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
)
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.
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