Returns a result set listing the unique row identifier columns for a table.
Parameters
connection
A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
qualifier
A qualifier for DB2 databases running on OS/390 or z/OS servers. For
other databases, pass NULL or an empty string.
schema
The schema which contains the tables.
table_name
The name of the table.
scope
Integer value representing the minimum duration for which the
unique row identifier is valid. This can be one of the following
values:
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.
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).
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