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SQL Fetch duplicate record field value one record

Source: Internet
Author: User
Keywords Network programming Database synthesis
Tags file function get group name network network programming not included
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SQL takes ABC field a record with the largest field value of a

Select Max (a), b,c from table name GROUP by b,c

The file is simple.

About Max

Max () function
The Max function returns the maximum value in a column. Null values are not included in the calculation.

SQL Max () syntax
Select Max (column_name) from table_name Note: Min and Max can also be used in text columns to get the highest or lowest value in alphabetical order.

Aggregate functions, such as sum, often need to add a group by statement.
GROUP BY statement
The GROUP BY statement is used to combine aggregate functions to group result sets based on one or more columns.

SQL GROUP BY syntax
Select column_name, aggregate_function (column_name)
From table_name
WHERE column_name operator value
GROUP BY column_name

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