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 – TRIM Function

ByAdmin August 13, 2023August 13, 2023

The TRIM() function is used to remove specified characters or whitespace from the beginning and/or end of a string. It’s often used to clean up or manipulate strings by removing unwanted leading or trailing characters. The syntax of the TRIM() function is as follows: TRIM([ [ BOTH | LEADING | TRAILING ] trim_character FROM ]…

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 – LPAD Function

ByAdmin August 14, 2023September 23, 2023

The LPAD function is used to pad a string on the left side with a specified character or a repeated sequence of characters, until the resulting string reaches a specified length. This function is often used to align strings to a specific width. The syntax of the LPAD function is as follows: LPAD(string, length, fill_character)…

String Functions

PostgreSQL – REPLACE Function

ByAdmin August 14, 2023August 14, 2023

The REPLACE function is used to replace all occurrences of a specified substring within a given string with another substring. The syntax of the REPLACE function is as follows: REPLACE(string, old_substring, new_substring) where string is the input string in which you want to perform replacements, and old_substring is the substring you want to replace within…

String Functions

PostgreSQL – SPLIT_PART Function

ByAdmin August 14, 2023August 14, 2023

The SPLIT_PART function is used to extract a specific part of a string that is divided into segments by a delimiter. This function is particularly useful when you have a string that contains multiple segments separated by a delimiter, and you want to extract a specific segment based on its position. The syntax of the…

String Functions

PostgreSQL – MD5 Function

ByAdmin August 14, 2023August 14, 2023

The MD5 function is used to calculate the MD5 hash value of a given input string. MD5 (Message Digest Algorithm 5) is a widely used cryptographic hash function that produces a fixed-size 128-bit (16-byte) hash value, typically represented as a 32-character hexadecimal number. The syntax of the MD5 function is as follows: MD5(string) where string…

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