length

English [le?θ] US [le?θ]

n. ??, ??(??) ?? ??;

SQLite LENGTH ?? ???

??: SQLite LENGTH ??? ???? ??? ?????.

??: ??sqlite> SELECT ??, ??(?? ??? ?) FROM TABLENAME;

SQLite LENGTH ?? ?

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


實例：

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

結果：

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