to ON unless you tell it otherwise. Easy! The table level commands aren’t any more complicated. Before we get started, please note that change tracking requires a primary key on the table […]

Read More

Isolation Levels and Dynamic SQL

Max Vernon points out how transaction isolation levels work when combined with sp_executesql: Imagine you have a piece of code where you don’t care about the downsides to the “read uncommitted” isolation level, and do your due diligence by adding SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; at the start of your code. The code following that statement […]

Read More

Categories

November 2018
MTWTFSS
« Oct Dec »
 1234
567891011
12131415161718
19202122232425
2627282930