(no version information, might be only in CVS)
db2_special_columns -- Returns a result set listing the unique row identifier columns for a table警告 |
この関数は、 実験的なステータスにあります。これは、この関数の 動作、関数名、ここで書かれていること全てがPHPの将来のバージョンで予告 なく変更される可能性があることを意味します。注意を喚起するとともに自分 のリスクでこの関数を使用してください。 |
Returns a result set listing the unique row identifier columns for a table.
A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
A qualifier for DB2 databases running on OS/390 or z/OS servers. For other databases, pass NULL or an empty string.
The schema which contains the tables.
The name of the table.
Integer value representing the minimum duration for which the unique row identifier is valid. This can be one of the following 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 |
|
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. |