Updating tables in sql server joe pesci dating

Suppose you want to update a column with the value 0, if it that column contains negative value.Let us also assume that there are over 2 million row in that column that has a negative value.Consider the following code: The above code updates 10000 rows at a time and the loop continues till @@rowcount has a value greater than zero. Best practices while updating large tables in SQL Server1.

But this is not so simple and as you may know, even when statistics are manually updated Natively Compiled Stored Procedures seem to ignore them.

The SQL Server (Transact-SQL) UPDATE statement is used to update existing records in a table in a SQL Server database.

There are 3 syntaxes for the UPDATE statement depending on whether you are performing a traditional update or updating one table with data from another table.

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