How to update select t-sql

Written by alexander gokhfeld
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How to update select t-sql
T-SQL UPDATE and SELECT statements update data in SQL databases. ( Images)

All user applications request data from the SQL databases by sending Transact-SQL (T-SQL) statements to the SQL server, including SELECT and UPDATE T-SQL statements. The UPDATE statement changes the existing SQL Server data in one or more columns of a database table or a database view. The SELECT statement gives users the ability to limit a set of records used in database operations. By using the T-SQL SELECT statement inside of an UPDATE statement you can fulfil a conditional user query on a SQL database.

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  1. 1

    Click "Start" in Windows and then click "Microsoft SQL Management Console."

  2. 2

    Enter the following T-SQL code in the open window:

    UPDATE titles

    SET ytd_sales =

      (SELECT SUM(qty)
         FROM sales
            WHERE sales.title_id = titles.title_id
            AND sales.ord_date IN (SELECT MAX(ord_date) FROM sales))

    FROM titles, sales

  3. 3

    Click "File' and then click "Save" to update sales data within the selected date range.

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