SQLLEN Values

The value of SQLLEN depends on the data type of the columns. SQLLEN gives the length of data (in bytes), depending on data type.

Data Type	SQLLEN Value for DESCRIBE	SQLLEN Value for FETCH, OPEN and EXECUTE
date (See note 1.)	10 bytes	length attribute of the host variable
time (See note 1.)	8 bytes	length attribute of host variable
timestamp (See note 1.)	26 bytes	length attribute of the host variable
character strings - varying-length - fixed-length - long varying-length	length attribute of the column	length attribute of the host variable
graphic strings - varying-length - fixed length - long varying-length (See note 2.)	length attribute of the column	length attribute of the host variable
floating point	4 for single precision 8 for double precision	4 for single precision 8 for double precision
packed decimal	precision in byte 1 scale in byte 2	precision in byte 1 scale in byte 2
integer	4 bytes	4 bytes
small integer	2 bytes	2 bytes

Table Notes:

For host variable, a fixed-length character string representation of the date, time or timestamp is used.
For host variable, a long graphic string.