length

英[leŋθ] 美[leŋθ]

n.Length, long; the length of time; (language) sound length; a paragraph, a section

SQLite LENGTH function syntax

Function: SQLite LENGTH function returns the length of the string.

Syntax: sqlite> SELECT name, length(a certain column of data) FROM TABLENAME;

SQLite LENGTH function example

COMPANY 表

ID          NAME        AGE         ADDRESS     SALARY
----------  ----------  ----------  ----------  ----------
1           Paul        32          California  20000.0
2           Allen       25          Texas       15000.0
3           Teddy       23          Norway      20000.0
4           Mark        25          Rich-Mond   65000.0
5           David       27          Texas       85000.0
6           Kim         22          South-Hall  45000.0
7           James       24          Houston     10000.0


实例：

sqlite> SELECT name, length(name) FROM COMPANY;

结果：

NAME        length(name)
----------  ------------
Paul        4
Allen       5
Teddy       5
Mark        4
David       5
Kim         3
James       5