Updating sql database throwing a speed dating party
The general form to use is: contains the update values; we use joins to do the matching.
Let suppose that someone has accidentally updated all esql Sales Person. How can we easily repopulate this data without having to retype it in?
To update the rows to reflect this we could use this UPDATE statement: Which results in the following row modifications: The UPDATE statement is complex and there are many elements to consider. For a full list check out the UPDATE (Transact-SQL) article.
Keep in mind that when updating data in columns whose data type is CHAR, VARCHAR, or VARBINARY, the padding or truncation of data depends upon the SET ANSI_PADDING setting.
Though an update statement can modify columns data from many sources, such as literal values or other query results, the basic format is the same.