odbc_foreignkeys

(PHP 4, PHP 5)

odbc_foreignkeys — Retrieves a list of foreign keys

Description

resource odbc_foreignkeys ( resource $connection_id , string $pk_qualifier , string $pk_owner , string $pk_table , string $fk_qualifier , string $fk_owner , string $fk_table )

Retrieves a list of foreign keys in the specified table or a list of foreign keys in other tables that refer to the primary key in the specified table

Parameters

connection_id

The ODBC connection identifier, see odbc_connect() for details.

pk_qualifier

The primary key qualifier.

pk_owner

The primary key owner.

pk_table

The primary key table.

fk_qualifier

The foreign key qualifier.

fk_owner

The foreign key owner.

fk_table

The foreign key table.

Return Values

Returns an ODBC result identifier or FALSE on failure.

The result set has the following columns:

• PKTABLE_QUALIFIER
• PKTABLE_OWNER
• PKTABLE_NAME
• PKCOLUMN_NAME
• FKTABLE_QUALIFIER
• FKTABLE_OWNER
• FKTABLE_NAME
• FKCOLUMN_NAME
• KEY_SEQ
• UPDATE_RULE
• DELETE_RULE
• FK_NAME
• PK_NAME

If pk_table contains a table name, odbc_foreignkeys() returns a result set containing the primary key of the specified table and all of the foreign keys that refer to it.

If fk_table contains a table name, odbc_foreignkeys() returns a result set containing all of the foreign keys in the specified table and the primary keys (in other tables) to which they refer.

If both pk_table and fk_table contain table names, odbc_foreignkeys() returns the foreign keys in the table specified in fk_table that refer to the primary key of the table specified in pk_table. This should be one key at most.