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T-SQL – Functions



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 −

  • − The SQL Server COUNT aggregate function is used to count the number of rows in a database table.

  • − The SQL Server MAX aggregate function allows to select the highest (maximum) value for a certain column.

  • − The SQL Server MIN aggregate function allows to select the lowest (minimum) value for a certain column.

  • − The SQL Server AVG aggregate function selects the average value for certain table column.

  • − The SQL Server SUM aggregate function allows selecting the total for a numeric column.

  • − This is used to generate a square root of a given number.

  • − This is used to generate a random number using SQL command.

  • − This is used to concatenate multiple parameters to a single parameter.

  • − Complete list of SQL functions required to manipulate numbers in SQL.

  • − Complete list of SQL functions required to manipulate strings in SQL.

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