db2_special_columns

Return Values

Returns a statement resource with a result set containing rows with unique row identifier information for a table. The rows are composed of the following columns:

Column name	Description
SCOPE	Integer value SQL constant Description 0 SQL_SCOPE_CURROW Row identifier is valid only while the cursor is positioned on the row. 1 SQL_SCOPE_TRANSACTION Row identifier is valid for the duration of the transaction. 2 SQL_SCOPE_SESSION Row identifier is valid for the duration of the connection.
COLUMN_NAME	Name of the unique column.
DATA_TYPE	SQL data type for the column.
TYPE_NAME	Character string representation of the SQL data type for the column.
COLUMN_SIZE	An integer value representing the size of the column.
BUFFER_LENGTH	Maximum number of bytes necessary to store data from this column.
DECIMAL_DIGITS	The scale of the column, or NULL where scale is not applicable.
NUM_PREC_RADIX	An integer value of either 10 (representing an exact numeric data type), 2 (representing an approximate numeric data type), or NULL (representing a data type for which radix is not applicable).
PSEUDO_COLUMN	Always returns 1.