Usage of rpad in sql

The RPAD function in SQL is used to extend a string to a specified length and pad the specified characters at the end. Its usage includes aligning data, expanding strings, creating padded strings, etc.

RPAD function in SQL

The RPAD function is used to extend a string to a specified length, and Pad the specified characters at the end. The syntax is as follows:

<code>RPAD(string, length, pad_string)</code>

Where:

• string: The input string to be expanded.
• length: The target length to be extended.
• pad_string: String used for padding. If omitted, spaces are used.

Usage

The RPAD function is useful in the following scenarios:

• Align data for better readability .
• Expand a string to a fixed length to meet specific requirements.
• Create a string with leading or trailing padding.

Example

The following example extends the string "Hello" to 10 characters and pads the tail with "!".:

SELECT RPAD('Hello', 10, '!') AS padded_string;

Output:

<code>padded_string
Hello!!!!!</code>

The following example extends the string "World" to 7 characters and pads the header with "ABC":

SELECT RPAD('World', 7, 'ABC') AS padded_string;

Output:

<code>padded_string
ABCWorld</code>

Notes

• If length is less than the current length of the string, RPAD will truncate the string.
• If pad_string is an empty string, RPAD will not pad any characters.

The above is the detailed content of Usage of rpad in sql. For more information, please follow other related articles on the PHP Chinese website!