$COLUMN_LENGTH | $COL_LEN
The $COL_LEN and $COLUMN_LENGTH functions return the defined length of
a column. The return data type is a 4-byte INTEGER. Both functions are
identical.
These functions differ from the CHAR_LENGTH and CHARACTER_LENGTH functions:
$COL_LEN and $COLUMN_LENGTH return the length defined for the column
in the Omnidex Environment Catalog.
CHAR_LENGTH and CHARACTER_LENGTH return the actual length of the data
contained in the column for that record.
The return data type is a 4 byte integer.
Syntax
$COL_LEN(column) | $COLUMN_LENGTH(column)
(column)
Required. An unambiguous column name. Resolve ambiguities by qualifying
the column name with the table name and database name if necessary.
$COL_LEN(tablename.columnname)
$COLUMN_LENGTH(databasename.tablename.columnname)
- If this function is used in a SQL SELECT, INSERT, or UPDATE statement,
then the column parameter must be from one of the tables referenced
in the statement.
- If this function is used in a COLUMN statement within an environment
file, then column must be the column being declared.
Example
select company,
$col_len(company),
char_length(company)
from customers
where company='national computer'
Company: National Computer Systems
$COLUMN_LENGTH: 40
CHARACTER_LENGTH: 25
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