DEFAULT Specifies that the default value defined for the column is to replace the existing value in the column.This can also be used to change the column to NULL if the column has no default and is defined to allow null values.For more information, see WITH common_table_expression (Transact-SQL). For information about table hints, see Table Hints (Transact-SQL).
Because transaction logs are not recorded for table-valued parameters, performance improves.
Previously, when multiple values were involved, the insert statement was executed multiple times; now, I use a table-valued parameter—with numerous values—that’s treated as one value and requires only one insert statement.
If you omit the WHERE clause, all records in the table will be updated!
The WHERE clause specifies which record(s) that should be updated.
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.
SQL Server FAQ SQL Server FAQ - Updating Multiple Rows with One UPDATE Statement By: (Continued from previous topic...) How To Update Multiple Rows with One UPDATE Statement?Data after insert as /* Some code */ declare @ID int set @ID = (select ID from inserted) /* Some code */ And there is another consequence of statement-level nature of triggers.They fire even if DML statement did not modify any rows.triggers introduce fragmentation and increase tempdb load due to version store usage.Triggers are running in context of transaction, increase the time in which locks are held and contribute to locking and blocking in the system.Or what if the updating became a regular request and the company needed to have the functionality available in the application?