Update multiple columns in SQL
Try this:
UPDATE table1 SET a = t2.a, b = t2.b, .......FROM table2 t2WHERE table1.id = t2.id
That should work in most SQL dialects, excluding Oracle.
And yes - it's a lot of typing - it's the way SQL does this.
The "tiresome way" is standard SQL and how mainstream RDBMS do it.
With a 100+ columns, you mostly likely have a design problem... also, there are mitigating methods in client tools (eg generation UPDATE statements) or by using ORMs
Syntax
UPDATE table-name SET column-name = value, column-name = value, ...WHERE condition
Example
UPDATE schoolSET course = 'mysqli', teacher = 'Tanzania', student = 'you'WHERE id = 6