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How to Use EXTRACT() Function in PostgreSQL

The EXTRACT() function in PostgreSQL extracts a specific field, like a day, month, minutes, hours, etc., from an INTERVAL or TIMESTAMP.

How to Split a String Using SPLIT_PART() Function in PostgreSQL

PostgreSQL offers a built-in function named SPLIT_PART() that splits the given string based on the specified delimiter. It returns the ‘n’ number of substrings.

How to Use CONCAT Function in PostgreSQL

In PostgreSQL, the CONCAT() function accepts multiple strings as arguments and concatenates them to a single string. Strings can be char, text, or varchar.

How to Use the UNION Clause/Operator in PostgreSQL

In PostgreSQL, the UNION clause/operator combines the result sets of two or more queries. It doesn’t return the duplicated rows in the combined set.

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.