PostgreSQL – LENGTH Function

ByAdmin August 13, 2023August 13, 2023

The LENGTH() function is used to retrieve the length (number of characters) of a string. It takes a string as an argument and returns an integer representing the length of the string.

The syntax of the LENGTH() function is as follows:

LENGTH(string)

where string is the input string for which you want to determine the length.

Here’s a simple example of how to use the LENGTH() function in PostgreSQL:

SELECT LENGTH('Hello, World!') AS string_length;

In this example, the LENGTH() function calculates the length of the string “Hello, World!” and returns the result, which would be 13.

String Functions

PostgreSQL – REGEXP_MATCHES Function

ByAdmin August 14, 2023August 14, 2023

The REGEXP_MATCHES function is used to perform regular expression pattern matching on a given string. It returns all substrings in the input string that match a specified regular expression pattern. This function is useful when you need to extract specific pieces of information from a text based on a pattern. The syntax of the REGEXP_MATCHES…

String Functions

PostgreSQL – CHR Function

ByAdmin August 14, 2023August 20, 2023

The CHR function is used to return the character corresponding to a specified ASCII code or Unicode code point. It’s a convenient way to generate characters based on their numeric representations. The syntax of the CHR function is as follows: CHR(code) where code is the numeric code that represents the character you want to retrieve….

String Functions

PostgreSQL – LOWER Function

ByAdmin September 21, 2023September 21, 2023

The LOWER function is used to convert all characters in a given string to lowercase. It takes a string as an argument and returns a new string where all alphabetic characters have been converted to their lowercase equivalents. Here’s the basic syntax of the LOWER function: LOWER(string) Here’s an example of using the LOWER function:…

String Functions

PostgreSQL – RPAD Function

ByAdmin September 22, 2023September 22, 2023

The rpad function in PostgreSQL database is used to right-pad a string with a specified character or a set of characters until the resulting string reaches a specified length. This function is often used to format strings to a fixed width. Here’s the syntax for the rpad function: rpad(input_string, length, pad_string) The rpad function takes…

String Functions

PostgreSQL – TRANSLATE Function

ByAdmin August 14, 2023August 14, 2023

The TRANSLATE function is used to replace all occurrences of a set of characters in a given string with corresponding characters from another set. This function is particularly useful for performing character-level substitutions or transformations. The syntax of the TRANSLATE function is as follows: TRANSLATE(string, from_set, to_set) where string is the input string in which…

String Functions

PostgreSQL – RIGHT Function

ByAdmin August 14, 2023September 23, 2023

The RIGHT function in postgreSQL is used to extract a specified number of characters from the end (right side) of a string. The syntax of the RIGHT function is as shown below: RIGHT(string, length) where string is the input string from which you want to extract characters, and length is the number of characters you…

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