T-SQL - Functions

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MS SQL Server has many built-in functions to perform processing on string or numeric data. Following is the list of all useful SQL built-in functions −

SQL Server COUNT Function − The SQL Server COUNT aggregate function is used to count the number of rows in a database table.
SQL Server MAX Function − The SQL Server MAX aggregate function allows to select the highest (maximum) value for a certain column.
SQL Server MIN Function − The SQL Server MIN aggregate function allows to select the lowest (minimum) value for a certain column.
SQL Server AVG Function − The SQL Server AVG aggregate function selects the average value for certain table column.
SQL Server SUM Function − The SQL Server SUM aggregate function allows selecting the total for a numeric column.
SQL Server SQRT Function − This is used to generate a square root of a given number.
SQL Server RAND Function − This is used to generate a random number using SQL command.
SQL Server CONCAT Function − This is used to concatenate multiple parameters to a single parameter.
SQL Server Numeric Functions − Complete list of SQL functions required to manipulate numbers in SQL.
SQL Server String Functions − Complete list of SQL functions required to manipulate strings in SQL.

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