DB2_PRIMARY_KEYS(3)							 1						       DB2_PRIMARY_KEYS(3)

db2_primary_keys - Returns a result set listing primary keys for a table

SYNOPSIS

       resource db2_primary_keys (resource  $connection, string  $qualifier, string  $schema, string  $table-name)

DESCRIPTION

	Returns a result set listing the primary keys for a table.

PARAMETERS

	      o $connection
		- A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.

	      o $qualifier
		- A qualifier for DB2 databases running on OS/390 or z/OS servers. For other databases, pass NULL or an empty string.

	      o $schema
		- The schema which contains the tables. If $schema is NULL, db2_primary_keys(3) matches the schema for the current connection.

	      o $table-name
		- The name of the table.

RETURN VALUES

	Returns a statement resource with a result set containing rows describing the primary keys for the specified table. The result set is com-
       posed of the following columns:

       +------------+---------------------------------------------------+
       |Column name |							|
       |	    |							|
       |	    |			 Description			|
       |	    |							|
       +------------+---------------------------------------------------+
       | TABLE_CAT  |							|
       |	    |							|
       |	    |  Name of the catalog for the table containing the |
       |	    | primary key. The value is NULL if this table does |
       |	    | not have catalogs.				|
       |	    |							|
       |TABLE_SCHEM |							|
       |	    |							|
       |	    |  Name of the schema for the table containing  the |
       |	    | primary key.					|
       |	    |							|
       |TABLE_NAME  |							|
       |	    |							|
       |	    |	Name of the table containing the primary key.	|
       |	    |							|
       |COLUMN_NAME |							|
       |	    |							|
       |	    |  Name of the column containing the primary key.	|
       |	    |							|
       |  KEY_SEQ   |							|
       |	    |							|
       |	    |	1-indexed position of the column in the key.	|
       |	    |							|
       |  PK_NAME   |							|
       |	    |							|
       |	    |		The name of the primary key.		|
       |	    |							|
       +------------+---------------------------------------------------+
SEE ALSO

       db2_column_privileges(3),   db2_columns(3),   db2_foreign_keys(3),   db2_procedure_columns(3),  db2_procedures(3),  db2_special_columns(3),
       db2_statistics(3), db2_table_privileges(3), db2_tables(3).

PHP Documentation Group 												       DB2_PRIMARY_KEYS(3)