SQL MID() Function

Submitted by admin on

The MID() function is used to extract values from a column. The MID() contain three (3) parameters. The first one is used to select which column to extract, the second one is the starting position, the last one is the number of characters to be extracted.

SQL MID() Syntax

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SQL AVG() Function

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The AVG function calculates the average of a specified column. It works only on a numeric column. It first sums up all data and then divides it by the total number of rows.For example if the sum of 5 items is 10 then average is 10/5 = 2.

SQL AVG() Syntax

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