![]() ![]() Example 1: Convert a string to lowercase. If no uppercase characters exist, it returns the original string. This blog presented detailed knowledge on how to convert the case of a string in PostgreSQL. It converts all uppercase characters to lowercase. The INITCAP() transforms each word's first character/alphabet in a string to uppercase and the remaining letters/characters to lowercase. The UPPER() function converts all the string characters/letters to uppercase, while the LOWER() converts all characters in a string to lowercase. In PostgreSQL, the UPPER(), LOWER(), and INITCAP() functions are used for letter case conversion. The output certifies the working of the letter case functions. The lower method of strings returns a new string from the old one with all characters in lowercase. Let’s use the letter case functions in the article_title column: SELECT LOWER(article_title), UPPER(article_title), To convert a string to lowercase, you can use the lower method. We have already created a table named articles_info, whose data is shown in the following snippet: The output proves the working of the INITCAP() function.Įxample 4: How to Use Letter case Functions on Table’s Data Let’s learn how the INITCAP() function works in PostgreSQL SELECT INITCAP('Hello, welcome, how are you') In the following code, a string is passed to the UPPER() let's see how it works: SELECT LOWER('Hello, WELCOME, how are you') Īll letters have been converted to lowercase successfully.Įxample 3: Converting String letters to Title Case In the following code, a string is passed to the UPPER() let's see how it works: SELECT UPPER('Hello, welcome, how are you') Īll letters have been converted to UPPER CASE successfully.Įxample 2: Converting String letters to Lowercase In this article well show you how to convert text to lowercase using one of the Pythons built-in methods used to manipulate strings - str.lower (). INITCAP(): this function transforms each word's first character/alphabet in a string to uppercase and the rest of the characters to lowercase.: SELECT INITCAP(col_name) FROM table_name Įxample 1: Converting String letters to Uppercase LOWER(): It converts all characters/letters in a string to lowercase. It returns a new string with the lowercase characters. Note that the lower () method does not modify the original string. This method returns a new string with all the characters of the original string converted to lowercase. ![]() UPPER(): This function converts all string characters to uppercase. To lowercase a string in Python, you can use the lower () method. To convert the case of a string in Postgres, you must use one of the following functions: How Do I Convert the Case of a String in Postgres? This blog demonstrates how to convert the string’s letter case in Postgres via practical examples. The process of letter case functions is simple and straightforward. These built-in functions can easily transform the case of your strings according to your requirements. For this purpose, Postgres provides various built-in functions. In PostgreSQL, converting the case of a string is a useful technique that is used to format the strings into a specific case. ![]()
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