Any column that is not modified retains its original values, except in certain queries using the CASE expression. See CASE expression for a description of CASE expressions. To add, drop, or modify a ...

FROM statement using source data that's known to have flaws. Back to the OP - either filter out the bad records in the WHERE clause, or put a CASE statement in the UPDATE list. No need for a cursor.

So I am trying to write an update statement that uses two factors to determine the new value of the field, one of the factors is an aggregate function (COUNT).

SQL is the leading language for developing and querying databases, but it has a few quirks. In my last article, I shared 7 SQL mistakes to avoid. Now, let’s take a look at 9 best practices for ...