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What is aggregate and Scalar Functions

What are Aggregate and Scalar capacities? A total capacity performs activities on an accumulation of qualities to restore a solitary scalar worth. Total capacities are regularly utilized with the GROUP BY and HAVING provisions of the SELECT articulation. Following are the broadly utilized SQL total capacities: AVG() – Calculates the mean of an accumulation of…

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What is Sql – Constraints

What is Sql – Constraints Constraints are utilized to indicate the principles concerning information in the table. It tends to be connected for single or different fields in a SQL table during the formation of a table or in the wake of making utilizing the ALTER TABLE direction. The imperatives are: NOT NULL – Not…

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