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Update data through view in SQL - view data update in SQL - SQL view updates




Updating relational databases through views. Before You Begin.

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Updating relational databases through views


This example changes the value in the StartDate and EndDate columns for a specific employee by referencing columns in the view HumanResources. This statement succeeds because the columns being modified are from only one of the base tables. The example inserts a new row into the base table HumanResouces. Right-click the view and select Edit Top Rows. In the Results pane, locate the row to be changed or deleted. On the Standard bar, click New Query. Copy and paste the following example into the query window and click Execute. A sample SQL script to create a view is given below: If the query is saved as a view, then these overhead activities will only be performed once at the time the view is created. Although the definition of a view is permanent, the data contained therein is dynamic depending on the point in time at which the view is accessed. They can join and simplify multiple tables into one virtual table.

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Video about updating relational databases through views:




Updating relational databases through views


This example changes the value in the StartDate and EndDate columns for a specific employee by referencing columns in the view HumanResources. This statement succeeds because the columns being modified are from only one of the base tables. The example inserts a new row into the base table HumanResouces. Right-click the view and select Edit Top Rows. In the Results pane, locate the row to be changed or deleted. On the Standard bar, click New Query. Copy and paste the following example into the query window and click Execute. A sample SQL script to create a view is given below: If the query is saved as a view, then these overhead activities will only be performed once at the time the view is created. Although the definition of a view is permanent, the data contained therein is dynamic depending on the point in time at which the view is accessed. They can join and simplify multiple tables into one virtual table.

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1 thoughts on “Updating relational databases through views

  1. The statement succeeds because only columns from a single base table are specified and the other columns in the base table have default values. Furthermore, they can provide results for different calculations like sum and average along with the stored data, and can limit the degree to which tables are exposed to the outer world.

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