SQL Server/T-SQL Tutorial/System Functions/COL LENGTH

COL_LENGTH takes two arguments, the table name and the column name.

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What it returns is the defined length of the particular column. 5> 6> CREATE TABLE publishers( 7> pub_id char(4) NOT NULL, 8> pub_name varchar(40) NULL, 9> city varchar(20) NULL, 10> state char(2) NULL, 11> country varchar(30) NULL DEFAULT("USA") 12> ) 13> GO 1> 2> 3> insert publishers values("1", "Publisher A", "Vancouver", "MA", "USA") 4> insert publishers values("2", "Publisher B", "Washington", "DC", "USA") 5> insert publishers values("3", "Publisher C", "Berkeley", "CA", "USA") 6> insert publishers values("4", "Publisher D", "New York", "NY", "USA") 7> insert publishers values("5", "Publisher E", "Chicago", "IL", "USA") 8> insert publishers values("6", "Publisher F", "Dallas", "TX", "USA") 9> insert publishers values("7", "Publisher G", "Vancouver", "BC", "Canada") 10> insert publishers values("8", "Publisher H", "Paris", NULL, "France") 11> GO (1 rows affected) (1 rows affected) (1 rows affected) (1 rows affected) (1 rows affected) (1 rows affected) (1 rows affected) (1 rows affected) 1> SELECT COL_LENGTH("publishers", "pub_id") 2> GO

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(1 rows affected) 1> 2> drop table publishers; 3> GO 1></source>