Updating multiple rows at a time in sql server
This can also be used to change the column to NULL if the column has no default and is defined to allow null values.Compound assignment operator: = Add and assign -= Subtract and assign *= Multiply and assign /= Divide and assign %= Modulo and assign &= Bitwise AND and assign ^= Bitwise XOR and assign |= Bitwise OR and assign Returns updated data or expressions based on it as part of the UPDATE operation.I would appreciate the code (I'm thinking its an Update with a join or a case statement, I just cant seem to get it right, nor am I finding this anywhere on the web), but if you know of a link elsewhere on these forums that solves this problem, please let me know. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.Specifies the temporary named result set or view, also known as common table expression (CTE), defined within the scope of the UPDATE statement.
DEFAULT Specifies that the default value defined for the column is to replace the existing value in the column.FROM Specifies that a table, view, or derived table source is used to provide the criteria for the update operation. If the object being updated is the same as the object in the FROM clause and there is only one reference to the object in the FROM clause, an object alias may or may not be specified.If the object being updated appears more than one time in the FROM clause, one, and only one, reference to the object must not specify a table alias.I need to copy/place the data from one column into another column for every row in the table, where the data from the first column corresponds to row ID.This way, for evey row in the table, there is corresponding data and no nulls in the second column.