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The SQL UPDATE statement is used to change data within columns of a SQL Server data table.

The reason we’re using a table variable is temporary and will be removed once query session is closed.

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.Category Number = '05' where = 'michael'; Update mytable SET mytable.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. 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.

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