Postgres and Open Source Experts

The array_fill() is a function that fills an array with a specified argument. The dimensions of that array are also specified in that function as an argument.

The make_interval() method generates an interval based on the arguments passed into it. All the arguments are of INT data type except the last one i.e. seconds, which is of DOUBLE PRECISION.

The PostgreSQL translate() function returns a string after replacing a set of strings from one main string with some set of characters specified.

In PostgreSQL, there are two ways to calculate/get the square of a number: the POWER() function and a user-customized logic, i.e., multiplying the number by itself.

The CITEXT data type in PostgreSQL is case-insensitive that allows us to do text comparisons without worrying about the case.

DOUBLE PRECISION data type is a floating-point data type. It offers high precision and wide storage space of 8 bytes.

The OVERLAY() function in Postgres replaces some specified characters in the given main string with another specified string.

In Postgresql, the regexp_split_to_array() function is used to split the specified string into an array using the specified POSIX regular expressions

The make_date () function takes arguments, then creates and returns a date with them. The make_time() function takes arguments, then creates and returns a time without a time zone.

Array_position() function gives the first occurrence of an element while the Array_positions() function gives all the occurrences of an element in an array.