Important

The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.

In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10, while SingleStore 9.0 is recommended for production workloads.

LENGTH

Syntax

SQL

LENGTH (expr)

Arguments

expr: any string, array, or binary object

Return Type

Integer

Examples

Example 1

SQL

SELECT CHARACTER_LENGTH('olé'), LENGTH('olé');

+--------------------------+----------------+
| CHARACTER_LENGTH('olé')  | LENGTH('olé')  |
+--------------------------+----------------+
|                        3 |              4 |
+--------------------------+----------------+

The CHARACTER_LENGTH function returns the number of characters in the string, while the LENGTH() function returns the number of bytes in the string.

Example 2

SQL

DELIMITER //
CREATE OR REPLACE FUNCTION get_length() RETURNS INT AS
  DECLARE
    a ARRAY(VARCHAR(30));
  BEGIN
    a = ['SAM','JOE','TRUDY'];
    RETURN LENGTH(a);
  END //
DELIMITER ;

SELECT get_length() AS "LENGTH";

+--------+
| LENGTH |
+--------+
|      3 |
+--------+