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Useful Functions SQL has many built-in functions for performing processing on string or numeric data. Following is the list of all useful SQL built-in functions:
- SQL COUNT Function – The SQL COUNT aggregate function is used to count the number of rows in a database table.
- SQL MAX Function – The SQL MAX aggregate function allows us to select the highest (maximum) value for a certain column.
- SQL MIN Function – The SQL MIN aggregate function allows us to select the lowest (minimum) value for a certain column.
- SQL AVG Function – The SQL AVG aggregate function selects the average value for certain table column.
- SQL SUM Function – The SQL SUM aggregate function allows selecting the total for a numeric column.
- SQL SQRT Functions – This is used to generate a square root of a given number.
- SQL RAND Function – This is used to generate a random number using SQL command.
- SQL CONCAT Function – This is used to concatenate any string inside any SQL command.
- SQL Numeric Functions – Complete list of SQL functions required to manipulate numbers in SQL.
- SQL String Functions – Complete list of SQL functions required to manipulate strings in SQL.
