PostgreSQL built-in functions, also called as Aggregate functions, are used for performing processing on string or numeric data.
The following is the list of all general-purpose PostgreSQL built-in functions −
- PostgreSQL COUNT Function − The PostgreSQL COUNT aggregate function is used to count the number of rows in a database table.
- PostgreSQL MAX Function − The PostgreSQL MAX aggregate function allows us to select the highest (maximum) value for a certain column.
- PostgreSQL MIN Function − The PostgreSQL MIN aggregate function allows us to select the lowest (minimum) value for a certain column.
- PostgreSQL AVG Function − The PostgreSQL AVG aggregate function selects the average value for certain table column.
- PostgreSQL SUM Function − The PostgreSQL SUM aggregate function allows selecting the total for a numeric column.
- PostgreSQL ARRAY Functions − The PostgreSQL ARRAY aggregate function puts input values, including nulls, concatenated into an array.
- PostgreSQL Numeric Functions − Complete list of PostgreSQL functions required to manipulate numbers in SQL.
- PostgreSQL String Functions − Complete list of PostgreSQL functions required to manipulate strings in PostgreSQL.