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PostgreSQL ROUND() Function With Examples

PostgreSQL provides a built-in function named the ROUND() function that accepts either one or two arguments/values. It rounds a number to the nearest integer.

How to Convert a String to a Number in PostgreSQL

Specify a string followed by “::” and then write the data type to convert the given string into the targeted type like integer, decimal, or double precision.

How to Use TO_NUMBER() Function in PostgreSQL

TO_NUMBER() is used to convert a character string to a number. The TO_NUMBER() function accepts two parameters, a “string” and a “format”.

PostgreSQL BOOLEAN Data Type With Examples

In PostgreSQL, the BOOLEAN or BOOL data type takes only 1 byte to store a value in a database, and it returns one of two probable values: True or False.

PostgreSQL BIGINT Data Type With Examples

BIGINT is a numeric data type in PostgreSQL that stores the integer values. It stores a value between -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807.

What Does DROP TABLE CASCADE do in PostgreSQL

In PostgreSQL, the CASCADE option is used with the DROP TABLE command to drop/delete a table along with its dependent objects.

How to Alter Column Type in PostgreSQL

To alter column’s type in PostgreSQL, use the “SET DATA TYPE” or “TYPE” keyword with the ALTER TABLE and ALTER COLUMN commands.

How to Use DATE_PART() Function in PostgreSQL

DATE_PART() function in PostgreSQL is used to extract/retrieve a specific part(like a month, year, hour, minutes, etc.) from a TIMESTAMP/Source.

How to Format a Date in PostgreSQL

In PostgreSQL, the NOW() and CURRENT_DATE functions are used with the collaboration of the TO_CHAR() function to get the current date in a specific format.

PostgreSQL DATE Data Type With Examples

PostgreSQL supports the DATE data type that stores the date values in YYYY-MM-DD format. PostgreSQL utilizes 4 bytes to store a date value in the storage.