-<!-- $PostgreSQL: pgsql/doc/src/sgml/information_schema.sgml,v 1.34 2008/09/08 00:47:40 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/information_schema.sgml,v 1.35 2008/11/25 20:47:42 tgl Exp $ -->
<chapter id="information-schema">
<title>The Information Schema</title>
<entry><type>sql_identifier</type></entry>
<entry>
Name of the database that contains the table that contains the
- column that is restricted by some constraint (always the
+ column that is restricted by this constraint (always the
current database)
</entry>
</row>
<entry><type>sql_identifier</type></entry>
<entry>
Name of the schema that contains the table that contains the
- column that is restricted by some constraint
+ column that is restricted by this constraint
</entry>
</row>
<entry><type>sql_identifier</type></entry>
<entry>
Name of the table that contains the column that is restricted
- by some constraint
+ by this constraint
</entry>
</row>
<entry><literal>column_name</literal></entry>
<entry><type>sql_identifier</type></entry>
<entry>
- Name of the column that is restricted by some constraint
+ Name of the column that is restricted by this constraint
</entry>
</row>
<entry><literal>position_in_unique_constraint</literal></entry>
<entry><type>cardinal_number</type></entry>
<entry>
- Not yet implemented
+ For a foreign-key constraint, ordinal position of the referenced
+ column within its unique constraint (count starts at 1);
+ otherwise null
</entry>
</row>
</tbody>